./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.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 ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:20:52,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:20:52,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:20:52,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:20:52,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:20:52,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:20:52,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:20:52,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:20:52,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:20:52,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:20:52,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:20:52,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:20:52,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:20:52,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:20:52,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:20:52,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:20:52,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:20:52,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:20:52,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:20:52,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:20:52,789 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:20:52,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:20:52,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:20:52,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:20:52,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:20:52,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:20:52,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:20:52,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:20:52,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:20:52,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:20:52,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:20:52,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:20:52,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:20:52,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:20:52,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:20:52,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:20:52,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:20:52,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:20:52,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:20:52,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:20:52,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:20:52,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:20:52,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:20:52,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:20:52,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:20:52,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:20:52,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:20:52,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:20:52,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:20:52,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:20:52,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:20:52,842 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:20:52,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:20:52,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:20:52,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:20:52,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:20:52,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:20:52,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:20:52,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:20:52,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:20:52,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:20:52,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:20:52,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:20:52,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:20:52,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:20:52,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:20:52,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:20:52,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:20:52,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:20:52,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:20:52,846 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:20:52,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:20:52,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:20:52,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2022-07-19 23:20:53,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:20:53,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:20:53,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:20:53,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:20:53,126 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:20:53,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-19 23:20:53,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746be7d93/e160d1e2688a4ccdbb2798053da494e7/FLAGbfa5550df [2022-07-19 23:20:53,850 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:20:53,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-19 23:20:53,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746be7d93/e160d1e2688a4ccdbb2798053da494e7/FLAGbfa5550df [2022-07-19 23:20:53,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746be7d93/e160d1e2688a4ccdbb2798053da494e7 [2022-07-19 23:20:53,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:20:53,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:20:53,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:20:53,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:20:53,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:20:53,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:53" (1/1) ... [2022-07-19 23:20:53,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea87f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:53, skipping insertion in model container [2022-07-19 23:20:53,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:53" (1/1) ... [2022-07-19 23:20:53,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:20:54,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:20:55,935 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-19 23:20:56,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:20:56,106 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:20:56,461 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-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2022-07-19 23:20:56,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:20:56,580 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:20:56,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56 WrapperNode [2022-07-19 23:20:56,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:20:56,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:20:56,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:20:56,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:20:56,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:56,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:56,845 INFO L137 Inliner]: procedures = 373, calls = 2971, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5915 [2022-07-19 23:20:56,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:20:56,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:20:56,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:20:56,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:20:56,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:56,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:56,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:56,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:57,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:57,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:57,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:57,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:20:57,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:20:57,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:20:57,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:20:57,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (1/1) ... [2022-07-19 23:20:57,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:20:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:20:57,168 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) [2022-07-19 23:20:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-07-19 23:20:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-07-19 23:20:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-07-19 23:20:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-07-19 23:20:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-07-19 23:20:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-07-19 23:20:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-07-19 23:20:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-07-19 23:20:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-19 23:20:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-19 23:20:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-19 23:20:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-19 23:20:57,199 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 [2022-07-19 23:20:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-19 23:20:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-19 23:20:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-19 23:20:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-19 23:20:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-07-19 23:20:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-07-19 23:20:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-19 23:20:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-19 23:20:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-07-19 23:20:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-07-19 23:20:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-07-19 23:20:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-07-19 23:20:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-07-19 23:20:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-07-19 23:20:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-07-19 23:20:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-07-19 23:20:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:20:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:20:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-19 23:20:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-19 23:20:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-07-19 23:20:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-07-19 23:20:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-19 23:20:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-19 23:20:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-07-19 23:20:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-07-19 23:20:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:20:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:20:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-19 23:20:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-19 23:20:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:20:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:20:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-07-19 