./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-2.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-2.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 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 16:08:35,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 16:08:35,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 16:08:35,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 16:08:35,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 16:08:35,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 16:08:35,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 16:08:35,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 16:08:35,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 16:08:35,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 16:08:35,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 16:08:35,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 16:08:35,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 16:08:35,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 16:08:35,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 16:08:35,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 16:08:35,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 16:08:35,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 16:08:35,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 16:08:35,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 16:08:35,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 16:08:35,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 16:08:35,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 16:08:35,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 16:08:35,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 16:08:35,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 16:08:35,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 16:08:35,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 16:08:35,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 16:08:35,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 16:08:35,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 16:08:35,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 16:08:35,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 16:08:35,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 16:08:35,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 16:08:35,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 16:08:35,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 16:08:35,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 16:08:35,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 16:08:35,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 16:08:35,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 16:08:35,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 16:08:35,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 16:08:35,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 16:08:35,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 16:08:35,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 16:08:35,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 16:08:35,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 16:08:35,948 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 16:08:35,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 16:08:35,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 16:08:35,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 16:08:35,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 16:08:35,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 16:08:35,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 16:08:35,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 16:08:35,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 16:08:35,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 16:08:35,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 16:08:35,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 16:08:35,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 16:08:35,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:08:35,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 16:08:35,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 16:08:35,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 16:08:35,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 16:08:35,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 16:08:35,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 16:08:35,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 16:08:35,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 16:08:35,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 16:08:35,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2021-11-02 16:08:36,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 16:08:36,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 16:08:36,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 16:08:36,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 16:08:36,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 16:08:36,183 INFO L432 ainManager$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-2.i [2021-11-02 16:08:36,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669dc0bcd/a3ce5f24e2db465c9d81edda26a8c64c/FLAG77a3956da [2021-11-02 16:08:36,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 16:08:36,747 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-2.i [2021-11-02 16:08:36,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669dc0bcd/a3ce5f24e2db465c9d81edda26a8c64c/FLAG77a3956da [2021-11-02 16:08:37,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669dc0bcd/a3ce5f24e2db465c9d81edda26a8c64c [2021-11-02 16:08:37,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 16:08:37,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 16:08:37,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 16:08:37,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 16:08:37,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 16:08:37,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:08:37" (1/1) ... [2021-11-02 16:08:37,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdc6b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:37, skipping insertion in model container [2021-11-02 16:08:37,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 04:08:37" (1/1) ... [2021-11-02 16:08:37,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 16:08:37,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 16:08:38,158 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-2.i[158757,158770] [2021-11-02 16:08:38,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:08:38,219 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 16:08:38,391 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-2.i[158757,158770] [2021-11-02 16:08:38,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 16:08:38,449 INFO L208 MainTranslator]: Completed translation [2021-11-02 16:08:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38 WrapperNode [2021-11-02 16:08:38,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 16:08:38,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 16:08:38,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 16:08:38,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 16:08:38,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:38,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:39,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 16:08:39,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 16:08:39,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 16:08:39,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 16:08:39,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:39,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:39,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:39,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:40,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:40,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:40,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:41,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 16:08:41,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 16:08:41,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 16:08:41,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 16:08:41,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (1/1) ... [2021-11-02 16:08:41,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 16:08:41,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 16:08:41,255 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 16:08:41,274 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 16:08:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 16:08:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 16:08:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 16:08:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 16:08:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-02 16:08:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-02 