./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.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 cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 16:08:26,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 16:08:26,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 16:08:26,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 16:08:26,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 16:08:26,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 16:08:26,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 16:08:27,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 16:08:27,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 16:08:27,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 16:08:27,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 16:08:27,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 16:08:27,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 16:08:27,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 16:08:27,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 16:08:27,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 16:08:27,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 16:08:27,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 16:08:27,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 16:08:27,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 16:08:27,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 16:08:27,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 16:08:27,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 16:08:27,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 16:08:27,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 16:08:27,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 16:08:27,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 16:08:27,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 16:08:27,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 16:08:27,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 16:08:27,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 16:08:27,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 16:08:27,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 16:08:27,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 16:08:27,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 16:08:27,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 16:08:27,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 16:08:27,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 16:08:27,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 16:08:27,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 16:08:27,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 16:08:27,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 16:08:27,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 16:08:27,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 16:08:27,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 16:08:27,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 16:08:27,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 16:08:27,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 16:08:27,068 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 16:08:27,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 16:08:27,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 16:08:27,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 16:08:27,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 16:08:27,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:08:27,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 16:08:27,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 16:08:27,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 16:08:27,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 16:08:27,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 16:08:27,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 16:08:27,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 16:08:27,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2021-11-02 16:08:27,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 16:08:27,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 16:08:27,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 16:08:27,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 16:08:27,271 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 16:08:27,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-02 16:08:27,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2675b7f/78e4bc83623e4681960bffd5eeb39ef9/FLAGa76ef2c14 [2021-11-02 16:08:27,901 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 16:08:27,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-02 16:08:27,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2675b7f/78e4bc83623e4681960bffd5eeb39ef9/FLAGa76ef2c14 [2021-11-02 16:08:28,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2675b7f/78e4bc83623e4681960bffd5eeb39ef9 [2021-11-02 16:08:28,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 16:08:28,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 16:08:28,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 16:08:28,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 16:08:28,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 16:08:28,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:08:28" (1/1) ... [2021-11-02 16:08:28,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a13ebcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:28, skipping insertion in model container [2021-11-02 16:08:28,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:08:28" (1/1) ... [2021-11-02 16:08:28,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 16:08:28,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 16:08:29,093 WARN L228 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-02 16:08:29,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:08:29,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 16:08:29,286 WARN L228 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-02 16:08:29,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:08:29,330 INFO L208 MainTranslator]: Completed translation [2021-11-02 16:08:29,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29 WrapperNode [2021-11-02 16:08:29,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 16:08:29,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 16:08:29,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 16:08:29,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 16:08:29,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:29,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:30,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 16:08:30,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 16:08:30,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 16:08:30,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 16:08:30,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:30,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:30,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:30,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:31,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:31,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:31,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:32,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 16:08:32,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 16:08:32,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 16:08:32,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 16:08:32,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (1/1) ... [2021-11-02 16:08:32,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:08:32,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 16:08:32,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 16:08:32,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 16:08:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 16:08:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 16:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 16:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 16:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-02 16:08:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-02 16:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-02 16:08:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-02 16:08:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 16:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-02 16:08:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-02 16:08:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-02 16:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 16:08:32,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 16:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 16:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 16:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 16:08:32,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 16:09:01,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 16:09:01,441 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2021-11-02 16:09:01,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:09:01 BoogieIcfgContainer [2021-11-02 16:09:01,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 16:09:01,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 16:09:01,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 16:09:01,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 16:09:01,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 04:08:28" (1/3) ... [2021-11-02 16:09:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123f3e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:09:01, skipping insertion in model container [2021-11-02 16:09:01,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:29" (2/3) ... [2021-11-02 16:09:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123f3e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:09:01, skipping insertion in model container [2021-11-02 16:09:01,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:09:01" (3/3) ... [2021-11-02 16:09:01,460 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-02 16:09:01,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 16:09:01,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 16:09:01,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 16:09:01,548 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 16:09:01,549 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 16:09:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 16:09:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 