./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:40:50,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:40:50,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:40:50,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:40:50,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:40:50,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:40:50,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:40:50,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:40:50,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:40:50,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:40:50,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:40:50,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:40:50,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:40:50,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:40:50,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:40:50,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:40:50,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:40:50,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:40:50,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:40:50,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:40:50,819 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:40:50,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:40:50,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:40:50,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:40:50,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:40:50,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:40:50,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:40:50,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:40:50,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:40:50,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:40:50,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:40:50,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:40:50,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:40:50,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:40:50,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:40:50,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:40:50,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:40:50,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:40:50,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:40:50,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:40:50,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:40:50,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:40:50,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:40:50,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:40:50,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:40:50,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:40:50,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:40:50,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:40:50,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:40:50,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:40:50,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:40:50,866 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:40:50,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:40:50,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:40:50,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:40:50,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:40:50,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:40:50,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:40:50,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:40:50,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:40:50,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:40:50,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:40:50,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:40:50,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:40:50,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:40:50,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:40:50,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:40:50,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:40:50,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:40:50,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:40:50,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:40:50,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:40:50,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:40:50,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2022-07-14 00:40:51,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:40:51,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:40:51,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:40:51,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:40:51,108 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:40:51,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-07-14 00:40:51,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44ed3d1b/d7acb040219147a284fd778d22b5f1d3/FLAG1f20c83c1 [2022-07-14 00:40:51,706 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:40:51,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-07-14 00:40:51,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44ed3d1b/d7acb040219147a284fd778d22b5f1d3/FLAG1f20c83c1 [2022-07-14 00:40:51,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44ed3d1b/d7acb040219147a284fd778d22b5f1d3 [2022-07-14 00:40:51,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:40:51,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:40:51,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:40:51,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:40:51,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:40:51,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:40:51" (1/1) ... [2022-07-14 00:40:51,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adb2458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:51, skipping insertion in model container [2022-07-14 00:40:51,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:40:51" (1/1) ... [2022-07-14 00:40:51,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:40:52,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:40:52,539 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2022-07-14 00:40:52,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:40:52,874 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:40:52,913 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2022-07-14 00:40:53,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:40:53,080 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:40:53,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53 WrapperNode [2022-07-14 00:40:53,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:40:53,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:40:53,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:40:53,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:40:53,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,253 INFO L137 Inliner]: procedures = 203, calls = 1280, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 3595 [2022-07-14 00:40:53,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:40:53,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:40:53,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:40:53,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:40:53,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:40:53,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:40:53,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:40:53,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:40:53,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (1/1) ... [2022-07-14 00:40:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:40:53,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:40:53,461 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) [2022-07-14 00:40:53,463 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 [2022-07-14 00:40:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2022-07-14 00:40:53,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2022-07-14 00:40:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-07-14 00:40:53,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-07-14 00:40:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:40:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:40:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:40:53,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:40:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2022-07-14 00:40:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2022-07-14 00:40:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2022-07-14 00:40:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2022-07-14 00:40:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2022-07-14 00:40:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2022-07-14 00:40:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-14 00:40:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-14 00:40:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:40:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:40:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2022-07-14 00:40:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2022-07-14 00:40:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2022-07-14 00:40:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2022-07-14 00:40:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-07-14 00:40:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-07-14 00:40:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2022-07-14 00:40:53,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2022-07-14 00:40:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 00:40:53,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 00:40:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:40:53,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:40:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2022-07-14 