16:08:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-02 16:08:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-02 16:08:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 16:08:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-02 16:08:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-02 16:08:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-02 16:08:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-02 16:08:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 16:08:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 16:08:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 16:08:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 16:09:10,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 16:09:10,606 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2021-11-02 16:09:10,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:09:10 BoogieIcfgContainer [2021-11-02 16:09:10,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 16:09:10,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 16:09:10,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 16:09:10,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 16:09:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 04:08:37" (1/3) ... [2021-11-02 16:09:10,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15879c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:09:10, skipping insertion in model container [2021-11-02 16:09:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 04:08:38" (2/3) ... [2021-11-02 16:09:10,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15879c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 04:09:10, skipping insertion in model container [2021-11-02 16:09:10,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 04:09:10" (3/3) ... [2021-11-02 16:09:10,625 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-11-02 16:09:10,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 16:09:10,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 16:09:10,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 16:09:10,712 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 16:09:10,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 16:09:10,842 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 16:09:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 16:09:10,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:09:10,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:09:10,846 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 16:09:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:09:10,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2021-11-02 16:09:10,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:09:10,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907920175] [2021-11-02 16:09:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:09:10,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:09:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:09:11,314 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 16:09:11,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:09:11,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907920175] [2021-11-02 16:09:11,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907920175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:09:11,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:09:11,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:09:11,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085598744] [2021-11-02 16:09:11,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:09:11,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:09:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:09:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:11,355 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 16:09:13,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:09:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:09:46,565 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2021-11-02 16:09:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:09:46,567 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 16:09:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:09:46,647 INFO L225 Difference]: With dead ends: 29868 [2021-11-02 16:09:46,647 INFO L226 Difference]: Without dead ends: 18529 [2021-11-02 16:09:46,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:46,708 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 12713 mSDsluCounter, 12630 mSDsCounter, 0 mSdLazyCounter, 25318 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29564.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12713 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.77ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33966.75ms IncrementalHoareTripleChecker+Time [2021-11-02 16:09:46,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12713 Valid, 52 Invalid, 25331 Unknown, 0 Unchecked, 61.77ms Time], IncrementalHoareTripleChecker [12 Valid, 25318 Invalid, 1 Unknown, 0 Unchecked, 33966.75ms Time] [2021-11-02 16:09:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2021-11-02 16:09:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2021-11-02 16:09:47,132 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 16:09:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25344 transitions. [2021-11-02 16:09:47,183 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25344 transitions. Word has length 8 [2021-11-02 16:09:47,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:09:47,184 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 25344 transitions. [2021-11-02 16:09:47,185 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 16:09:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25344 transitions. [2021-11-02 16:09:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 16:09:47,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:09:47,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 16:09:47,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 16:09:47,187 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 16:09:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:09:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2021-11-02 16:09:47,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:09:47,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16072968] [2021-11-02 16:09:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:09:47,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:09:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:09:47,351 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 16:09:47,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:09:47,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16072968] [2021-11-02 16:09:47,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16072968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:09:47,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:09:47,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:09:47,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298050545] [2021-11-02 16:09:47,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:09:47,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:09:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:09:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:09:47,356 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 16:09:49,404 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 16:10:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:10:24,299 INFO L93 Difference]: Finished difference Result 46242 states and 63288 transitions. [2021-11-02 16:10:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:10:24,299 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 16:10:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:10:24,424 INFO L225 Difference]: With dead ends: 46242 [2021-11-02 16:10:24,424 INFO L226 Difference]: Without dead ends: 37009 [2021-11-02 16:10:24,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:10:24,461 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12700 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 25360 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31142.