23:20:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-07-19 23:20:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-07-19 23:20:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-07-19 23:20:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-19 23:20:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-19 23:20:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-07-19 23:20:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-07-19 23:20:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-19 23:20:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-19 23:20:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-19 23:20:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-19 23:20:57,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2022-07-19 23:20:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2022-07-19 23:20:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-07-19 23:20:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-07-19 23:20:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-07-19 23:20:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-07-19 23:20:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-07-19 23:20:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-07-19 23:20:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-07-19 23:20:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-07-19 23:20:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-19 23:20:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2022-07-19 23:20:57,224 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:20:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:20:57,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-07-19 23:20:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-07-19 23:20:57,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-19 23:20:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-19 23:20:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:20:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:20:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:20:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-19 23:20:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-19 23:20:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-07-19 23:20:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-07-19 23:20:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-07-19 23:20:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-07-19 23:20:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-07-19 23:20:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-07-19 23:20:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-07-19 23:20:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-07-19 23:20:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-19 23:20:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-19 23:20:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-07-19 23:20:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-07-19 23:20:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:20:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 23:20:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 23:20:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-19 23:20:57,228 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-07-19 23:20:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-07-19 23:20:57,229 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-07-19 23:20:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-07-19 23:20:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:20:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:20:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-07-19 23:20:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-07-19 23:20:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:20:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:20:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-07-19 23:20:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-07-19 23:20:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 23:20:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 23:20:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-19 23:20:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-19 23:20:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-07-19 23:20:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-07-19 23:20:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-19 23:20:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-19 23:20:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-19 23:20:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-19 23:20:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-07-19 23:20:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-07-19 23:20:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-07-19 23:20:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-07-19 23:20:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:20:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:20:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 23:20:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 23:20:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-07-19 23:20:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-07-19 23:20:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-07-19 23:20:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-07-19 23:20:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-19 23:20:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-19 23:20:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-07-19 23:20:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-07-19 23:20:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-19 23:20:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-19 23:20:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-19 23:20:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-19 23:20:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-07-19 23:20:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-07-19 23:20:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:20:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:20:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-07-19 23:20:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-07-19 23:20:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-07-19 23:20:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-07-19 23:20:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-07-19 23:20:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-07-19 23:20:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-07-19 23:20:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-07-19 23:20:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-07-19 23:20:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-07-19 23:20:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-07-19 23:20:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-07-19 23:20:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:20:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-07-19 23:20:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-07-19 23:20:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-19 23:20:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-19 23:20:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:20:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:20:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-07-19 23:20:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-07-19 23:20:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-07-19 23:20:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-07-19 23:20:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:20:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:20:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-19 23:20:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-19 23:20:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-07-19 23:20:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-07-19 23:20:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-07-19 23:20:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-07-19 23:20:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:20:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:20:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-19 23:20:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-19 23:20:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:20:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-07-19 23:20:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-07-19 23:20:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-19 23:20:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-19 23:20:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-19 23:20:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:20:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:20:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-07-19 23:20:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-07-19 23:20:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-07-19 23:20:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-07-19 23:20:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-19 23:20:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2022-07-19 23:20:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:20:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-07-19 23:20:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-07-19 23:20:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:20:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:20:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 23:20:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:20:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:20:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:20:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-19 23:20:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-07-19 23:20:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-07-19 23:20:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2022-07-19 23:20:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2022-07-19 23:20:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-19 23:20:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-19 23:20:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-07-19 23:20:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-07-19 23:20:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2022-07-19 23:20:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2022-07-19 23:20:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-19 23:20:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-19 23:20:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-07-19 23:20:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-07-19 23:20:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-07-19 23:20:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-07-19 23:20:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:20:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:20:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-07-19 23:20:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-07-19 23:20:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-19 23:20:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-19 