00:40:53,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2022-07-14 00:40:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:40:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:40:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:40:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:40:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-07-14 00:40:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-07-14 00:40:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2022-07-14 00:40:53,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2022-07-14 00:40:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:40:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-14 00:40:53,504 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-14 00:40:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:40:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2022-07-14 00:40:53,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2022-07-14 00:40:53,505 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2022-07-14 00:40:53,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2022-07-14 00:40:53,505 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-14 00:40:53,505 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-14 00:40:53,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-14 00:40:53,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-14 00:40:53,505 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-14 00:40:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-14 00:40:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 00:40:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 00:40:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:40:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:40:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-07-14 00:40:53,508 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-07-14 00:40:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-14 00:40:53,508 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-14 00:40:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-14 00:40:53,508 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-14 00:40:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-07-14 00:40:53,508 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-07-14 00:40:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:40:53,509 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:40:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-14 00:40:53,509 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-14 00:40:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2022-07-14 00:40:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2022-07-14 00:40:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-14 00:40:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-14 00:40:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-14 00:40:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-14 00:40:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:40:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:40:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:40:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 00:40:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 00:40:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-14 00:40:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-14 00:40:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-14 00:40:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-14 00:40:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:40:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:40:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2022-07-14 00:40:53,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2022-07-14 00:40:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:40:53,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:40:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2022-07-14 00:40:53,513 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2022-07-14 00:40:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-07-14 00:40:53,513 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-07-14 00:40:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:40:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2022-07-14 00:40:53,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2022-07-14 00:40:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2022-07-14 00:40:53,514 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2022-07-14 00:40:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2022-07-14 00:40:53,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2022-07-14 00:40:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:40:53,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:40:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2022-07-14 00:40:53,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2022-07-14 00:40:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:40:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-07-14 00:40:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2022-07-14 00:40:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2022-07-14 00:40:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-07-14 00:40:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2022-07-14 00:40:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2022-07-14 00:40:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-14 00:40:53,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-14 00:40:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:40:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:40:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-14 00:40:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2022-07-14 00:40:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2022-07-14 00:40:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2022-07-14 00:40:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2022-07-14 00:40:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-07-14 00:40:53,521 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-07-14 00:40:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-14 00:40:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-14 00:40:53,522 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-14 00:40:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-14 00:40:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2022-07-14 00:40:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2022-07-14 00:40:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-07-14 00:40:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-07-14 00:40:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 00:40:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 00:40:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2022-07-14 00:40:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2022-07-14 00:40:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2022-07-14 00:40:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2022-07-14 00:40:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:40:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:40:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2022-07-14 00:40:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2022-07-14 00:40:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-14 00:40:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-14 00:40:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2022-07-14 00:40:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2022-07-14 00:40:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:40:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-14 00:40:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-14 00:40:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:40:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:40:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-14 00:40:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-14 00:40:54,006 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:40:54,010 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:40:54,168 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:41:06,485 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:41:06,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:41:06,497 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 00:41:06,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:41:06 BoogieIcfgContainer [2022-07-14 00:41:06,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:41:06,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:41:06,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:41:06,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:41:06,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:40:51" (1/3) ... [2022-07-14 00:41:06,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ad514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:41:06, skipping insertion in model container [2022-07-14 00:41:06,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:40:53" (2/3) ... [2022-07-14 00:41:06,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ad514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:41:06, skipping insertion in model container [2022-07-14 00:41:06,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:41:06" (3/3) ... [2022-07-14 00:41:06,506 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-07-14 00:41:06,520 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:41:06,521 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:41:06,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:41:06,587 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c38e945, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a224bde [2022-07-14 