./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-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 079fce486bad33abab391a672044e04aae9233622e9697c4aac88598201cd13f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:08:03,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:08:03,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:08:03,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:08:03,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:08:03,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:08:03,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:08:03,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:08:03,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:08:03,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:08:03,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:08:03,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:08:03,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:08:03,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:08:03,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:08:03,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:08:03,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:08:03,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:08:03,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:08:03,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:08:03,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:08:03,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:08:03,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:08:03,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:08:03,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:08:03,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:08:03,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:08:03,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:08:03,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:08:03,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:08:03,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:08:03,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:08:03,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:08:03,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:08:03,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:08:03,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:08:03,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:08:03,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:08:03,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:08:03,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:08:03,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:08:03,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 17:08:03,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:08:03,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:08:03,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:08:03,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:08:03,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:08:03,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:08:03,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:08:03,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:08:03,520 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:08:03,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 17:08:03,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:08:03,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 17:08:03,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:08:03,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:08:03,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:08:03,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:08:03,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 17:08:03,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 17:08:03,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 17:08:03,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:08:03,525 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 079fce486bad33abab391a672044e04aae9233622e9697c4aac88598201cd13f [2021-12-21 17:08:03,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:08:03,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:08:03,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:08:03,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:08:03,746 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:08:03,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i [2021-12-21 17:08:03,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/495afaee7/e05ed1d16c66434e820ba05a9b94abe7/FLAG7701cfb19 [2021-12-21 17:08:04,478 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:08:04,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i [2021-12-21 17:08:04,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/495afaee7/e05ed1d16c66434e820ba05a9b94abe7/FLAG7701cfb19 [2021-12-21 17:08:04,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/495afaee7/e05ed1d16c66434e820ba05a9b94abe7 [2021-12-21 17:08:04,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:08:04,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:08:04,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:08:04,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:08:04,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:08:04,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:08:04" (1/1) ... [2021-12-21 17:08:04,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783f584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:04, skipping insertion in model container [2021-12-21 17:08:04,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:08:04" (1/1) ... [2021-12-21 17:08:04,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:08:04,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:08:07,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423587,423600] [2021-12-21 17:08:07,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423734,423747] [2021-12-21 17:08:07,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423873,423886] [2021-12-21 17:08:07,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[424031,424044] [2021-12-21 17:08:07,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:08:07,314 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:08:07,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423587,423600] [2021-12-21 17:08:07,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423734,423747] [2021-12-21 17:08:07,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[423873,423886] [2021-12-21 17:08:07,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i[424031,424044] [2021-12-21 17:08:07,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:08:07,842 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:08:07,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07 WrapperNode [2021-12-21 17:08:07,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:08:07,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:08:07,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:08:07,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:08:07,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:07,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,164 INFO L137 Inliner]: procedures = 447, calls = 4152, calls flagged for inlining = 247, calls inlined = 238, statements flattened = 8864 [2021-12-21 17:08:08,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:08:08,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:08:08,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:08:08,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:08:08,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:08:08,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:08:08,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:08:08,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:08:08,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (1/1) ... [2021-12-21 17:08:08,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:08:08,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:08:08,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 17:08:08,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 17:08:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-21 17:08:08,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-21 17:08:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 17:08:08,501 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 17:08:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-21 17:08:08,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-21 17:08:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-21 17:08:08,501 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-21 17:08:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-12-21 17:08:08,501 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-12-21 17:08:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-21 17:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-21 17:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 17:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 17:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-21 17:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-21 17:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-12-21 17:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-12-21 17:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-12-21 17:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-12-21 17:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-21 17:08:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-21 17:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-12-21 17:08:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-12-21 17:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-21 17:08:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-21 17:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-21 17:08:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-21 17:08:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-21 17:08:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-21 17:08:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-12-21 17:08:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-12-21 17:08:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-21 17:08:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-21 17:08:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-21 17:08:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-21 17:08:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 17:08:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 17:08:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-12-21 17:08:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-12-21 17:08:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-21 17:08:08,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-21 17:08:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-21 17:08:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-21 17:08:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-21 17:08:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-21 17:08:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-21 17:08:08,506 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-21 17:08:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-21 17:08:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-21 17:08:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-21 17:08:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-21 17:08:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-21 17:08:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-21 17:08:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 17:08:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 17:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-12-21 17:08:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-12-21 17:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 17:08:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 17:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-21 17:08:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-21 17:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-12-21 17:08:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-12-21 17:08:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-12-21 17:08:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-12-21 17:08:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 17:08:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 17:08:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-21 17:08:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-21 17:08:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-21 17:08:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-21 17:08:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 17:08:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-12-21 17:08:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-12-21 17:08:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-12-21 17:08:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-12-21 17:08:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-12-21 17:08:08,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-12-21 17:08:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-21 17:08:08,512 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-21 17:08:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-12-21 17:08:08,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-12-21 17:08:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 17:08:08,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 17:08:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 17:08:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-21 17:08:08,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-21 17:08:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 17:08:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-12-21 17:08:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-12-21 17:08:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-12-21 17:08:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-12-21 17:08:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-21 17:08:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-21 17:08:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 17:08:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 17:08:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-12-21 17:08:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-12-21 17:08:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-21 17:08:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-21 17:08:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-12-21 17:08:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-12-21 17:08:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-12-21 17:08:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-12-21 17:08:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-21 17:08:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-21 17:08:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-21 17:08:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-21 17:08:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-21 17:08:08,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-21 17:08:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-12-21 17:08:08,519 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-12-21 17:08:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-21 17:08:08,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-21 17:08:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-12-21 17:08:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-12-21 17:08:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:08:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-21 17:08:08,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-21 17:08:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-12-21 17:08:08,525 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-12-21 17:08:08,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-21 17:08:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-12-21 17:08:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-21 17:08:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-12-21 17:08:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 17:08:08,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 17:08:08,526 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-21 17:08:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-21 17:08:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:08:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-21 17:08:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-21 17:08:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:08:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:08:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-21 17:08:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-21 17:08:08,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:08:08,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-12-21 17:08:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 17:08:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-12-21 17:08:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-21 17:08:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-21 17:08:08,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-21 17:08:08,528 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-12-21 17:08:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-12-21 17:08:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-12-21 17:08:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-12-21 17:08:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-12-21 17:08:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-12-21 17:08:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 17:08:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 17:08:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-21 17:08:08,529 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-21 17:08:08,529 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-12-21 17:08:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-12-21 17:08:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-12-21 17:08:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-21 17:08:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-12-21 17:08:08,530 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-12-21 17:08:08,530 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-12-21 17:08:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-12-21 17:08:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-12-21 17:08:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-12-21 17:08:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-12-21 17:08:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-21 