16:09:01,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:09:01,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:09:01,675 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:09:01,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:09:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2021-11-02 16:09:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:09:01,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083243267] [2021-11-02 16:09:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:09:01,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:09:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:09:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:09:02,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:09:02,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083243267] [2021-11-02 16:09:02,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083243267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:09:02,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:09:02,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:09:02,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341965218] [2021-11-02 16:09:02,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:09:02,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:09:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:09:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:02,246 INFO L87 Difference]: Start difference. First operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:09:04,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:09:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:09:36,806 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2021-11-02 16:09:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:09:36,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 16:09:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:09:36,907 INFO L225 Difference]: With dead ends: 29868 [2021-11-02 16:09:36,907 INFO L226 Difference]: Without dead ends: 18529 [2021-11-02 16:09:36,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:36,972 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 12713 mSDsluCounter, 12630 mSDsCounter, 0 mSdLazyCounter, 25318 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29196.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12713 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.08ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33553.69ms IncrementalHoareTripleChecker+Time [2021-11-02 16:09:36,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12713 Valid, 52 Invalid, 25331 Unknown, 0 Unchecked, 62.08ms Time], IncrementalHoareTripleChecker [12 Valid, 25318 Invalid, 1 Unknown, 0 Unchecked, 33553.69ms Time] [2021-11-02 16:09:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2021-11-02 16:09:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2021-11-02 16:09:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18479 states have (on average 1.3693381676497647) internal successors, (25304), 18490 states have internal predecessors, (25304), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 16:09:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25344 transitions. [2021-11-02 16:09:37,513 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25344 transitions. Word has length 8 [2021-11-02 16:09:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:09:37,514 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 25344 transitions. [2021-11-02 16:09:37,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:09:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25344 transitions. [2021-11-02 16:09:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 16:09:37,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:09:37,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:09:37,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 16:09:37,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:09:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:09:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2021-11-02 16:09:37,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:09:37,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906084856] [2021-11-02 16:09:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:09:37,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:09:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:09:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:09:37,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:09:37,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906084856] [2021-11-02 16:09:37,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906084856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:09:37,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:09:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:09:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331656714] [2021-11-02 16:09:37,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:09:37,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:09:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:09:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:37,690 INFO L87 Difference]: Start difference. First operand 18523 states and 25344 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:09:39,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:10:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:10:22,858 INFO L93 Difference]: Finished difference Result 46242 states and 63288 transitions. [2021-11-02 16:10:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:10:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 16:10:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:10:22,997 INFO L225 Difference]: With dead ends: 46242 [2021-11-02 16:10:22,997 INFO L226 Difference]: Without dead ends: 37009 [2021-11-02 16:10:23,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:10:23,025 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12700 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 25360 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38192.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12700 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.40ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43854.05ms IncrementalHoareTripleChecker+Time [2021-11-02 16:10:23,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12700 Valid, 50 Invalid, 25369 Unknown, 0 Unchecked, 60.40ms Time], IncrementalHoareTripleChecker [8 Valid, 25360 Invalid, 1 Unknown, 0 Unchecked, 43854.05ms Time] [2021-11-02 16:10:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2021-11-02 16:10:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2021-11-02 16:10:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27787 states, 27728 states have (on average 1.3692296595499134) internal successors, (37966), 27738 states have internal predecessors, (37966), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 16:10:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38026 transitions. [2021-11-02 16:10:23,657 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38026 transitions. Word has length 9 [2021-11-02 16:10:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:10:23,657 INFO L470 AbstractCegarLoop]: Abstraction has 27787 states and 38026 transitions. [2021-11-02 16:10:23,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:10:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38026 transitions. [2021-11-02 16:10:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 16:10:23,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:10:23,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:10:23,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 16:10:23,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:10:23,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:10:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2021-11-02 16:10:23,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:10:23,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411064397] [2021-11-02 16:10:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:10:23,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:10:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:10:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:10:23,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:10:23,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411064397] [2021-11-02 16:10:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411064397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:10:23,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:10:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:10:23,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564675315] [2021-11-02 16:10:23,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:10:23,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:10:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:10:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:10:23,824 INFO L87 Difference]: Start difference. First operand 27787 states and 38026 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:10:25,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:11:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:11:14,543 INFO L93 Difference]: Finished difference Result 64742 states and 88619 transitions. [2021-11-02 16:11:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:11:14,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-02 16:11:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:11:14,714 INFO L225 Difference]: With dead ends: 64742 [2021-11-02 16:11:14,714 INFO L226 Difference]: Without dead ends: 55505 [2021-11-02 16:11:14,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:11:14,771 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12691 mSDsluCounter, 12665 mSDsCounter, 0 mSdLazyCounter, 25344 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42333.