00:41:06,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:41:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 937 states have (on average 1.4130202774813234) internal successors, (1324), 980 states have internal predecessors, (1324), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) [2022-07-14 00:41:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 00:41:06,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:41:06,605 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:41:06,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:41:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:41:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -826194177, now seen corresponding path program 1 times [2022-07-14 00:41:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:41:06,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054016443] [2022-07-14 00:41:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:41:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:41:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:41:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:41:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:41:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:41:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:41:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:41:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-14 00:41:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:41:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:41:07,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:41:07,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054016443] [2022-07-14 00:41:07,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054016443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:41:07,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:41:07,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:41:07,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378307616] [2022-07-14 00:41:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:41:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:41:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:41:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:41:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:41:07,184 INFO L87 Difference]: Start difference. First operand has 1328 states, 937 states have (on average 1.4130202774813234) internal successors, (1324), 980 states have internal predecessors, (1324), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 00:41:09,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:11,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:41:17,559 INFO L93 Difference]: Finished difference Result 4152 states and 6323 transitions. [2022-07-14 00:41:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:41:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-07-14 00:41:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:41:17,587 INFO L225 Difference]: With dead ends: 4152 [2022-07-14 00:41:17,587 INFO L226 Difference]: Without dead ends: 2812 [2022-07-14 00:41:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:41:17,603 INFO L413 NwaCegarLoop]: 2106 mSDtfsCounter, 2405 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 871 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:41:17,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 4099 Invalid, 2485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [871 Valid, 1612 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2022-07-14 00:41:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2022-07-14 00:41:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2406. [2022-07-14 00:41:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1688 states have (on average 1.3625592417061612) internal successors, (2300), 1748 states have internal predecessors, (2300), 592 states have call successors, (592), 126 states have call predecessors, (592), 125 states have return successors, (579), 573 states have call predecessors, (579), 579 states have call successors, (579) [2022-07-14 00:41:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3471 transitions. [2022-07-14 00:41:17,789 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3471 transitions. Word has length 58 [2022-07-14 00:41:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:41:17,790 INFO L495 AbstractCegarLoop]: Abstraction has 2406 states and 3471 transitions. [2022-07-14 00:41:17,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 00:41:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3471 transitions. [2022-07-14 00:41:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-14 00:41:17,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:41:17,798 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:41:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:41:17,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:41:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:41:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2130658151, now seen corresponding path program 1 times [2022-07-14 00:41:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:41:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204390358] [2022-07-14 00:41:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:41:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:41:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:41:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:41:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:41:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:41:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:41:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:41:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:41:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:41:18,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:41:18,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204390358] [2022-07-14 00:41:18,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204390358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:41:18,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:41:18,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:41:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424494974] [2022-07-14 00:41:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:41:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:41:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:41:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:41:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:41:18,126 INFO L87 Difference]: Start difference. First operand 2406 states and 3471 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 00:41:20,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:41:26,900 INFO L93 Difference]: Finished difference Result 6388 states and 9553 transitions. [2022-07-14 00:41:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:41:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2022-07-14 00:41:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:41:26,936 INFO L225 Difference]: With dead ends: 6388 [2022-07-14 00:41:26,936 INFO L226 Difference]: Without dead ends: 6364 [2022-07-14 00:41:26,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:41:26,942 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 4253 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 1977 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1977 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:41:26,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 4152 Invalid, 3861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1977 Valid, 1883 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-07-14 00:41:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2022-07-14 00:41:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 4728. [2022-07-14 00:41:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 3325 states have (on average 1.3621052631578947) internal successors, (4529), 3433 states have internal predecessors, (4529), 1158 states have call successors, (1158), 247 states have call predecessors, (1158), 244 states have return successors, (1146), 1131 states have call predecessors, (1146), 1146 states have call successors, (1146) [2022-07-14 00:41:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 6833 transitions. [2022-07-14 00:41:27,104 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 6833 transitions. Word has length 56 [2022-07-14 00:41:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:41:27,105 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 6833 transitions. [2022-07-14 00:41:27,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 00:41:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 6833 transitions. [2022-07-14 00:41:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-14 00:41:27,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:41:27,106 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:41:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:41:27,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:41:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:41:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1626874934, now seen corresponding path program 1 times [2022-07-14 00:41:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:41:27,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681194706] [2022-07-14 00:41:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:41:27,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:41:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:41:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:41:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:41:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:41:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:41:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:41:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:41:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:41:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:41:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681194706] [2022-07-14 