17:08:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-21 17:08:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:08:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:08:08,531 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-21 17:08:08,531 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-12-21 17:08:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 17:08:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-12-21 17:08:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-12-21 17:08:08,532 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-12-21 17:08:08,532 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-12-21 17:08:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-21 17:08:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-21 17:08:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-21 17:08:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-21 17:08:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-21 17:08:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-21 17:08:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-21 17:08:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-21 17:08:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-21 17:08:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-21 17:08:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-21 17:08:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-12-21 17:08:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-12-21 17:08:08,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-12-21 17:08:08,534 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-12-21 17:08:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-12-21 17:08:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:08:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-21 17:08:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-12-21 17:08:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-21 17:08:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-21 17:08:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 17:08:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 17:08:08,535 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 17:08:08,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 17:08:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-21 17:08:08,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 17:08:08,598 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-12-21 17:08:08,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-12-21 17:08:08,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-21 17:08:08,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-21 17:08:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-21 17:08:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-21 17:08:09,336 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:08:09,339 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:08:10,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 17:08:13,950 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-21 17:08:14,016 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:08:14,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:08:14,030 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 17:08:14,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:08:14 BoogieIcfgContainer [2021-12-21 17:08:14,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:08:14,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:08:14,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:08:14,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:08:14,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:08:04" (1/3) ... [2021-12-21 17:08:14,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75554e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:08:14, skipping insertion in model container [2021-12-21 17:08:14,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:08:07" (2/3) ... [2021-12-21 17:08:14,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75554e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:08:14, skipping insertion in model container [2021-12-21 17:08:14,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:08:14" (3/3) ... [2021-12-21 17:08:14,038 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-3com-3c59x.cil.i [2021-12-21 17:08:14,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:08:14,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 17:08:14,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:08:14,080 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 [2021-12-21 17:08:14,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 17:08:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 3025 states, 2127 states have (on average 1.3432063939821344) internal successors, (2857), 2197 states have internal predecessors, (2857), 759 states have call successors, (759), 138 states have call predecessors, (759), 137 states have return successors, (750), 735 states have call predecessors, (750), 750 states have call successors, (750) [2021-12-21 17:08:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-21 17:08:14,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:14,145 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:14,145 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] === [2021-12-21 17:08:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 986609956, now seen corresponding path program 1 times [2021-12-21 17:08:14,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:14,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674713434] [2021-12-21 17:08:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:14,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-21 17:08:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-12-21 17:08:15,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674713434] [2021-12-21 17:08:15,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674713434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:15,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:15,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:15,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580344950] [2021-12-21 17:08:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:15,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:15,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:15,034 INFO L87 Difference]: Start difference. First operand has 3025 states, 2127 states have (on average 1.3432063939821344) internal successors, (2857), 2197 states have internal predecessors, (2857), 759 states have call successors, (759), 138 states have call predecessors, (759), 137 states have return successors, (750), 735 states have call predecessors, (750), 750 states have call successors, (750) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:08:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:19,187 INFO L93 Difference]: Finished difference Result 8940 states and 13118 transitions. [2021-12-21 17:08:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 214 [2021-12-21 17:08:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:19,292 INFO L225 Difference]: With dead ends: 8940 [2021-12-21 17:08:19,292 INFO L226 Difference]: Without dead ends: 5940 [2021-12-21 17:08:19,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:19,350 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 4882 mSDsluCounter, 5526 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 2036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 10210 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2036 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:19,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5547 Valid, 10210 Invalid, 4416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2036 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-21 17:08:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2021-12-21 17:08:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5879. [2021-12-21 17:08:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 4151 states have (on average 1.3389544688026982) internal successors, (5558), 4290 states have internal predecessors, (5558), 1455 states have call successors, (1455), 272 states have call predecessors, (1455), 271 states have return successors, (1452), 1422 states have call predecessors, (1452), 1452 states have call successors, (1452) [2021-12-21 17:08:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 8465 transitions. [2021-12-21 17:08:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 8465 transitions. Word has length 214 [2021-12-21 17:08:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:19,699 INFO L470 AbstractCegarLoop]: Abstraction has 5879 states and 8465 transitions. [2021-12-21 17:08:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-21 17:08:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 8465 transitions. [2021-12-21 17:08:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-21 17:08:19,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:19,711 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 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] [2021-12-21 17:08:19,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:08:19,712 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] === [2021-12-21 17:08:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash 100661317, now seen corresponding path program 1 times [2021-12-21 17:08:19,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:19,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173206379] [2021-12-21 17:08:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:19,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-21 17:08:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:08:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:08:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-21 17:08:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1279 trivial. 