23:20:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-07-19 23:20:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-07-19 23:20:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 23:20:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 23:20:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-07-19 23:20:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-07-19 23:20:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 23:20:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 23:20:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:20:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-19 23:20:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-19 23:20:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:20:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:20:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-19 23:20:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-19 23:20:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-07-19 23:20:57,256 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-07-19 23:20:58,096 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:20:58,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:21:05,631 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:21:05,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:21:05,658 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:21:05,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:21:05 BoogieIcfgContainer [2022-07-19 23:21:05,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:21:05,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:21:05,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:21:05,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:21:05,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:20:53" (1/3) ... [2022-07-19 23:21:05,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:21:05, skipping insertion in model container [2022-07-19 23:21:05,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:56" (2/3) ... [2022-07-19 23:21:05,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4948354d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:21:05, skipping insertion in model container [2022-07-19 23:21:05,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:21:05" (3/3) ... [2022-07-19 23:21:05,674 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2022-07-19 23:21:05,687 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:21:05,687 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:21:05,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:21:05,770 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@64c53255, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@542c5961 [2022-07-19 23:21:05,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:21:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2022-07-19 23:21:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 23:21:05,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:05,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:05,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1524047706, now seen corresponding path program 1 times [2022-07-19 23:21:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:05,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491390207] [2022-07-19 23:21:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:06,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:21:06,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:06,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491390207] [2022-07-19 23:21:06,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491390207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:06,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:06,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:21:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97214250] [2022-07-19 23:21:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:06,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:21:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:21:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:21:06,451 INFO L87 Difference]: Start difference. First operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:16,740 INFO L93 Difference]: Finished difference Result 5926 states and 8748 transitions. [2022-07-19 23:21:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:21:16,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-07-19 23:21:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:16,792 INFO L225 Difference]: With dead ends: 5926 [2022-07-19 23:21:16,792 INFO L226 Difference]: Without dead ends: 4084 [2022-07-19 23:21:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:16,813 INFO L413 NwaCegarLoop]: 2518 mSDtfsCounter, 5451 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5771 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 8315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:16,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5771 Valid, 4179 Invalid, 8315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 23:21:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-07-19 23:21:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3549. [2022-07-19 23:21:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2469 states have (on average 1.296881328473066) internal successors, (3202), 2526 states have internal predecessors, (3202), 839 states have call successors, (839), 220 states have call predecessors, (839), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-19 23:21:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4983 transitions. [2022-07-19 23:21:17,131 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4983 transitions. Word has length 32 [2022-07-19 23:21:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:17,132 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 4983 transitions. [2022-07-19 23:21:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4983 transitions. [2022-07-19 23:21:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 23:21:17,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:17,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:21:17,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1075164, now seen corresponding path program 1 times [2022-07-19 23:21:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:17,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594718581] [2022-07-19 23:21:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:21:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594718581] [2022-07-19 23:21:17,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594718581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:17,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:17,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:21:17,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120826894] [2022-07-19 23:21:17,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:17,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:21:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:21:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:21:17,474 INFO L87 Difference]: Start difference. First operand 3549 states and 4983 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:24,380 INFO L93 Difference]: Finished difference Result 4152 states and 5960 transitions. [2022-07-19 23:21:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:21:24,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-19 23:21:24,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:24,409 INFO L225 Difference]: With dead ends: 4152 [2022-07-19 23:21:24,410 INFO L226 Difference]: Without dead ends: 4149 [2022-07-19 23:21:24,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:24,414 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 3974 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 2116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 4573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2116 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:24,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 3024 Invalid, 4573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2116 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-19 23:21:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2022-07-19 23:21:24,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3548. [2022-07-19 23:21:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2469 states have (on average 1.2964763061968407) internal successors, (3201), 2525 states have internal predecessors, (3201), 838 states have call successors, (838), 220 states have call predecessors, (838), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-19 23:21:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4981 transitions. [2022-07-19 23:21:24,579 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4981 transitions. Word has length 33 [2022-07-19 23:21:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:24,579 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4981 transitions. [2022-07-19 23:21:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4981 transitions. [2022-07-19 23:21:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 23:21:24,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:24,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:24,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:21:24,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash -35239011, now seen corresponding path program 1 times [2022-07-19 23:21:24,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:24,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352058745] [2022-07-19 23:21:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:21:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352058745] [2022-07-19 23:21:24,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352058745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:24,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:24,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:21:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6794649] [2022-07-19 23:21:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:24,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:21:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:21:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:21:24,838 INFO L87 Difference]: Start difference. First operand 3548 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:30,835 INFO L93 Difference]: Finished difference Result 4151 states and 5958 transitions. [2022-07-19 23:21:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:21:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-07-19 23:21:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:30,864 INFO L225 Difference]: With dead ends: 4151 [2022-07-19 23:21:30,865 INFO L226 Difference]: Without dead ends: 4148 [2022-07-19 23:21:30,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:30,871 INFO L413 NwaCegarLoop]: 2110 mSDtfsCounter, 3965 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 2107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 4583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2107 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:30,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 3022 Invalid, 4583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2107 