00:41:27,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681194706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:41:27,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:41:27,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:41:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239545070] [2022-07-14 00:41:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:41:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:41:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:41:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:41:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:41:27,441 INFO L87 Difference]: Start difference. First operand 4728 states and 6833 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 00:41:29,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:41:37,941 INFO L93 Difference]: Finished difference Result 17375 states and 25771 transitions. [2022-07-14 00:41:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:41:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2022-07-14 00:41:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:41:38,011 INFO L225 Difference]: With dead ends: 17375 [2022-07-14 00:41:38,012 INFO L226 Difference]: Without dead ends: 12662 [2022-07-14 00:41:38,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:41:38,036 INFO L413 NwaCegarLoop]: 2152 mSDtfsCounter, 3521 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 1108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:41:38,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3839 Valid, 5092 Invalid, 3555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 2446 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-07-14 00:41:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2022-07-14 00:41:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 9387. [2022-07-14 00:41:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 6610 states have (on average 1.3629349470499244) internal successors, (9009), 6818 states have internal predecessors, (9009), 2294 states have call successors, (2294), 487 states have call predecessors, (2294), 482 states have return successors, (2276), 2249 states have call predecessors, (2276), 2276 states have call successors, (2276) [2022-07-14 00:41:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 13579 transitions. [2022-07-14 00:41:38,419 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 13579 transitions. Word has length 57 [2022-07-14 00:41:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:41:38,420 INFO L495 AbstractCegarLoop]: Abstraction has 9387 states and 13579 transitions. [2022-07-14 00:41:38,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 00:41:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 13579 transitions. [2022-07-14 00:41:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-14 00:41:38,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:41:38,423 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:41:38,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:41:38,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:41:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:41:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1151289838, now seen corresponding path program 1 times [2022-07-14 00:41:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:41:38,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720821604] [2022-07-14 00:41:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:41:38,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:41:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:41:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:41:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:41:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:41:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:41:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:41:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:41:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:41:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:41:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:41:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:41:38,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720821604] [2022-07-14 00:41:38,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720821604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:41:38,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:41:38,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:41:38,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356024166] [2022-07-14 00:41:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:41:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:41:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:41:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:41:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:41:38,699 INFO L87 Difference]: Start difference. First operand 9387 states and 13579 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-14 00:41:40,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:42,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:41:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:41:50,129 INFO L93 Difference]: Finished difference Result 34642 states and 51390 transitions. [2022-07-14 00:41:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:41:50,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-07-14 00:41:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:41:50,258 INFO L225 Difference]: With dead ends: 34642 [2022-07-14 00:41:50,258 INFO L226 Difference]: Without dead ends: 25267 [2022-07-14 00:41:50,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:41:50,302 INFO L413 NwaCegarLoop]: 1988 mSDtfsCounter, 3533 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 1163 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1163 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:41:50,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3849 Valid, 4726 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1163 Valid, 2462 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-07-14 00:41:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25267 states. [2022-07-14 00:41:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25267 to 18698. [2022-07-14 00:41:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18698 states, 13181 states have (on average 1.3634018663227372) internal successors, (17971), 13585 states have internal predecessors, (17971), 4558 states have call successors, (4558), 966 states have call predecessors, (4558), 958 states have return successors, (4538), 4482 states have call predecessors, (4538), 4538 states have call successors, (4538) [2022-07-14 00:41:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18698 states to 18698 states and 27067 transitions. [2022-07-14 00:41:51,034 INFO L78 Accepts]: Start accepts. Automaton has 18698 states and 27067 transitions. Word has length 75 [2022-07-14 00:41:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:41:51,036 INFO L495 AbstractCegarLoop]: Abstraction has 18698 states and 27067 transitions. [2022-07-14 00:41:51,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-14 00:41:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 18698 states and 27067 transitions. [2022-07-14 00:41:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-14 00:41:51,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:41:51,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:41:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:41:51,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:41:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:41:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1212646870, now seen corresponding path program 1 times [2022-07-14 00:41:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:41:51,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928473985] [2022-07-14 00:41:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:41:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:41:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:41:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:41:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:41:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:41:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:41:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:41:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:41:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:41:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:41:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:41:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:41:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:41:51,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928473985] [2022-07-14 00:41:51,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928473985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:41:51,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:41:51,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-14 00:41:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226435895] [2022-07-14 00:41:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:41:51,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 00:41:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:41:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 00:41:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:41:51,890 INFO L87 Difference]: Start difference. First operand 18698 states and 27067 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 