0 not checked. [2021-12-21 17:08:20,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:20,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173206379] [2021-12-21 17:08:20,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173206379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:20,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:20,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:20,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671709985] [2021-12-21 17:08:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:20,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:20,251 INFO L87 Difference]: Start difference. First operand 5879 states and 8465 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-12-21 17:08:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:24,687 INFO L93 Difference]: Finished difference Result 15649 states and 22560 transitions. [2021-12-21 17:08:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 248 [2021-12-21 17:08:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:24,740 INFO L225 Difference]: With dead ends: 15649 [2021-12-21 17:08:24,741 INFO L226 Difference]: Without dead ends: 9809 [2021-12-21 17:08:24,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:24,766 INFO L933 BasicCegarLoop]: 4724 mSDtfsCounter, 4834 mSDsluCounter, 5576 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 2021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5495 SdHoareTripleChecker+Valid, 10300 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2021 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:24,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5495 Valid, 10300 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2021 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-21 17:08:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9809 states. [2021-12-21 17:08:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9809 to 9691. [2021-12-21 17:08:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 6843 states have (on average 1.336402162794096) internal successors, (9145), 7073 states have internal predecessors, (9145), 2371 states have call successors, (2371), 476 states have call predecessors, (2371), 475 states have return successors, (2368), 2314 states have call predecessors, (2368), 2368 states have call successors, (2368) [2021-12-21 17:08:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 13884 transitions. [2021-12-21 17:08:25,140 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 13884 transitions. Word has length 248 [2021-12-21 17:08:25,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:25,142 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 13884 transitions. [2021-12-21 17:08:25,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-12-21 17:08:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 13884 transitions. [2021-12-21 17:08:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-21 17:08:25,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:25,149 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:08:25,150 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] === [2021-12-21 17:08:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1503878482, now seen corresponding path program 1 times [2021-12-21 17:08:25,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239716045] [2021-12-21 17:08:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:25,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-21 17:08:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-21 17:08:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-21 17:08:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-12-21 17:08:25,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:25,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239716045] [2021-12-21 17:08:25,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239716045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:25,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:25,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:25,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132858293] [2021-12-21 17:08:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:25,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:25,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:25,615 INFO L87 Difference]: Start difference. First operand 9691 states and 13884 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-21 17:08:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:29,792 INFO L93 Difference]: Finished difference Result 26324 states and 37723 transitions. [2021-12-21 17:08:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 239 [2021-12-21 17:08:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:29,909 INFO L225 Difference]: With dead ends: 26324 [2021-12-21 17:08:29,909 INFO L226 Difference]: Without dead ends: 16672 [2021-12-21 17:08:29,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:29,962 INFO L933 BasicCegarLoop]: 5137 mSDtfsCounter, 4702 mSDsluCounter, 5874 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 1954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5351 SdHoareTripleChecker+Valid, 11011 SdHoareTripleChecker+Invalid, 4376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1954 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:29,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5351 Valid, 11011 Invalid, 4376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1954 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-21 17:08:29,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16672 states. [2021-12-21 17:08:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16672 to 16462. [2021-12-21 17:08:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16462 states, 11573 states have (on average 1.3289553270543506) internal successors, (15380), 11968 states have internal predecessors, (15380), 4027 states have call successors, (4027), 861 states have call predecessors, (4027), 860 states have return successors, (4028), 3922 states have call predecessors, (4028), 4024 states have call successors, (4028) [2021-12-21 17:08:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16462 states to 16462 states and 23435 transitions. [2021-12-21 17:08:30,561 INFO L78 Accepts]: Start accepts. Automaton has 16462 states and 23435 transitions. Word has length 239 [2021-12-21 17:08:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:30,561 INFO L470 AbstractCegarLoop]: Abstraction has 16462 states and 23435 transitions. [2021-12-21 17:08:30,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-21 17:08:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 16462 states and 23435 transitions. [2021-12-21 17:08:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-21 17:08:30,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:30,571 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:30,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:08:30,572 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] === [2021-12-21 17:08:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1826034233, now seen corresponding path program 1 times [2021-12-21 17:08:30,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:30,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319358997] [2021-12-21 17:08:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:30,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 17:08:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 17:08:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 17:08:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-21 17:08:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 17:08:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-21 17:08:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-21 17:08:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2021-12-21 17:08:31,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:31,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319358997] [2021-12-21 17:08:31,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319358997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:31,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:31,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:31,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301317782] [2021-12-21 17:08:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:31,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:31,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:31,130 INFO L87 Difference]: Start difference. First operand 16462 states and 23435 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 17:08:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:35,096 INFO L93 Difference]: Finished difference Result 41924 states