./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-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa --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 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:12:15,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:12:15,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:12:15,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:12:15,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:12:15,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:12:15,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:12:15,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:12:15,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:12:15,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:12:15,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:12:15,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:12:15,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:12:15,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:12:15,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:12:15,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:12:15,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:12:15,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:12:15,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:12:15,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:12:15,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:12:15,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:12:15,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:12:15,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:12:15,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:12:15,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:12:15,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:12:15,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:12:15,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:12:15,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:12:15,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:12:15,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:12:15,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:12:15,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:12:15,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:12:15,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:12:15,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:12:15,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:12:15,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:12:15,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:12:15,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:12:15,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 20:12:15,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:12:15,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:12:15,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:12:15,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:12:15,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:12:15,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:12:15,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:12:15,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:12:15,228 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:12:15,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:12:15,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:12:15,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:12:15,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:12:15,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:12:15,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:12:15,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:12:15,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:12:15,231 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:12:15,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:12:15,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:12:15,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:12:15,231 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_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 [2021-12-06 20:12:15,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:12:15,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:12:15,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:12:15,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:12:15,424 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:12:15,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-06 20:12:15,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/data/6c0bdbc32/306527ab2f3e416da0e394c25b20e299/FLAG938938ef8 [2021-12-06 20:12:16,114 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:12:16,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-06 20:12:16,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/data/6c0bdbc32/306527ab2f3e416da0e394c25b20e299/FLAG938938ef8 [2021-12-06 20:12:16,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/data/6c0bdbc32/306527ab2f3e416da0e394c25b20e299 [2021-12-06 20:12:16,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:12:16,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:12:16,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:12:16,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:12:16,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:12:16,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:12:16" (1/1) ... [2021-12-06 20:12:16,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e9275c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:16, skipping insertion in model container [2021-12-06 20:12:16,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:12:16" (1/1) ... [2021-12-06 20:12:16,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:12:16,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:12:19,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2021-12-06 20:12:19,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2021-12-06 20:12:19,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2021-12-06 20:12:19,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2021-12-06 20:12:19,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:12:19,132 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:12:19,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2021-12-06 20:12:19,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2021-12-06 20:12:19,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2021-12-06 20:12:19,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2021-12-06 20:12:19,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:12:19,616 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:12:19,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19 WrapperNode [2021-12-06 20:12:19,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:12:19,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:12:19,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:12:19,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:12:19,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,833 INFO L137 Inliner]: procedures = 469, calls = 2629, calls flagged for inlining = 277, calls inlined = 249, statements flattened = 5809 [2021-12-06 20:12:19,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:12:19,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:12:19,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:12:19,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:12:19,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:19,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:20,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:20,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:12:20,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:12:20,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:12:20,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:12:20,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (1/1) ... [2021-12-06 20:12:20,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:12:20,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:20,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:12:20,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c60d37e-07d3-444c-8bc4-bed971730904/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:12:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 20:12:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 20:12:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 20:12:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 20:12:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-06 20:12:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-06 20:12:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-06 20:12:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-06 20:12:20,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 20:12:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-06 20:12:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2021-12-06 20:12:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-06 20:12:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 20:12:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-12-06 20:12:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-12-06 20:12:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 