00:41:53,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:42:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:42:20,557 INFO L93 Difference]: Finished difference Result 65778 states and 98173 transitions. [2022-07-14 00:42:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-14 00:42:20,557 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-07-14 00:42:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:42:20,748 INFO L225 Difference]: With dead ends: 65778 [2022-07-14 00:42:20,748 INFO L226 Difference]: Without dead ends: 47095 [2022-07-14 00:42:20,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-07-14 00:42:20,814 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 5207 mSDsluCounter, 16515 mSDsCounter, 0 mSdLazyCounter, 13567 mSolverCounterSat, 2381 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 18706 SdHoareTripleChecker+Invalid, 15949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2381 IncrementalHoareTripleChecker+Valid, 13567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:42:20,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 18706 Invalid, 15949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2381 Valid, 13567 Invalid, 1 Unknown, 0 Unchecked, 26.4s Time] [2022-07-14 00:42:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47095 states. [2022-07-14 00:42:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47095 to 32538. [2022-07-14 00:42:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32538 states, 22927 states have (on average 1.3639813320539103) internal successors, (31272), 23638 states have internal predecessors, (31272), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7813 states have call predecessors, (7954), 7912 states have call successors, (7954) [2022-07-14 00:42:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32538 states to 32538 states and 47158 transitions. [2022-07-14 00:42:21,988 INFO L78 Accepts]: Start accepts. Automaton has 32538 states and 47158 transitions. Word has length 77 [2022-07-14 00:42:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:42:21,988 INFO L495 AbstractCegarLoop]: Abstraction has 32538 states and 47158 transitions. [2022-07-14 00:42:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 00:42:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32538 states and 47158 transitions. [2022-07-14 00:42:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-14 00:42:21,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:42:21,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:42:21,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:42:21,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:42:21,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:42:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1467384912, now seen corresponding path program 1 times [2022-07-14 00:42:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:42:21,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416588615] [2022-07-14 00:42:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:42:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:42:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:42:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:42:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:42:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:42:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:42:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:42:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:42:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:42:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:42:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 00:42:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-14 00:42:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:42:22,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:42:22,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416588615] [2022-07-14 00:42:22,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416588615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:42:22,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:42:22,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:42:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893650193] [2022-07-14 00:42:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:42:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:42:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:42:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:42:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:42:22,479 INFO L87 Difference]: Start difference. First operand 32538 states and 47158 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:42:24,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:42:26,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:42:28,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:42:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:42:37,841 INFO L93 Difference]: Finished difference Result 76464 states and 112983 transitions. [2022-07-14 00:42:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:42:37,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-07-14 00:42:37,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:42:38,078 INFO L225 Difference]: With dead ends: 76464 [2022-07-14 00:42:38,078 INFO L226 Difference]: Without dead ends: 43941 [2022-07-14 00:42:38,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:42:38,150 INFO L413 NwaCegarLoop]: 3327 mSDtfsCounter, 2702 mSDsluCounter, 4111 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 821 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 7438 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:42:38,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 7438 Invalid, 3638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [821 Valid, 2814 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2022-07-14 00:42:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43941 states. [2022-07-14 00:42:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43941 to 32519. [2022-07-14 00:42:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32519 states, 22908 states have (on average 1.3635847738781213) internal successors, (31237), 23621 states have internal predecessors, (31237), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7811 states have call predecessors, (7954), 7912 states have call successors, (7954) [2022-07-14 00:42:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32519 states to 32519 states and 47123 transitions. [2022-07-14 00:42:39,371 INFO L78 Accepts]: Start accepts. Automaton has 32519 states and 47123 transitions. Word has length 92 [2022-07-14 00:42:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:42:39,372 INFO L495 AbstractCegarLoop]: Abstraction has 32519 states and 47123 transitions. [2022-07-14 00:42:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:42:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 32519 states and 47123 transitions. [2022-07-14 00:42:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 00:42:39,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:42:39,379 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-14 00:42:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:42:39,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:42:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:42:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -430904096, now seen corresponding path program 1 times [2022-07-14 00:42:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:42:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112227147] [2022-07-14 00:42:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:42:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:42:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:42:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:42:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:42:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:42:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:42:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:42:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:42:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:42:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:42:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:42:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:42:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-14 00:42:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:42:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:42:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-14 00:42:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:42:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112227147] [2022-07-14 00:42:40,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112227147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:42:40,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:42:40,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-14 00:42:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146455595] [2022-07-14 00:42:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:42:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:42:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:42:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:42:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:42:40,317 INFO L87 Difference]: Start difference. First operand 32519 states and 47123 transitions. Second operand has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-14 00:42:42,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:43:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:43:22,734 INFO L93 Difference]: Finished difference Result 98229 states and 146160 transitions. [2022-07-14 00:43:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 00:43:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 98 [2022-07-14 