and 59912 transitions. [2021-12-21 17:08:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:35,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 277 [2021-12-21 17:08:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:35,220 INFO L225 Difference]: With dead ends: 41924 [2021-12-21 17:08:35,220 INFO L226 Difference]: Without dead ends: 27197 [2021-12-21 17:08:35,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:35,276 INFO L933 BasicCegarLoop]: 7955 mSDtfsCounter, 4100 mSDsluCounter, 7460 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 1333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 15415 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1333 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:35,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 15415 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1333 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-21 17:08:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27197 states. [2021-12-21 17:08:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27197 to 26912. [2021-12-21 17:08:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26912 states, 18933 states have (on average 1.329636085142344) internal successors, (25174), 19584 states have internal predecessors, (25174), 6603 states have call successors, (6603), 1375 states have call predecessors, (6603), 1374 states have return successors, (6604), 6440 states have call predecessors, (6604), 6600 states have call successors, (6604) [2021-12-21 17:08:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26912 states to 26912 states and 38381 transitions. [2021-12-21 17:08:36,186 INFO L78 Accepts]: Start accepts. Automaton has 26912 states and 38381 transitions. Word has length 277 [2021-12-21 17:08:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:36,187 INFO L470 AbstractCegarLoop]: Abstraction has 26912 states and 38381 transitions. [2021-12-21 17:08:36,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-21 17:08:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 26912 states and 38381 transitions. [2021-12-21 17:08:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-21 17:08:36,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:36,200 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:36,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:08:36,201 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] === [2021-12-21 17:08:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1960047739, now seen corresponding path program 1 times [2021-12-21 17:08:36,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884284744] [2021-12-21 17:08:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:36,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 17:08:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 17:08:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 17:08:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-21 17:08:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 17:08:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-21 17:08:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-21 17:08:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2021-12-21 17:08:36,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884284744] [2021-12-21 17:08:36,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884284744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:36,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:36,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 17:08:36,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133600359] [2021-12-21 17:08:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:36,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 17:08:36,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 17:08:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:36,761 INFO L87 Difference]: Start difference. First operand 26912 states and 38381 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 17:08:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:39,836 INFO L93 Difference]: Finished difference Result 27195 states and 38986 transitions. [2021-12-21 17:08:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:39,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 277 [2021-12-21 17:08:39,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:39,962 INFO L225 Difference]: With dead ends: 27195 [2021-12-21 17:08:39,963 INFO L226 Difference]: Without dead ends: 27014 [2021-12-21 17:08:39,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 17:08:39,991 INFO L933 BasicCegarLoop]: 4116 mSDtfsCounter, 4185 mSDsluCounter, 5539 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 1312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1312 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:39,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 9655 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1312 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 17:08:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27014 states. [2021-12-21 17:08:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27014 to 26771. [2021-12-21 17:08:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26771 states, 18856 states have (on average 1.3297093763258379) internal successors, (25073), 19493 states have internal predecessors, (25073), 6548 states have call successors, (6548), 1366 states have call predecessors, (6548), 1366 states have return successors, (6548), 6399 states have call predecessors, (6548), 6548 states have call successors, (6548) [2021-12-21 17:08:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26771 states to 26771 states and 38169 transitions. [2021-12-21 17:08:41,005 INFO L78 Accepts]: Start accepts. Automaton has 26771 states and 38169 transitions. Word has length 277 [2021-12-21 17:08:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:41,006 INFO L470 AbstractCegarLoop]: Abstraction has 26771 states and 38169 transitions. [2021-12-21 17:08:41,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-21 17:08:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 26771 states and 38169 transitions. [2021-12-21 17:08:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-21 17:08:41,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:41,036 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:41,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:08:41,037 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] === [2021-12-21 17:08:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash -119756379, now seen corresponding path program 1 times [2021-12-21 17:08:41,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231963093] [2021-12-21 17:08:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:41,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 17:08:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 17:08:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 17:08:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-21 17:08:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-21 17:08:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-21 17:08:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-21 17:08:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-21 17:08:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-21 17:08:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-21 17:08:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-12-21 17:08:41,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:41,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231963093] [2021-12-21 17:08:41,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231963093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:41,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:41,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:41,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654864080] [2021-12-21 17:08:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:41,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:41,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:41,553 INFO L87 Difference]: Start difference. First operand 26771 states and 38169 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-21 17:08:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:45,580 INFO L93 Difference]: Finished difference Result 63766 states and 91062 transitions. [2021-12-21 17:08:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 310 [2021-12-21 17:08:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:45,741 INFO L225 Difference]: With dead ends: 63766 [2021-12-21 17:08:45,741 INFO L226 Difference]: Without dead ends: 38730 [2021-12-21 17:08:45,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:45,838 INFO L933 BasicCegarLoop]: 7407 mSDtfsCounter, 3980 mSDsluCounter, 6984 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 14391 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:45,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4619 Valid, 14391 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-21 17:08:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38730 states. [2021-12-21 17:08:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38730 to 38373. [2021-12-21 17:08:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38373 states, 26970 states have (on average 1.3267704857248794) internal