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 23:21:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-07-19 23:21:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3547. [2022-07-19 23:21:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2469 states have (on average 1.2960712839206157) internal successors, (3200), 2524 states have internal predecessors, (3200), 837 states have call successors, (837), 220 states have call predecessors, (837), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2022-07-19 23:21:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4979 transitions. [2022-07-19 23:21:31,082 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4979 transitions. Word has length 34 [2022-07-19 23:21:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:31,082 INFO L495 AbstractCegarLoop]: Abstraction has 3547 states and 4979 transitions. [2022-07-19 23:21:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4979 transitions. [2022-07-19 23:21:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 23:21:31,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:31,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:31,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:21:31,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1094313401, now seen corresponding path program 1 times [2022-07-19 23:21:31,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128937765] [2022-07-19 23:21:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:21:31,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:31,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128937765] [2022-07-19 23:21:31,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128937765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:31,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:31,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:21:31,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201552463] [2022-07-19 23:21:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:31,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:21:31,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:21:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:21:31,343 INFO L87 Difference]: Start difference. First operand 3547 states and 4979 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:36,955 INFO L93 Difference]: Finished difference Result 4288 states and 6099 transitions. [2022-07-19 23:21:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:21:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-19 23:21:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:36,982 INFO L225 Difference]: With dead ends: 4288 [2022-07-19 23:21:36,983 INFO L226 Difference]: Without dead ends: 4269 [2022-07-19 23:21:36,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:36,989 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 3878 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 2098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2098 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:36,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 3156 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2098 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-19 23:21:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-07-19 23:21:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3660. [2022-07-19 23:21:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2557 states have (on average 1.2901838091513493) internal successors, (3299), 2609 states have internal predecessors, (3299), 840 states have call successors, (840), 242 states have call predecessors, (840), 262 states have return successors, (948), 827 states have call predecessors, (948), 829 states have call successors, (948) [2022-07-19 23:21:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5087 transitions. [2022-07-19 23:21:37,201 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5087 transitions. Word has length 35 [2022-07-19 23:21:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:37,203 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5087 transitions. [2022-07-19 23:21:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 23:21:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5087 transitions. [2022-07-19 23:21:37,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 23:21:37,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:37,211 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:21:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:21:37,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash 515000665, now seen corresponding path program 1 times [2022-07-19 23:21:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533202292] [2022-07-19 23:21:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:21:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:21:37,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533202292] [2022-07-19 23:21:37,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533202292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:37,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:37,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:21:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16731634] [2022-07-19 23:21:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:37,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:21:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:21:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:21:37,557 INFO L87 Difference]: Start difference. First operand 3660 states and 5087 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 23:21:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:45,444 INFO L93 Difference]: Finished difference Result 8494 states and 12125 transitions. [2022-07-19 23:21:45,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:21:45,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-07-19 23:21:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:45,473 INFO L225 Difference]: With dead ends: 8494 [2022-07-19 23:21:45,474 INFO L226 Difference]: Without dead ends: 4992 [2022-07-19 23:21:45,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:21:45,493 INFO L413 NwaCegarLoop]: 2299 mSDtfsCounter, 3252 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 6017 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3482 SdHoareTripleChecker+Valid, 5577 SdHoareTripleChecker+Invalid, 8447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 6017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:45,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3482 Valid, 5577 Invalid, 8447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2430 Valid, 6017 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-19 23:21:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2022-07-19 23:21:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4284. [2022-07-19 23:21:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3032 states have (on average 1.3007915567282322) internal successors, (3944), 3075 states have internal predecessors, (3944), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-19 23:21:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6052 transitions. [2022-07-19 23:21:45,699 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6052 transitions. Word has length 58 [2022-07-19 23:21:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:45,699 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6052 transitions. [2022-07-19 23:21:45,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 23:21:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6052 transitions. [2022-07-19 23:21:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 23:21:45,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:45,702 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:21:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:21:45,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1001937349, now seen corresponding path program 1 times [2022-07-19 23:21:45,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30090824] [2022-07-19 23:21:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:21:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:21:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 23:21:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 23:21:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:21:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30090824] [2022-07-19 23:21:45,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30090824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:45,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:45,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:21:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633238850] [2022-07-19 23:21:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:21:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:21:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:21:45,962 INFO L87 Difference]: Start difference. First operand 4284 states and 6052 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:21:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:51,978 INFO L93 Difference]: Finished difference Result 9259 states and 13286 transitions. [2022-07-19 23:21:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:21:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-07-19 23:21:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:52,010 INFO L225 Difference]: With dead ends: 9259 [2022-07-19 23:21:52,011 INFO L226 Difference]: Without dead ends: 4994 [2022-07-19 23:21:52,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:21:52,036 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 2234 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 4705 mSolverCounterSat, 1559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 6264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1559 IncrementalHoareTripleChecker+Valid, 4705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:52,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2463 Valid, 4908 Invalid, 6264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1559 Valid, 4705 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 23:21:52,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2022-07-19 23:21:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4285. [2022-07-19 23:21:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3033 states have (on average 1.3006923837784372) internal successors, (3945), 3076 states have internal predecessors, (3945), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-19 23:21:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6053 transitions. [2022-07-19 23:21:52,275 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6053 transitions. Word has length 67 [2022-07-19 23:21:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:52,276 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6053 transitions. [2022-07-19 23:21:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:21:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6053 transitions. [2022-07-19 23:21:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 23:21:52,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:52,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:21:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:21:52,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1602163945, now