20:12:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-06 20:12:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2021-12-06 20:12:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-06 20:12:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-06 20:12:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2021-12-06 20:12:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-06 20:12:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 20:12:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 20:12:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 20:12:20,113 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 20:12:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:12:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-06 20:12:20,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-06 20:12:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2021-12-06 20:12:20,113 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2021-12-06 20:12:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-06 20:12:20,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-06 20:12:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 20:12:20,114 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 20:12:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-06 20:12:20,114 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-06 20:12:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2021-12-06 20:12:20,114 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2021-12-06 20:12:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 20:12:20,114 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-06 20:12:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2021-12-06 20:12:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 20:12:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-06 20:12:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-06 20:12:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-06 20:12:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2021-12-06 20:12:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-06 20:12:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 20:12:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 20:12:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2021-12-06 20:12:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2021-12-06 20:12:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2021-12-06 20:12:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2021-12-06 20:12:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:12:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-06 20:12:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-06 20:12:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-06 20:12:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-06 20:12:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-12-06 20:12:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-06 20:12:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-12-06 20:12:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 20:12:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 20:12:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 20:12:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-06 20:12:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-06 20:12:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 20:12:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 20:12:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-06 20:12:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-06 20:12:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2021-12-06 20:12:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2021-12-06 20:12:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 20:12:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 20:12:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2021-12-06 20:12:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2021-12-06 20:12:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-06 20:12:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-06 20:12:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-06 20:12:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-06 20:12:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-12-06 20:12:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-12-06 20:12:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 20:12:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 20:12:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-06 20:12:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-06 20:12:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-12-06 20:12:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-12-06 20:12:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 20:12:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 20:12:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2021-12-06 20:12:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2021-12-06 20:12:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-06 20:12:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2021-12-06 20:12:20,122 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2021-12-06 20:12:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-06 20:12:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2021-12-06 20:12:20,124 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2021-12-06 20:12:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2021-12-06 20:12:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2021-12-06 20:12:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2021-12-06 20:12:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2021-12-06 20:12:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-12-06 20:12:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-12-06 20:12:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 20:12:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 20:12:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-06 20:12:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-06 20:12:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-06 20:12:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-06 20:12:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2021-12-06 20:12:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 20:12:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2021-12-06 20:12:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2021-12-06 20:12:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-06 20:12:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2021-12-06 20:12:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2021-12-06 20:12:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 20:12:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-06 20:12:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2021-12-06 20:12:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2021-12-06 20:12:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2021-12-06 20:12:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2021-12-06 20:12:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-06 20:12:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-06 20:12:20,658 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:12:20,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:12:20,822 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 20:20:47,303 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-06 20:20:47,356 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:20:47,376 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:20:47,376 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-06 20:20:47,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:20:47 BoogieIcfgContainer [2021-12-06 20:20:47,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:20:47,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:20:47,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:20:47,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:20:47,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:12:16" (1/3) ... [2021-12-06 20:20:47,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81a577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:20:47, skipping insertion in model container [2021-12-06 20:20:47,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:19" (2/3) ... [2021-12-06 20:20:47,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81a577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:20:47, skipping insertion in model container [2021-12-06 20:20:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:20:47" (3/3) ... [2021-12-06 20:20:47,386 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2021-12-06 20:20:47,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:20:47,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 20:20:47,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:20:47,438 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 [2021-12-06 20:20:47,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 20:20:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 2201 states, 1501 states have (on average 1.2771485676215857) internal successors, (1917), 