00:43:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:43:23,109 INFO L225 Difference]: With dead ends: 98229 [2022-07-14 00:43:23,109 INFO L226 Difference]: Without dead ends: 65725 [2022-07-14 00:43:23,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-07-14 00:43:23,229 INFO L413 NwaCegarLoop]: 2173 mSDtfsCounter, 5698 mSDsluCounter, 18207 mSDsCounter, 0 mSdLazyCounter, 14824 mSolverCounterSat, 2629 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6077 SdHoareTripleChecker+Valid, 20380 SdHoareTripleChecker+Invalid, 17454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2629 IncrementalHoareTripleChecker+Valid, 14824 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:43:23,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6077 Valid, 20380 Invalid, 17454 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2629 Valid, 14824 Invalid, 1 Unknown, 0 Unchecked, 38.4s Time] [2022-07-14 00:43:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65725 states. [2022-07-14 00:43:25,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65725 to 38339. [2022-07-14 00:43:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38339 states, 27008 states have (on average 1.3634848933649288) internal successors, (36825), 27850 states have internal predecessors, (36825), 9350 states have call successors, (9350), 1976 states have call predecessors, (9350), 1980 states have return successors, (9378), 9205 states have call predecessors, (9378), 9330 states have call successors, (9378) [2022-07-14 00:43:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38339 states to 38339 states and 55553 transitions. [2022-07-14 00:43:25,377 INFO L78 Accepts]: Start accepts. Automaton has 38339 states and 55553 transitions. Word has length 98 [2022-07-14 00:43:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:43:25,377 INFO L495 AbstractCegarLoop]: Abstraction has 38339 states and 55553 transitions. [2022-07-14 00:43:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-14 00:43:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38339 states and 55553 transitions. [2022-07-14 00:43:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 00:43:25,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:43:25,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-14 00:43:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:43:25,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:43:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:43:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1168379698, now seen corresponding path program 1 times [2022-07-14 00:43:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:43:25,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169945628] [2022-07-14 00:43:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:43:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:43:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:43:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:43:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:43:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:43:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:43:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:43:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:43:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:43:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:43:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:43:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:43:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:43:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:43:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-14 00:43:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-14 00:43:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:43:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-14 00:43:26,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:43:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169945628] [2022-07-14 00:43:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169945628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:43:26,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:43:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-14 00:43:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674725320] [2022-07-14 00:43:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:43:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:43:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:43:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:43:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:43:26,768 INFO L87 Difference]: Start difference. First operand 38339 states and 55553 transitions. Second operand has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-14 00:43:28,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:43:30,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:44:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:44:21,267 INFO L93 Difference]: Finished difference Result 83896 states and 123849 transitions. [2022-07-14 00:44:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-14 00:44:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 110 [2022-07-14 00:44:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:44:21,457 INFO L225 Difference]: With dead ends: 83896 [2022-07-14 00:44:21,457 INFO L226 Difference]: Without dead ends: 45572 [2022-07-14 00:44:21,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-07-14 00:44:21,543 INFO L413 NwaCegarLoop]: 3509 mSDtfsCounter, 3793 mSDsluCounter, 29578 mSDsCounter, 0 mSdLazyCounter, 18930 mSolverCounterSat, 1726 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 33087 SdHoareTripleChecker+Invalid, 20658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1726 IncrementalHoareTripleChecker+Valid, 18930 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:44:21,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4120 Valid, 33087 Invalid, 20658 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1726 Valid, 18930 Invalid, 2 Unknown, 0 Unchecked, 49.9s Time] [2022-07-14 00:44:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45572 states. [2022-07-14 00:44:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45572 to 33462. [2022-07-14 00:44:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33462 states, 23551 states have (on average 1.3642308182242793) internal successors, (32129), 24286 states have internal predecessors, (32129), 8183 states have call successors, (8183), 1722 states have call predecessors, (8183), 1727 states have return successors, (8213), 8062 states have call predecessors, (8213), 8171 states have call successors, (8213) [2022-07-14 00:44:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33462 states to 33462 states and 48525 transitions. [2022-07-14 00:44:23,441 INFO L78 Accepts]: Start accepts. Automaton has 33462 states and 48525 transitions. Word has length 110 [2022-07-14 00:44:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:44:23,442 INFO L495 AbstractCegarLoop]: Abstraction has 33462 states and 48525 transitions. [2022-07-14 00:44:23,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-14 00:44:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 33462 states and 48525 transitions. [2022-07-14 00:44:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-14 00:44:23,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:44:23,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:44:23,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 00:44:23,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:44:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:44:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1791551026, now seen corresponding path program 1 times [2022-07-14 00:44:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:44:23,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159630051] [2022-07-14 00:44:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:44:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:44:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:44:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:44:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:44:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:44:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:44:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:44:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:44:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:44:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:44:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 00:44:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-14 00:44:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-14 00:44:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:44:23,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:44:23,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159630051] [2022-07-14 00:44:23,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159630051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:44:23,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:44:23,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:44:23,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721836489] [2022-07-14 00:44:23,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:44:23,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:44:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:44:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:44:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:44:23,893 INFO L87 Difference]: Start difference. First operand 33462 states and 48525 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-14 00:44:25,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:44:28,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:44:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:44:49,693 