seen corresponding path program 1 times [2022-07-19 23:21:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132857296] [2022-07-19 23:21:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:21:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:21:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:21:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:21:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:21:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:21:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:21:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:21:52,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:52,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132857296] [2022-07-19 23:21:52,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132857296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:21:52,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799918493] [2022-07-19 23:21:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:52,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:21:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:21:52,611 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) [2022-07-19 23:21:52,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:21:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:53,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:21:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:21:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:21:53,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:21:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:21:53,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799918493] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:21:53,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:21:53,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-19 23:21:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122978811] [2022-07-19 23:21:53,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:21:53,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:21:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:21:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:21:53,622 INFO L87 Difference]: Start difference. First operand 4285 states and 6053 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:01,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:01,047 INFO L93 Difference]: Finished difference Result 9264 states and 13293 transitions. [2022-07-19 23:22:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:22:01,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2022-07-19 23:22:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:01,071 INFO L225 Difference]: With dead ends: 9264 [2022-07-19 23:22:01,071 INFO L226 Difference]: Without dead ends: 4999 [2022-07-19 23:22:01,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:22:01,094 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 2240 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 6499 mSolverCounterSat, 1565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 5830 SdHoareTripleChecker+Invalid, 8064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1565 IncrementalHoareTripleChecker+Valid, 6499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:01,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 5830 Invalid, 8064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1565 Valid, 6499 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-19 23:22:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2022-07-19 23:22:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4291. [2022-07-19 23:22:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 3039 states have (on average 1.3000987166831195) internal successors, (3951), 3082 states have internal predecessors, (3951), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2022-07-19 23:22:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 6059 transitions. [2022-07-19 23:22:01,313 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 6059 transitions. Word has length 69 [2022-07-19 23:22:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:01,314 INFO L495 AbstractCegarLoop]: Abstraction has 4291 states and 6059 transitions. [2022-07-19 23:22:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 6059 transitions. [2022-07-19 23:22:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 23:22:01,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:01,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-19 23:22:01,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:01,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:01,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 526315605, now seen corresponding path program 2 times [2022-07-19 23:22:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:01,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282891463] [2022-07-19 23:22:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:22:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:22:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:22:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:22:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 23:22:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:01,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282891463] [2022-07-19 23:22:01,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282891463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:22:01,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:22:01,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:22:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651355774] [2022-07-19 23:22:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:22:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:22:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:22:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:22:01,935 INFO L87 Difference]: Start difference. First operand 4291 states and 6059 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:22:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:11,890 INFO L93 Difference]: Finished difference Result 9329 states and 13474 transitions. [2022-07-19 23:22:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 23:22:11,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-07-19 23:22:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:11,913 INFO L225 Difference]: With dead ends: 9329 [2022-07-19 23:22:11,913 INFO L226 Difference]: Without dead ends: 5205 [2022-07-19 23:22:11,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:22:11,936 INFO L413 NwaCegarLoop]: 3547 mSDtfsCounter, 6043 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 6136 mSolverCounterSat, 4456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6363 SdHoareTripleChecker+Valid, 6304 SdHoareTripleChecker+Invalid, 10592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4456 IncrementalHoareTripleChecker+Valid, 6136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:11,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6363 Valid, 6304 Invalid, 10592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4456 Valid, 6136 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-19 23:22:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-07-19 23:22:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 4212. [2022-07-19 23:22:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 2979 states have (on average 1.3037932192010742) internal successors, (3884), 3032 states have internal predecessors, (3884), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-19 23:22:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5893 transitions. [2022-07-19 23:22:12,189 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5893 transitions. Word has length 75 [2022-07-19 23:22:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:12,190 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5893 transitions. [2022-07-19 23:22:12,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:22:12,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5893 transitions. [2022-07-19 23:22:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 23:22:12,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:12,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-19 23:22:12,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:22:12,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1029372965, now seen corresponding path program 1 times [2022-07-19 23:22:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:12,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146515393] [2022-07-19 23:22:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:22:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 23:22:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:22:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:22:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:12,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146515393] [2022-07-19 23:22:12,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146515393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:12,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674701401] [2022-07-19 23:22:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:12,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:12,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:12,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:12,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:22:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 23:22:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:22:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:13,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:22:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:13,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674701401] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:22:13,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:22:13,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-19 23:22:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119407505] [2022-07-19 23:22:13,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:22:13,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 23:22:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 23:22:13,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-07-19 23:22:13,371 INFO L87 Difference]: Start difference. First operand 4212 states and 5893 transitions. Second operand has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:23,520 INFO L93 Difference]: Finished difference Result 9398 states and 13384 transitions. [2022-07-19 23:22:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 23:22:23,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-07-19 23:22:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:23,559 INFO L225 Difference]: With dead ends: 9398 [2022-07-19 23:22:23,559 INFO L226 Difference]: Without dead ends: 5212 [2022-07-19 23:22:23,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-07-19 23:22:23,579 INFO L413 NwaCegarLoop]: 2299 mSDtfsCounter, 3261 mSDsluCounter, 6073 mSDsCounter, 0 mSdLazyCounter, 11471 mSolverCounterSat, 2437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3486 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 