1549 states have internal predecessors, (1917), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) [2021-12-06 20:20:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:20:47,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:47,510 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:47,510 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] === [2021-12-06 20:20:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 287325089, now seen corresponding path program 1 times [2021-12-06 20:20:47,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:47,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813467730] [2021-12-06 20:20:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:47,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:20:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:20:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:20:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:20:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:20:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:20:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:20:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:20:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:20:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:20:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:20:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:20:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:20:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:20:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:20:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 20:20:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-06 20:20:49,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:49,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813467730] [2021-12-06 20:20:49,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813467730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:49,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:49,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:20:49,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329983564] [2021-12-06 20:20:49,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:49,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:20:49,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:20:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:20:49,107 INFO L87 Difference]: Start difference. First operand has 2201 states, 1501 states have (on average 1.2771485676215857) internal successors, (1917), 1549 states have internal predecessors, (1917), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 20:20:51,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:53,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:02,538 INFO L93 Difference]: Finished difference Result 6481 states and 9235 transitions. [2021-12-06 20:21:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:21:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 183 [2021-12-06 20:21:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:02,591 INFO L225 Difference]: With dead ends: 6481 [2021-12-06 20:21:02,591 INFO L226 Difference]: Without dead ends: 4299 [2021-12-06 20:21:02,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:21:02,610 INFO L933 BasicCegarLoop]: 3163 mSDtfsCounter, 3703 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 1733 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 6503 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1733 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:02,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 6503 Invalid, 3704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1733 Valid, 1969 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2021-12-06 20:21:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-12-06 20:21:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4201. [2021-12-06 20:21:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 2860 states have (on average 1.2615384615384615) internal successors, (3608), 2953 states have internal predecessors, (3608), 1100 states have call successors, (1100), 240 states have call predecessors, (1100), 239 states have return successors, (1097), 1071 states have call predecessors, (1097), 1097 states have call successors, (1097) [2021-12-06 20:21:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 5805 transitions. [2021-12-06 20:21:02,925 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 5805 transitions. Word has length 183 [2021-12-06 20:21:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:02,927 INFO L470 AbstractCegarLoop]: Abstraction has 4201 states and 5805 transitions. [2021-12-06 20:21:02,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 20:21:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 5805 transitions. [2021-12-06 20:21:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 20:21:02,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:02,939 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:02,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:21:02,940 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] === [2021-12-06 20:21:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1496669546, now seen corresponding path program 1 times [2021-12-06 20:21:02,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:02,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573959724] [2021-12-06 20:21:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:21:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:21:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:21:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:21:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:21:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:21:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:21:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:21:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:21:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:21:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:21:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:21:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 20:21:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 20:21:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-12-06 20:21:04,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:04,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573959724] [2021-12-06 20:21:04,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573959724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:04,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:04,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:21:04,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968193431] [2021-12-06 20:21:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:04,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:21:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:21:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:21:04,061 INFO L87 Difference]: Start difference. First operand 4201 states and 5805 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 20:21:06,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:08,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:17,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:17,663 INFO L93 Difference]: Finished difference Result 10047 states and 13945 transitions. [2021-12-06 20:21:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:21:17,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 204 [2021-12-06 20:21:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:17,705 INFO L225 Difference]: With dead ends: 10047 [2021-12-06 20:21:17,705 INFO L226 Difference]: Without dead ends: 5879 [2021-12-06 20:21:17,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:21:17,722 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 3311 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 1655 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 6398 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:17,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3741 Valid, 6398 Invalid, 3596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1655 Valid, 1939 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-12-06 20:21:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2021-12-06 20:21:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5726. [2021-12-06 20:21:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 3899 states have (on average 1.254167735316748) internal successors, (4890), 4025 states have internal predecessors, (4890), 1480 states have call successors, (1480), 347 states have call predecessors, (1480), 345 states have return successors, (1477), 1435 states have call predecessors, (1477), 1477 states have call successors, (1477) [2021-12-06 20:21:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 7847 transitions. [2021-12-06 20:21:17,941 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 7847 transitions. Word has length 204 [2021-12-06 20:21:17,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 7847 transitions. [2021-12-06 20:21:17,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 