INFO L93 Difference]: Finished difference Result 73425 states and 108602 transitions. [2022-07-14 00:44:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:44:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-07-14 00:44:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:44:49,864 INFO L225 Difference]: With dead ends: 73425 [2022-07-14 00:44:49,865 INFO L226 Difference]: Without dead ends: 39978 [2022-07-14 00:44:49,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-14 00:44:49,945 INFO L413 NwaCegarLoop]: 2032 mSDtfsCounter, 3571 mSDsluCounter, 3581 mSDsCounter, 0 mSdLazyCounter, 9514 mSolverCounterSat, 1612 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 11128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 9514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:44:49,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 5613 Invalid, 11128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1612 Valid, 9514 Invalid, 2 Unknown, 0 Unchecked, 23.4s Time] [2022-07-14 00:44:49,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39978 states. [2022-07-14 00:44:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39978 to 26578. [2022-07-14 00:44:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26578 states, 18706 states have (on average 1.363733561424142) internal successors, (25510), 19287 states have internal predecessors, (25510), 6495 states have call successors, (6495), 1374 states have call predecessors, (6495), 1376 states have return successors, (6518), 6399 states have call predecessors, (6518), 6485 states have call successors, (6518) [2022-07-14 00:44:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26578 states to 26578 states and 38523 transitions. [2022-07-14 00:44:51,542 INFO L78 Accepts]: Start accepts. Automaton has 26578 states and 38523 transitions. Word has length 104 [2022-07-14 00:44:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:44:51,542 INFO L495 AbstractCegarLoop]: Abstraction has 26578 states and 38523 transitions. [2022-07-14 00:44:51,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-14 00:44:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 26578 states and 38523 transitions. [2022-07-14 00:44:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-14 00:44:51,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:44:51,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-14 00:44:51,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:44:51,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:44:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:44:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1536552188, now seen corresponding path program 1 times [2022-07-14 00:44:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:44:51,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598417842] [2022-07-14 00:44:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:44:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:44:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:44:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:44:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:44:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:44:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:44:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:44:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:44:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:44:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:44:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 00:44:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 00:44:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:44:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:44:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598417842] [2022-07-14 00:44:52,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598417842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:44:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354827202] [2022-07-14 00:44:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:44:52,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:44:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:44:52,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:44:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:44:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 00:44:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:44:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 00:44:53,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:44:53,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354827202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:44:53,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:44:53,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-07-14 00:44:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203380284] [2022-07-14 00:44:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:44:53,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:44:53,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:44:53,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:44:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:44:53,087 INFO L87 Difference]: Start difference. First operand 26578 states and 38523 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:44:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:44:54,560 INFO L93 Difference]: Finished difference Result 27719 states and 40333 transitions. [2022-07-14 00:44:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:44:54,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-14 00:44:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:44:54,620 INFO L225 Difference]: With dead ends: 27719 [2022-07-14 00:44:54,620 INFO L226 Difference]: Without dead ends: 16188 [2022-07-14 00:44:54,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-07-14 00:44:54,651 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 1460 mSDsluCounter, 8177 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 10365 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:44:54,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 10365 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 00:44:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16188 states. [2022-07-14 00:44:55,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16188 to 15107. [2022-07-14 00:44:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15107 states, 10636 states have (on average 1.361602106054908) internal successors, (14482), 10964 states have internal predecessors, (14482), 3682 states have call successors, (3682), 787 states have call predecessors, (3682), 788 states have return successors, (3692), 3628 states have call predecessors, (3692), 3674 states have call successors, (3692) [2022-07-14 00:44:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15107 states to 15107 states and 21856 transitions. [2022-07-14 00:44:55,572 INFO L78 Accepts]: Start accepts. Automaton has 15107 states and 21856 transitions. Word has length 104 [2022-07-14 00:44:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:44:55,572 INFO L495 AbstractCegarLoop]: Abstraction has 15107 states and 21856 transitions. [2022-07-14 00:44:55,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:44:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 15107 states and 21856 transitions. [2022-07-14 00:44:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-14 00:44:55,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:44:55,576 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-14 00:44:55,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:44:55,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 00:44:55,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:44:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:44:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1756565895, now seen corresponding path program 1 times [2022-07-14 00:44:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:44:55,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474187575] [2022-07-14 00:44:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:44:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:44:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:44:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:44:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:44:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:44:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:44:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:44:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:44:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:44:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:44:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 00:44:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-14 00:44:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:44:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:44:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:44:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474187575] [2022-07-14 00:44:56,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474187575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:44:56,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:44:56,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-14 00:44:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637667697] [2022-07-14 00:44:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:44:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 00:44:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:44:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 00:44:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:44:56,267 INFO L87 Difference]: Start difference. First operand 15107 states and 21856 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)