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12691 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49170.62ms IncrementalHoareTripleChecker+Time [2021-11-02 16:11:14,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12691 Valid, 50 Invalid, 25351 Unknown, 0 Unchecked, 53.08ms Time], IncrementalHoareTripleChecker [6 Valid, 25344 Invalid, 1 Unknown, 0 Unchecked, 49170.62ms Time] [2021-11-02 16:11:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2021-11-02 16:11:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2021-11-02 16:11:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27786 states have (on average 1.3688548189735839) internal successors, (38035), 27795 states have internal predecessors, (38035), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 16:11:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38095 transitions. [2021-11-02 16:11:15,523 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38095 transitions. Word has length 18 [2021-11-02 16:11:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:11:15,524 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38095 transitions. [2021-11-02 16:11:15,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:11:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38095 transitions. [2021-11-02 16:11:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 16:11:15,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:11:15,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:11:15,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 16:11:15,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:11:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:11:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2021-11-02 16:11:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:11:15,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255880432] [2021-11-02 16:11:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:11:15,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:11:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:11:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:11:16,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:11:16,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255880432] [2021-11-02 16:11:16,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255880432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:11:16,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:11:16,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 16:11:16,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957949068] [2021-11-02 16:11:16,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 16:11:16,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:11:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 16:11:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 16:11:16,402 INFO L87 Difference]: Start difference. First operand 27844 states and 38095 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:11:18,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:13:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:13:50,835 INFO L93 Difference]: Finished difference Result 92276 states and 125801 transitions. [2021-11-02 16:13:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 16:13:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-02 16:13:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:13:50,985 INFO L225 Difference]: With dead ends: 92276 [2021-11-02 16:13:50,985 INFO L226 Difference]: Without dead ends: 64534 [2021-11-02 16:13:51,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 180.26ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-02 16:13:51,040 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39761 mSDsluCounter, 105386 mSDsCounter, 0 mSdLazyCounter, 122387 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128500.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39763 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 122428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 409.66ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150743.64ms IncrementalHoareTripleChecker+Time [2021-11-02 16:13:51,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39763 Valid, 177 Invalid, 122428 Unknown, 0 Unchecked, 409.66ms Time], IncrementalHoareTripleChecker [40 Valid, 122387 Invalid, 1 Unknown, 0 Unchecked, 150743.64ms Time] [2021-11-02 16:13:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2021-11-02 16:13:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2021-11-02 16:13:52,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27854 states, 27796 states have (on average 1.3687221182904015) internal successors, (38045), 27805 states have internal predecessors, (38045), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 16:13:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38105 transitions. [2021-11-02 16:13:52,074 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38105 transitions. Word has length 20 [2021-11-02 16:13:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:13:52,075 INFO L470 AbstractCegarLoop]: Abstraction has 27854 states and 38105 transitions. [2021-11-02 16:13:52,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:13:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38105 transitions. [2021-11-02 16:13:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 16:13:52,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:13:52,076 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:13:52,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 16:13:52,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:13:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:13:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2021-11-02 16:13:52,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:13:52,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886517176] [2021-11-02 16:13:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:13:52,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:13:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:13:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:13:53,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:13:53,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886517176] [2021-11-02 16:13:53,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886517176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:13:53,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:13:53,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 16:13:53,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735246499] [2021-11-02 16:13:53,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 16:13:53,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:13:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 16:13:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 16:13:53,631 INFO L87 Difference]: Start difference. First operand 27854 states and 38105 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:13:55,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:21:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:21:02,672 INFO L93 Difference]: Finished difference Result 74742 states and 101747 transitions. [2021-11-02 16:21:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 16:21:02,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 16:21:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:21:02,804 INFO L225 Difference]: With dead ends: 74742 [2021-11-02 16:21:02,805 INFO L226 Difference]: Without dead ends: 65525 [2021-11-02 16:21:02,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 814.54ms TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 16:21:02,835 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 39489 mSDsluCounter, 132167 mSDsCounter, 0 mSdLazyCounter, 156169 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315127.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39489 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 156265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 809.62ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 156169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 421647.54ms IncrementalHoareTripleChecker+Time [2021-11-02 16:21:02,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39489 Valid, 203 Invalid, 156265 Unknown, 0 Unchecked, 809.62ms Time], IncrementalHoareTripleChecker [95 Valid, 156169 Invalid, 1 Unknown, 0 Unchecked, 421647.54ms Time] [2021-11-02 16:21:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65525 states. [2021-11-02 16:21:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65525 to 27844. [2021-11-02 16:21:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27786 states have (on average 1.3688188296264305) internal successors, (38034), 27795 states have internal predecessors, (38034), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 16:21:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38094 transitions. [2021-11-02 16:21:03,815 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38094 transitions. Word has length 23 [2021-11-02 16:21:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:21:03,815 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38094 transitions. [2021-11-02 16:21:03,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38094 transitions. [2021-11-02 16:21:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 16:21:03,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:21:03,816 INFO L514 BasicCegarLoop]: 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] [2021-11-02 16:21:03,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 16:21:03,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 16:21:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:21:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1084968097, now seen corresponding path program 1 times [2021-11-02 16:21:03,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:21:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426030602] [2021-11-02 16:21:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:21:03,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:21:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:21:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 16:21:05,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:21:05,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426030602] [2021-11-02 16:21:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426030602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:21:05,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:21:05,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 16:21:05,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021791884] [2021-11-02 16:21:05,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 16:21:05,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:21:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 16:21:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-02 16:21:05,247 INFO L87 Difference]: Start difference. First operand 27844 states and 38094 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 16:21:07,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15