20:21:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 7847 transitions. [2021-12-06 20:21:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-06 20:21:17,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:17,949 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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] [2021-12-06 20:21:17,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:21:17,949 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] === [2021-12-06 20:21:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1608232496, now seen corresponding path program 1 times [2021-12-06 20:21:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086969192] [2021-12-06 20:21:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:17,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:21:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:21:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:21:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:21:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:21:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:21:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:21:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:21:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:21:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:21:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:21:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:21:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 20:21:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:21:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 20:21:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-12-06 20:21:18,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:18,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086969192] [2021-12-06 20:21:18,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086969192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:18,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:18,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:21:18,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680365353] [2021-12-06 20:21:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:18,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:21:18,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:21:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:21:18,996 INFO L87 Difference]: Start difference. First operand 5726 states and 7847 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-12-06 20:21:21,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:23,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:33,380 INFO L93 Difference]: Finished difference Result 15367 states and 21224 transitions. [2021-12-06 20:21:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:21:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 215 [2021-12-06 20:21:33,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:33,438 INFO L225 Difference]: With dead ends: 15367 [2021-12-06 20:21:33,438 INFO L226 Difference]: Without dead ends: 9674 [2021-12-06 20:21:33,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:21:33,459 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 3633 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1720 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:33,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4116 Valid, 6477 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1720 Valid, 1975 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-12-06 20:21:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2021-12-06 20:21:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 9421. [2021-12-06 20:21:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9421 states, 6420 states have (on average 1.2523364485981308) internal successors, (8040), 6639 states have internal predecessors, (8040), 2429 states have call successors, (2429), 573 states have call predecessors, (2429), 570 states have return successors, (2426), 2347 states have call predecessors, (2426), 2426 states have call successors, (2426) [2021-12-06 20:21:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9421 states to 9421 states and 12895 transitions. [2021-12-06 20:21:33,829 INFO L78 Accepts]: Start accepts. Automaton has 9421 states and 12895 transitions. Word has length 215 [2021-12-06 20:21:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 9421 states and 12895 transitions. [2021-12-06 20:21:33,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-12-06 20:21:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9421 states and 12895 transitions. [2021-12-06 20:21:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-06 20:21:33,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:33,838 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-12-06 20:21:33,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:21:33,839 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] === [2021-12-06 20:21:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1632121381, now seen corresponding path program 1 times [2021-12-06 20:21:33,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:33,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636801521] [2021-12-06 20:21:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:33,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:21:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:21:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:21:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:21:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:21:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:21:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:21:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:21:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:21:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:21:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:21:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:21:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:21:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:21:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:21:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:21:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:21:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:21:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-06 20:21:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2021-12-06 20:21:34,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:34,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636801521] [2021-12-06 20:21:34,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636801521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:34,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:34,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:21:34,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161904577] [2021-12-06 20:21:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:34,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:21:34,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:21:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:21:34,803 INFO L87 Difference]: Start difference. First operand 9421 states and 12895 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:21:36,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:39,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:48,955 INFO L93 Difference]: Finished difference Result 25030 states and 34581 transitions. [2021-12-06 20:21:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:21:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 244 [2021-12-06 20:21:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:49,043 INFO L225 Difference]: With dead ends: 25030 [2021-12-06 20:21:49,043 INFO L226 Difference]: Without dead ends: 17299 [2021-12-06 20:21:49,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:21:49,071 INFO L933 BasicCegarLoop]: 5224 mSDtfsCounter, 2985 mSDsluCounter, 4312 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 1221 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 9536 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1221 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:49,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3468 Valid, 9536 Invalid, 3209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1221 Valid, 1986 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2021-12-06 20:21:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17299 states. [2021-12-06 20:21:49,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17299 to 16865. [2021-12-06 20:21:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16865 states, 11500 states have (on average 1.2528695652173913) internal successors, (14408), 11883 states have internal predecessors, (14408), 4340 states have call successors, (4340), 1026 states have call predecessors, (4340), 1023 states have return successors, (4337), 4208 states have call predecessors, (4337), 4337 states have call successors, (4337) [2021-12-06 20:21:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 23085 transitions. [2021-12-06 20:21:49,582 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 