13908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2437 IncrementalHoareTripleChecker+Valid, 11471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:23,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3486 Valid, 8372 Invalid, 13908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2437 Valid, 11471 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 23:22:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2022-07-19 23:22:23,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4224. [2022-07-19 23:22:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 2991 states have (on average 1.3025743898361752) internal successors, (3896), 3044 states have internal predecessors, (3896), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-19 23:22:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 5905 transitions. [2022-07-19 23:22:23,827 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 5905 transitions. Word has length 79 [2022-07-19 23:22:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:23,828 INFO L495 AbstractCegarLoop]: Abstraction has 4224 states and 5905 transitions. [2022-07-19 23:22:23,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 13 states have internal predecessors, (79), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 5905 transitions. [2022-07-19 23:22:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 23:22:23,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:23,835 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 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] [2022-07-19 23:22:23,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:24,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 23:22:24,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:24,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash -497810435, now seen corresponding path program 2 times [2022-07-19 23:22:24,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:24,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767515726] [2022-07-19 23:22:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:22:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:22:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:22:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:22:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:24,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:24,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767515726] [2022-07-19 23:22:24,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767515726] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:24,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212277046] [2022-07-19 23:22:24,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:22:24,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:24,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:24,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:24,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:22:25,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:22:25,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:22:25,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 23:22:25,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:22:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:25,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:22:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:25,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212277046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:22:25,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:22:25,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 28 [2022-07-19 23:22:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132568483] [2022-07-19 23:22:25,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:22:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 23:22:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 23:22:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2022-07-19 23:22:25,685 INFO L87 Difference]: Start difference. First operand 4224 states and 5905 transitions. Second operand has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:29,497 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 [] [2022-07-19 23:22:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:37,198 INFO L93 Difference]: Finished difference Result 9422 states and 13414 transitions. [2022-07-19 23:22:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 23:22:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2022-07-19 23:22:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:37,220 INFO L225 Difference]: With dead ends: 9422 [2022-07-19 23:22:37,220 INFO L226 Difference]: Without dead ends: 5236 [2022-07-19 23:22:37,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2022-07-19 23:22:37,236 INFO L413 NwaCegarLoop]: 2305 mSDtfsCounter, 3286 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 7891 mSolverCounterSat, 2445 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 10337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2445 IncrementalHoareTripleChecker+Valid, 7891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:37,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 6527 Invalid, 10337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2445 Valid, 7891 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-07-19 23:22:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2022-07-19 23:22:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 4248. [2022-07-19 23:22:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 3015 states have (on average 1.3001658374792704) internal successors, (3920), 3068 states have internal predecessors, (3920), 969 states have call successors, (969), 241 states have call predecessors, (969), 263 states have return successors, (1040), 957 states have call predecessors, (1040), 948 states have call successors, (1040) [2022-07-19 23:22:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 5929 transitions. [2022-07-19 23:22:37,511 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 5929 transitions. Word has length 91 [2022-07-19 23:22:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:37,513 INFO L495 AbstractCegarLoop]: Abstraction has 4248 states and 5929 transitions. [2022-07-19 23:22:37,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 25 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:22:37,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 5929 transitions. [2022-07-19 23:22:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 23:22:37,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:37,516 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 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] [2022-07-19 23:22:37,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:37,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:37,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash 308086701, now seen corresponding path program 3 times [2022-07-19 23:22:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:37,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84922291] [2022-07-19 23:22:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:22:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:22:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 23:22:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:22:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:38,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:38,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84922291] [2022-07-19 23:22:38,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84922291] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:38,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972047205] [2022-07-19 23:22:38,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:22:38,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:38,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:38,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:38,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:22:39,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 23:22:39,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:22:39,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:22:39,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:22:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-07-19 23:22:39,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:22:39,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972047205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:22:39,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:22:39,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [28] total 31 [2022-07-19 23:22:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390244312] [2022-07-19 23:22:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:22:39,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:22:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:22:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=617, Unknown=0, NotChecked=0, Total=930 [2022-07-19 23:22:39,279 INFO L87 Difference]: Start difference. First operand 4248 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 23:22:41,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:41,567 INFO L93 Difference]: Finished difference Result 8295 states and 11598 transitions. [2022-07-19 23:22:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:22:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 115 [2022-07-19 23:22:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:41,585 INFO L225 Difference]: With dead ends: 8295 [2022-07-19 23:22:41,585 INFO L226 Difference]: Without dead ends: 4232 [2022-07-19 23:22:41,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=733, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 23:22:41,600 INFO L413 NwaCegarLoop]: 2547 mSDtfsCounter, 4 mSDsluCounter, 7619 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10166 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:41,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10166 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 23:22:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-07-19 23:22:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4232. [2022-07-19 23:22:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 3006 states have (on average 1.2997338656021291) internal successors, (3907), 3057 states have internal predecessors, (3907), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-19 23:22:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 5908 transitions. [2022-07-19 23:22:41,871 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 5908 transitions. Word has length 115 [2022-07-19 23:22:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 5908 transitions. [2022-07-19 23:22:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 23:22:41,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 5908 transitions. [2022-07-19 23:22:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 23:22:41,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:41,875 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:22:41,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:42,100 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 773365027, now seen corresponding path program 1 times [2022-07-19 23:22:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578889402] [2022-07-19 