successors, (35783), 27887 states have internal predecessors, (35783), 9402 states have call successors, (9402), 2000 states have call predecessors, (9402), 2000 states have return successors, (9402), 9185 states have call predecessors, (9402), 9402 states have call successors, (9402) [2021-12-21 17:08:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38373 states to 38373 states and 54587 transitions. [2021-12-21 17:08:46,984 INFO L78 Accepts]: Start accepts. Automaton has 38373 states and 54587 transitions. Word has length 310 [2021-12-21 17:08:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:46,985 INFO L470 AbstractCegarLoop]: Abstraction has 38373 states and 54587 transitions. [2021-12-21 17:08:46,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-21 17:08:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 38373 states and 54587 transitions. [2021-12-21 17:08:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-21 17:08:47,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:47,018 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 17, 17, 17, 17, 17, 17, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:47,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 17:08:47,019 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] === [2021-12-21 17:08:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash 780484005, now seen corresponding path program 1 times [2021-12-21 17:08:47,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:47,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300022147] [2021-12-21 17:08:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:47,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 17:08:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 17:08:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 17:08:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-21 17:08:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 17:08:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-21 17:08:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-21 17:08:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-21 17:08:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-21 17:08:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:08:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:08:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-21 17:08:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2021-12-21 17:08:47,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300022147] [2021-12-21 17:08:47,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300022147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:47,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:47,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:47,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039020682] [2021-12-21 17:08:47,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:47,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:47,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:47,834 INFO L87 Difference]: Start difference. First operand 38373 states and 54587 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-21 17:08:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:08:52,756 INFO L93 Difference]: Finished difference Result 90717 states and 129458 transitions. [2021-12-21 17:08:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:08:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 331 [2021-12-21 17:08:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:08:53,143 INFO L225 Difference]: With dead ends: 90717 [2021-12-21 17:08:53,144 INFO L226 Difference]: Without dead ends: 51673 [2021-12-21 17:08:53,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:08:53,274 INFO L933 BasicCegarLoop]: 8005 mSDtfsCounter, 4060 mSDsluCounter, 7462 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 1290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 15467 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1290 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-21 17:08:53,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4715 Valid, 15467 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1290 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-21 17:08:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51673 states. [2021-12-21 17:08:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51673 to 51212. [2021-12-21 17:08:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51212 states, 35990 states have (on average 1.3273131425395943) internal successors, (47770), 37223 states have internal predecessors, (47770), 12581 states have call successors, (12581), 2640 states have call predecessors, (12581), 2640 states have return successors, (12581), 12292 states have call predecessors, (12581), 12581 states have call successors, (12581) [2021-12-21 17:08:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51212 states to 51212 states and 72932 transitions. [2021-12-21 17:08:55,166 INFO L78 Accepts]: Start accepts. Automaton has 51212 states and 72932 transitions. Word has length 331 [2021-12-21 17:08:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:08:55,166 INFO L470 AbstractCegarLoop]: Abstraction has 51212 states and 72932 transitions. [2021-12-21 17:08:55,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-21 17:08:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 51212 states and 72932 transitions. [2021-12-21 17:08:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2021-12-21 17:08:55,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:08:55,213 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 17, 17, 17, 17, 17, 17, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:08:55,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 17:08:55,213 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] === [2021-12-21 17:08:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:08:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash 905777987, now seen corresponding path program 1 times [2021-12-21 17:08:55,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:08:55,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649402013] [2021-12-21 17:08:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:08:55,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:08:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:08:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:08:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:08:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:08:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:08:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:08:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:08:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:08:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:08:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:08:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:08:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 17:08:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 17:08:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 17:08:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 17:08:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 17:08:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 17:08:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-21 17:08:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-21 17:08:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 17:08:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-21 17:08:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-21 17:08:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-21 17:08:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-21 17:08:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-21 17:08:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-21 17:08:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-21 17:08:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-21 17:08:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-21 17:08:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-21 17:08:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:08:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 17:08:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:08:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-21 17:08:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:08:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2021-12-21 17:08:55,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:08:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649402013] [2021-12-21 17:08:55,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649402013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:08:55,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:08:55,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:08:55,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147177404] [2021-12-21 17:08:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:08:55,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:08:55,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:08:55,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:08:55,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:08:55,858 INFO L87 Difference]: Start difference. First operand 51212 states and 72932 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)