23085 transitions. Word has length 244 [2021-12-06 20:21:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:49,583 INFO L470 AbstractCegarLoop]: Abstraction has 16865 states and 23085 transitions. [2021-12-06 20:21:49,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:21:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 23085 transitions. [2021-12-06 20:21:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-06 20:21:49,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:49,593 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-12-06 20:21:49,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:21:49,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:49,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1694160995, now seen corresponding path program 1 times [2021-12-06 20:21:49,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:49,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972060801] [2021-12-06 20:21:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:49,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:21:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:21:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:21:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:21:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:21:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:21:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:21:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:21:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:21:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:21:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:21:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:21:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:21:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:21:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:21:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:21:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:21:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:21:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-06 20:21:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2021-12-06 20:21:50,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972060801] [2021-12-06 20:21:50,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972060801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:50,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:50,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:21:50,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895547894] [2021-12-06 20:21:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:50,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:21:50,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:21:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:21:50,768 INFO L87 Difference]: Start difference. First operand 16865 states and 23085 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:21:52,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:00,233 INFO L93 Difference]: Finished difference Result 17297 states and 23955 transitions. [2021-12-06 20:22:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:22:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 244 [2021-12-06 20:22:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:00,301 INFO L225 Difference]: With dead ends: 17297 [2021-12-06 20:22:00,301 INFO L226 Difference]: Without dead ends: 17242 [2021-12-06 20:22:00,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:22:00,315 INFO L933 BasicCegarLoop]: 2770 mSDtfsCounter, 3011 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 1161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:00,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 6115 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 1413 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-12-06 20:22:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2021-12-06 20:22:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 16810. [2021-12-06 20:22:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16810 states, 11475 states have (on average 1.2523747276688453) internal successors, (14371), 11846 states have internal predecessors, (14371), 4313 states have call successors, (4313), 1021 states have call predecessors, (4313), 1021 states have return successors, (4313), 4195 states have call predecessors, (4313), 4313 states have call successors, (4313) [2021-12-06 20:22:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16810 states to 16810 states and 22997 transitions. [2021-12-06 20:22:00,872 INFO L78 Accepts]: Start accepts. Automaton has 16810 states and 22997 transitions. Word has length 244 [2021-12-06 20:22:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:00,872 INFO L470 AbstractCegarLoop]: Abstraction has 16810 states and 22997 transitions. [2021-12-06 20:22:00,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:22:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 16810 states and 22997 transitions. [2021-12-06 20:22:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-12-06 20:22:00,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:00,900 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 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] [2021-12-06 20:22:00,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:22:00,900 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] === [2021-12-06 20:22:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1013221062, now seen corresponding path program 1 times [2021-12-06 20:22:00,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083158616] [2021-12-06 20:22:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:00,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:22:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:22:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:22:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:22:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:22:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:22:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:22:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:22:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:22:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:22:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:22:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:22:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:22:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:22:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:22:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:22:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:22:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 20:22:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:22:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:22:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-06 20:22:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-12-06 20:22:01,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:01,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083158616] [2021-12-06 20:22:01,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083158616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:01,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:01,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:22:01,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197652706] [2021-12-06 20:22:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:01,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:22:01,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:22:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:22:01,832 INFO L87 Difference]: Start difference. First operand 16810 states and 22997 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:22:03,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:06,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:16,430 INFO L93 Difference]: Finished difference Result 39508 states and 54449 transitions. [2021-12-06 20:22:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:22:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 273 [2021-12-06 20:22:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:16,527 INFO L225 Difference]: With dead ends: 39508 [2021-12-06 20:22:16,527 INFO L226 Difference]: Without dead ends: 24388 [2021-12-06 20:22:16,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:22:16,581 INFO L933 BasicCegarLoop]: 4872 mSDtfsCounter, 2622 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 1194 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 8925 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:16,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3047 Valid, 8925 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 1949 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2021-12-06 20:22:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24388 states. [2021-12-06 20:22:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24388 to 23760. [2021-12-06 20:22:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23760 states, 16217 states have (on average 1.250724548313498) internal successors, (20283), 