23:22:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:22:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:22:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:22:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:22:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:22:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:22:42,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578889402] [2022-07-19 23:22:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578889402] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827837871] [2022-07-19 23:22:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:42,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:42,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:22:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:43,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 4277 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 23:22:43,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:22:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:22:44,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:22:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:22:44,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827837871] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:22:44,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:22:44,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2022-07-19 23:22:44,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045549493] [2022-07-19 23:22:44,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:22:44,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 23:22:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 23:22:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2022-07-19 23:22:44,836 INFO L87 Difference]: Start difference. First operand 4232 states and 5908 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:22:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:55,705 INFO L93 Difference]: Finished difference Result 9438 states and 13432 transitions. [2022-07-19 23:22:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-19 23:22:55,706 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2022-07-19 23:22:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:55,727 INFO L225 Difference]: With dead ends: 9438 [2022-07-19 23:22:55,727 INFO L226 Difference]: Without dead ends: 5268 [2022-07-19 23:22:55,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1193, Invalid=1669, Unknown=0, NotChecked=0, Total=2862 [2022-07-19 23:22:55,742 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 3322 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 9709 mSolverCounterSat, 2444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 7334 SdHoareTripleChecker+Invalid, 12153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2444 IncrementalHoareTripleChecker+Valid, 9709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:55,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3550 Valid, 7334 Invalid, 12153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2444 Valid, 9709 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-07-19 23:22:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-07-19 23:22:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4280. [2022-07-19 23:22:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3054 states have (on average 1.2950229207596595) internal successors, (3955), 3105 states have internal predecessors, (3955), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-19 23:22:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5956 transitions. [2022-07-19 23:22:56,022 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5956 transitions. Word has length 139 [2022-07-19 23:22:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:56,022 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5956 transitions. [2022-07-19 23:22:56,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 49 states have internal predecessors, (178), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:22:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5956 transitions. [2022-07-19 23:22:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 23:22:56,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:56,027 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:22:56,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:56,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 23:22:56,256 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1584813187, now seen corresponding path program 2 times [2022-07-19 23:22:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117106209] [2022-07-19 23:22:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:56,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:22:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:22:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:22:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:22:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 23:22:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 23:22:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 23:22:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:22:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:22:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:22:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117106209] [2022-07-19 23:22:58,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117106209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457507544] [2022-07-19 23:22:58,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:22:58,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:58,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:58,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:22:59,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:22:59,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:22:59,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 4637 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 23:22:59,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:23:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 6 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:23:00,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:23:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:23:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457507544] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:23:04,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:23:04,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 49, 49] total 100 [2022-07-19 23:23:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101531296] [2022-07-19 23:23:04,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:23:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-07-19 23:23:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:23:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-07-19 23:23:04,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4663, Invalid=5237, Unknown=0, NotChecked=0, Total=9900 [2022-07-19 23:23:04,273 INFO L87 Difference]: Start difference. First operand 4280 states and 5956 transitions. Second operand has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:23:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:23:16,412 INFO L93 Difference]: Finished difference Result 9534 states and 13552 transitions. [2022-07-19 23:23:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-07-19 23:23:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 187 [2022-07-19 23:23:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:23:16,446 INFO L225 Difference]: With dead ends: 9534 [2022-07-19 23:23:16,446 INFO L226 Difference]: Without dead ends: 5364 [2022-07-19 23:23:16,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4673, Invalid=5629, Unknown=0, NotChecked=0, Total=10302 [2022-07-19 23:23:16,471 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 3392 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 6223 mSolverCounterSat, 2467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 8690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2467 IncrementalHoareTripleChecker+Valid, 6223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:23:16,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3617 Valid, 5509 Invalid, 8690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2467 Valid, 6223 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-19 23:23:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-19 23:23:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-19 23:23:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.286031746031746) internal successors, (4051), 3201 states have internal predecessors, (4051), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-19 23:23:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6052 transitions. [2022-07-19 23:23:16,791 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6052 transitions. Word has length 187 [2022-07-19 23:23:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:23:16,792 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6052 transitions. [2022-07-19 23:23:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.74) internal successors, (274), 97 states have internal predecessors, (274), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:23:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6052 transitions. [2022-07-19 23:23:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-19 23:23:16,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:23:16,798 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:23:16,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 23:23:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:23:17,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:23:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:23:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1597963453, now seen corresponding path program 3 times [2022-07-19 23:23:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:23:17,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273985682] [2022-07-19 23:23:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:17,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:23:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:23:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:23:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:23:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:23:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:23:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-19 23:23:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-19 23:23:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-19 23:23:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-19 23:23:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:23:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:23:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273985682] [2022-07-19 23:23:23,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273985682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:23:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188914690] [2022-07-19 23:23:23,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:23:23,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:23:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:23:23,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:23:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 23:23:24,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 23:23:24,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:23:24,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 23:23:24,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:23:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8845 trivial. 