16740 states have internal predecessors, (20283), 6081 states have call successors, (6081), 1461 states have call predecessors, (6081), 1461 states have return successors, (6081), 5911 states have call predecessors, (6081), 6081 states have call successors, (6081) [2021-12-06 20:22:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23760 states to 23760 states and 32445 transitions. [2021-12-06 20:22:17,329 INFO L78 Accepts]: Start accepts. Automaton has 23760 states and 32445 transitions. Word has length 273 [2021-12-06 20:22:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:17,330 INFO L470 AbstractCegarLoop]: Abstraction has 23760 states and 32445 transitions. [2021-12-06 20:22:17,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:22:17,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23760 states and 32445 transitions. [2021-12-06 20:22:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-06 20:22:17,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:17,363 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 6, 6, 6, 3, 3, 3, 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] [2021-12-06 20:22:17,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:22:17,363 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] === [2021-12-06 20:22:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2016058546, now seen corresponding path program 1 times [2021-12-06 20:22:17,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:17,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103631275] [2021-12-06 20:22:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:17,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:22:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:22:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:22:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:22:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:22:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:22:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:22:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:22:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:22:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:22:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:22:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:22:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:22:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:22:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:22:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:22:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:22:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-06 20:22:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-06 20:22:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-06 20:22:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:22:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:22:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2021-12-06 20:22:18,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:18,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103631275] [2021-12-06 20:22:18,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103631275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:18,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:18,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:22:18,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61020420] [2021-12-06 20:22:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:18,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:22:18,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:22:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:22:18,293 INFO L87 Difference]: Start difference. First operand 23760 states and 32445 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-06 20:22:20,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:22,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:34,019 INFO L93 Difference]: Finished difference Result 57613 states and 79275 transitions. [2021-12-06 20:22:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:22:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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 298 [2021-12-06 20:22:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:34,138 INFO L225 Difference]: With dead ends: 57613 [2021-12-06 20:22:34,139 INFO L226 Difference]: Without dead ends: 33782 [2021-12-06 20:22:34,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:22:34,193 INFO L933 BasicCegarLoop]: 5226 mSDtfsCounter, 2935 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 1203 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 9510 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:34,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3417 Valid, 9510 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1203 Valid, 1973 Invalid, 2 Unknown, 0 Unchecked, 14.6s Time] [2021-12-06 20:22:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33782 states. [2021-12-06 20:22:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33782 to 32916. [2021-12-06 20:22:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32916 states, 22450 states have (on average 1.251314031180401) internal successors, (28092), 23174 states have internal predecessors, (28092), 8439 states have call successors, (8439), 2026 states have call predecessors, (8439), 2026 states have return successors, (8439), 8207 states have call predecessors, (8439), 8439 states have call successors, (8439) [2021-12-06 20:22:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32916 states to 32916 states and 44970 transitions. [2021-12-06 20:22:35,196 INFO L78 Accepts]: Start accepts. Automaton has 32916 states and 44970 transitions. Word has length 298 [2021-12-06 20:22:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:35,197 INFO L470 AbstractCegarLoop]: Abstraction has 32916 states and 44970 transitions. [2021-12-06 20:22:35,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-06 20:22:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 32916 states and 44970 transitions. [2021-12-06 20:22:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-06 20:22:35,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:35,237 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 7, 7, 7, 4, 4, 4, 3, 3, 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] [2021-12-06 20:22:35,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:22:35,238 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] === [2021-12-06 20:22:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -551890333, now seen corresponding path program 1 times [2021-12-06 20:22:35,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:35,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897371306] [2021-12-06 20:22:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:35,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:22:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:22:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:22:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:22:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:22:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:22:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:22:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:22:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:22:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:22:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:22:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:22:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:22:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:22:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:22:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:22:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:22:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 20:22:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 20:22:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:22:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:22:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:22:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-06 20:22:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:22:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:22:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-12-06 20:22:36,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:36,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897371306] [2021-12-06 20:22:36,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897371306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:36,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:36,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:22:36,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099367788] [2021-12-06 20:22:36,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:36,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:22:36,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:22:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:22:36,230 INFO L87 Difference]: Start difference. First operand 32916 states and 44970 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 20:22:38,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:40,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:51,384 INFO L93 Difference]: Finished difference Result 76129 states and 104735 transitions. [2021-12-06 20:22:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:22:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 324 [2021-12-06 20:22:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:51,531 INFO L225 Difference]: With dead ends: 76129 [2021-12-06 20:22:51,531 INFO L226 Difference]: Without dead ends: 43178 [2021-12-06 20:22:51,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:22:51,604 INFO L933 BasicCegarLoop]: 5381 mSDtfsCounter, 2925 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 1156 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3406 SdHoareTripleChecker+Valid, 9769 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:51,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3406 Valid, 9769 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 1964 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2021-12-06 20:22:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43178 states. [2021-12-06 20:22:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43178 to 32916. [2021-12-06 20:22:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32916 states, 22450 states have (on average 1.2512694877505568) internal successors, (28091), 23174 states have internal predecessors, (28091), 8439 states have call successors, (8439), 2026 states have call predecessors, (8439), 2026 states have return successors, (8439), 8207 states have call predecessors, (8439), 8439 states have call successors, (8439) [2021-12-06 20:22:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32916 states to 32916 states and 44969 transitions. [2021-12-06 20:22:52,805 INFO L78 Accepts]: Start accepts. Automaton has 32916 states and 44969 transitions. Word has length 324 [2021-12-06 20:22:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:52,805 INFO L470 AbstractCegarLoop]: Abstraction has 32916 states and 44969 transitions. [2021-12-06 20:22:52,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 20:22:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 32916 states and 44969 transitions. [2021-12-06 20:22:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-06 20:22:52,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:52,835 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 7, 7, 7, 4, 4, 4, 3, 3, 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] [2021-12-06 20:22:52,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:22:52,836 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] === [2021-12-06 20:22:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1694392799, now seen corresponding path program 1 times [2021-12-06 20:22:52,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:52,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859751308] [2021-12-06 20:22:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:52,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:22:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:22:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:22:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:22:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:22:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:22:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:22:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:22:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:22:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:22:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:22:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:22:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:22:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:22:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:22:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:22:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:22:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 20:22:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 20:22:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:22:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:22:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:22:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-06 20:22:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:22:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:22:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-12-06 20:22:53,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:53,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859751308] [2021-12-06 20:22:53,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859751308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:53,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:53,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:22:53,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377144675] [2021-12-06 20:22:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:53,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:22:53,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:22:53,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:22:53,770 INFO L87 Difference]: Start difference. First operand 32916 states and 44969 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-06 20:22:55,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:58,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:09,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:09,232 INFO L93 Difference]: Finished difference Result 81511 states and 112197 transitions. [2021-12-06 20:23:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:23:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 324 [2021-12-06 20:23:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:09,398 INFO L225 Difference]: With dead ends: 81511 [2021-12-06 20:23:09,398 INFO L226 Difference]: Without dead ends: 50285 [2021-12-06 20:23:09,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:23:09,461 INFO L933 BasicCegarLoop]: 5345 mSDtfsCounter, 2887 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 1162 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 9695 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:09,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3368 Valid, 9695 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1162 Valid, 1995 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-12-06 20:23:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50285 states. [2021-12-06 20:23:10,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50285 to 48981. [2021-12-06 20:23:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48981 states, 33406 states have (on average 1.250493923247321) internal successors, (41774), 34495 states have internal predecessors, (41774), 12552 states have call successors, (12552), 3022 states have call predecessors, (12552), 3022 states have return successors, (12552), 12201 states have call predecessors, (12552), 12552 states have call successors, (12552) [2021-12-06 20:23:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48981 states to 48981 states and 66878 transitions. [2021-12-06 20:23:11,076 INFO L78 Accepts]: Start accepts. Automaton has 48981 states and 66878 transitions. Word has length 324 [2021-12-06 20:23:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:11,077 INFO L470 AbstractCegarLoop]: Abstraction has 48981 states and 66878 transitions. [2021-12-06 20:23:11,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-06 20:23:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 48981 states and 66878 transitions. [2021-12-06 20:23:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-06 20:23:11,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:11,118 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 14, 14, 14, 14, 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] [2021-12-06 20:23:11,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:23:11,118 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] === [2021-12-06 20:23:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1101823976, now seen corresponding path program 1 times [2021-12-06 20:23:11,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:11,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279958005] [2021-12-06 20:23:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:11,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:23:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:23:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:23:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:23:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:23:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:23:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:23:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:23:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:23:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:23:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:23:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:23:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:23:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:23:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:23:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:23:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:23:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 