0 not checked. [2022-07-19 23:23:25,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:23:25,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188914690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:23:25,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:23:25,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [100] total 103 [2022-07-19 23:23:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624781171] [2022-07-19 23:23:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:23:25,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:23:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:23:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:23:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4669, Invalid=5837, Unknown=0, NotChecked=0, Total=10506 [2022-07-19 23:23:25,046 INFO L87 Difference]: Start difference. First operand 4376 states and 6052 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 23:23:27,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:23:27,483 INFO L93 Difference]: Finished difference Result 8426 states and 11724 transitions. [2022-07-19 23:23:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:23:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 283 [2022-07-19 23:23:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:23:27,510 INFO L225 Difference]: With dead ends: 8426 [2022-07-19 23:23:27,511 INFO L226 Difference]: Without dead ends: 4376 [2022-07-19 23:23:27,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4679, Invalid=6241, Unknown=0, NotChecked=0, Total=10920 [2022-07-19 23:23:27,532 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 3 mSDsluCounter, 7583 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:23:27,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10115 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 23:23:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2022-07-19 23:23:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4376. [2022-07-19 23:23:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2857142857142858) internal successors, (4050), 3201 states have internal predecessors, (4050), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-19 23:23:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6051 transitions. [2022-07-19 23:23:27,749 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6051 transitions. Word has length 283 [2022-07-19 23:23:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:23:27,750 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6051 transitions. [2022-07-19 23:23:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 23:23:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6051 transitions. [2022-07-19 23:23:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-19 23:23:27,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:23:27,756 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:23:27,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:23:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:23:27,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:23:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:23:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1558495655, now seen corresponding path program 1 times [2022-07-19 23:23:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:23:27,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867583255] [2022-07-19 23:23:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:23:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:23:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:23:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:23:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:23:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:23:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-19 23:23:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-19 23:23:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-19 23:23:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-19 23:23:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-19 23:23:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8848 trivial. 0 not checked. [2022-07-19 23:23:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:23:28,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867583255] [2022-07-19 23:23:28,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867583255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:23:28,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:23:28,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:23:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477316575] [2022-07-19 23:23:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:23:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:23:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:23:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:23:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:23:28,749 INFO L87 Difference]: Start difference. First operand 4376 states and 6051 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:23:30,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:36,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:38,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:50,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:23:50,843 INFO L93 Difference]: Finished difference Result 9414 states and 13334 transitions. [2022-07-19 23:23:50,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:23:50,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 291 [2022-07-19 23:23:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:23:50,872 INFO L225 Difference]: With dead ends: 9414 [2022-07-19 23:23:50,872 INFO L226 Difference]: Without dead ends: 5364 [2022-07-19 23:23:50,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-19 23:23:50,894 INFO L413 NwaCegarLoop]: 2274 mSDtfsCounter, 3262 mSDsluCounter, 5949 mSDsCounter, 0 mSdLazyCounter, 11406 mSolverCounterSat, 2409 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 8223 SdHoareTripleChecker+Invalid, 13818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2409 IncrementalHoareTripleChecker+Valid, 11406 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:23:50,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 8223 Invalid, 13818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2409 Valid, 11406 Invalid, 3 Unknown, 0 Unchecked, 21.4s Time] [2022-07-19 23:23:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2022-07-19 23:23:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4376. [2022-07-19 23:23:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 3150 states have (on average 1.2853968253968253) internal successors, (4049), 3201 states have internal predecessors, (4049), 965 states have call successors, (965), 238 states have call predecessors, (965), 260 states have return successors, (1036), 953 states have call predecessors, (1036), 944 states have call successors, (1036) [2022-07-19 23:23:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6050 transitions. [2022-07-19 23:23:51,154 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6050 transitions. Word has length 291 [2022-07-19 23:23:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:23:51,155 INFO L495 AbstractCegarLoop]: Abstraction has 4376 states and 6050 transitions. [2022-07-19 23:23:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 23:23:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6050 transitions. [2022-07-19 23:23:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-19 23:23:51,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:23:51,162 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:23:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 23:23:51,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:23:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:23:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1462228516, now seen corresponding path program 1 times [2022-07-19 23:23:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:23:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978864714] [2022-07-19 23:23:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:23:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:23:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:23:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 23:23:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 23:23:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:23:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-19 23:23:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-19 23:23:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-19 23:23:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-19 23:23:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-19 23:23:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:23:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:23:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978864714] [2022-07-19 23:23:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978864714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:23:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026148645] [2022-07-19 23:23:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:57,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:23:57,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:23:57,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:23:57,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 23:23:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 5505 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-19 23:23:59,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:23:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 6 proven. 8836 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 23:23:59,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:24:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:24:17,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026148645] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:24:17,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:24:17,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 97, 97] total 196 [2022-07-19 23:24:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752944035] [2022-07-19 23:24:17,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:24:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2022-07-19 23:24:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:24:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2022-07-19 23:24:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18535, Invalid=19685, Unknown=0, NotChecked=0, Total=38220 [2022-07-19 23:24:17,304 INFO L87 Difference]: Start difference. First operand 4376 states and 6050 transitions. Second operand has 196 states, 196 states have (on average 2.413265306122449) internal successors, (473), 193 states have internal predecessors, (473), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)