20:23:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:23:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:23:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:23:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-06 20:23:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:23:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:23:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-06 20:23:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-06 20:23:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:23:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2021-12-06 20:23:12,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:12,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279958005] [2021-12-06 20:23:12,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279958005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:23:12,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:23:12,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:23:12,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68375535] [2021-12-06 20:23:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:23:12,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:23:12,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:23:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:23:12,068 INFO L87 Difference]: Start difference. First operand 48981 states and 66878 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 20:23:14,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:16,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:27,886 INFO L93 Difference]: Finished difference Result 113329 states and 155793 transitions. [2021-12-06 20:23:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:23:27,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 347 [2021-12-06 20:23:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:28,105 INFO L225 Difference]: With dead ends: 113329 [2021-12-06 20:23:28,105 INFO L226 Difference]: Without dead ends: 64339 [2021-12-06 20:23:28,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:23:28,215 INFO L933 BasicCegarLoop]: 5004 mSDtfsCounter, 2603 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 1160 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3029 SdHoareTripleChecker+Valid, 9142 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1160 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:28,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3029 Valid, 9142 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1160 Valid, 1942 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2021-12-06 20:23:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64339 states. [2021-12-06 20:23:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64339 to 62654. [2021-12-06 20:23:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62654 states, 42727 states have (on average 1.2496313806258337) internal successors, (53393), 44119 states have internal predecessors, (53393), 16037 states have call successors, (16037), 3889 states have call predecessors, (16037), 3889 states have return successors, (16037), 15583 states have call predecessors, (16037), 16037 states have call successors, (16037) [2021-12-06 20:23:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62654 states to 62654 states and 85467 transitions. [2021-12-06 20:23:30,429 INFO L78 Accepts]: Start accepts. Automaton has 62654 states and 85467 transitions. Word has length 347 [2021-12-06 20:23:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:30,430 INFO L470 AbstractCegarLoop]: Abstraction has 62654 states and 85467 transitions. [2021-12-06 20:23:30,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-06 20:23:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 62654 states and 85467 transitions. [2021-12-06 20:23:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-06 20:23:30,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:30,473 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 14, 14, 14, 14, 14, 14, 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] [2021-12-06 20:23:30,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:23:30,473 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] === [2021-12-06 20:23:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1454912358, now seen corresponding path program 1 times [2021-12-06 20:23:30,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:30,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439064606] [2021-12-06 20:23:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:30,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:23:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 20:23:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:23:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:23:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:23:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:23:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:23:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:23:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:23:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:23:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:23:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:23:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:23:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:23:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 20:23:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:23:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:23:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 20:23:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:23:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:23:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:23:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-06 20:23:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:23:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:23:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-12-06 20:23:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-06 20:23:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:23:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2021-12-06 20:23:31,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:31,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439064606] [2021-12-06 20:23:31,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439064606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:23:31,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:23:31,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:23:31,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199003351] [2021-12-06 20:23:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:23:31,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:23:31,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:23:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:23:31,565 INFO L87 Difference]: Start difference. First operand 62654 states and 85467 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 20:23:33,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:41,760 INFO L93 Difference]: Finished difference Result 64370 states and 88809 transitions. [2021-12-06 20:23:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:23:41,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 347 [2021-12-06 20:23:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:41,765 INFO L225 Difference]: With dead ends: 64370 [2021-12-06 20:23:41,765 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 20:23:41,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:23:41,873 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 2940 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 1147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3244 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:41,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3244 Valid, 6071 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 1394 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-12-06 20:23:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 20:23:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 20:23:41,874 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) [2021-12-06 20:23:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 20:23:41,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 347 [2021-12-06 20:23:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:41,882 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:23:41,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 20:23:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 20:23:41,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 20:23:41,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 20:23:41,885 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 20:23:41,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:23:41,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.