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12700 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.69ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36002.51ms IncrementalHoareTripleChecker+Time [2021-11-02 16:10:24,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12700 Valid, 50 Invalid, 25369 Unknown, 0 Unchecked, 56.69ms Time], IncrementalHoareTripleChecker [8 Valid, 25360 Invalid, 1 Unknown, 0 Unchecked, 36002.51ms Time] [2021-11-02 16:10:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2021-11-02 16:10:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2021-11-02 16:10:25,004 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 16:10:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38026 transitions. [2021-11-02 16:10:25,067 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38026 transitions. Word has length 9 [2021-11-02 16:10:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:10:25,067 INFO L470 AbstractCegarLoop]: Abstraction has 27787 states and 38026 transitions. [2021-11-02 16:10:25,068 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 16:10:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38026 transitions. [2021-11-02 16:10:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 16:10:25,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:10:25,068 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 16:10:25,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 16:10:25,069 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 16:10:25,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:10:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2021-11-02 16:10:25,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:10:25,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873350511] [2021-11-02 16:10:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:10:25,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:10:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:10:25,220 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 16:10:25,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:10:25,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873350511] [2021-11-02 16:10:25,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873350511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:10:25,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:10:25,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 16:10:25,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570747500] [2021-11-02 16:10:25,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 16:10:25,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:10:25,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 16:10:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:10:25,222 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 16:10:27,256 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 16:11:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:11:06,655 INFO L93 Difference]: Finished difference Result 64742 states and 88619 transitions. [2021-11-02 16:11:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 16:11:06,656 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 16:11:06,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:11:06,817 INFO L225 Difference]: With dead ends: 64742 [2021-11-02 16:11:06,818 INFO L226 Difference]: Without dead ends: 55505 [2021-11-02 16:11:06,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 16:11:06,856 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12691 mSDsluCounter, 12665 mSDsCounter, 0 mSdLazyCounter, 25344 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34188.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12691 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.32ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40145.03ms IncrementalHoareTripleChecker+Time [2021-11-02 16:11:06,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12691 Valid, 50 Invalid, 25351 Unknown, 0 Unchecked, 43.32ms Time], IncrementalHoareTripleChecker [6 Valid, 25344 Invalid, 1 Unknown, 0 Unchecked, 40145.03ms Time] [2021-11-02 16:11:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2021-11-02 16:11:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2021-11-02 16:11:07,490 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 16:11:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38095 transitions. [2021-11-02 16:11:07,545 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38095 transitions. Word has length 18 [2021-11-02 16:11:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:11:07,545 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38095 transitions. [2021-11-02 16:11:07,546 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 16:11:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38095 transitions. [2021-11-02 16:11:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 16:11:07,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:11:07,547 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 16:11:07,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 16:11:07,547 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 16:11:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:11:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2021-11-02 16:11:07,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:11:07,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660779632] [2021-11-02 16:11:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:11:07,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:11:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:11:08,266 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 16:11:08,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:11:08,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660779632] [2021-11-02 16:11:08,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660779632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:11:08,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:11:08,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 16:11:08,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267921585] [2021-11-02 16:11:08,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 16:11:08,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:11:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 16:11:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 16:11:08,267 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 16:11:10,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:13:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:13:34,018 INFO L93 Difference]: Finished difference Result 92276 states and 125801 transitions. [2021-11-02 16:13:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 16:13:34,018 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 16:13:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:13:34,154 INFO L225 Difference]: With dead ends: 92276 [2021-11-02 16:13:34,155 INFO L226 Difference]: Without dead ends: 64534 [2021-11-02 16:13:34,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 262.04ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-02 16:13:34,215 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39761 mSDsluCounter, 105386 mSDsCounter, 0 mSdLazyCounter, 122387 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121804.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39763 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 122428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 386.16ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142130.78ms IncrementalHoareTripleChecker+Time [2021-11-02 16:13:34,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39763 Valid, 177 Invalid, 122428 Unknown, 0 Unchecked, 386.16ms Time], IncrementalHoareTripleChecker [40 Valid, 122387 Invalid, 1 Unknown, 0 Unchecked, 142130.78ms Time] [2021-11-02 16:13:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2021-11-02 16:13:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2021-11-02 16:13:35,025 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 16:13:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38105 transitions. [2021-11-02 16:13:35,076 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38105 transitions. Word has length 20 [2021-11-02 16:13:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:13:35,077 INFO L470 AbstractCegarLoop]: Abstraction has 27854 states and 38105 transitions. [2021-11-02 16:13:35,077 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 16:13:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38105 transitions. [2021-11-02 16:13:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 16:13:35,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:13:35,078 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 16:13:35,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 16:13:35,078 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 16:13:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:13:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2021-11-02 16:13:35,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:13:35,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552895213] [2021-11-02 16:13:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:13:35,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:13:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:13:35,711 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 16:13:35,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:13:35,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552895213] [2021-11-02 16:13:35,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552895213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:13:35,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:13:35,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 16:13:35,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930342198] [2021-11-02 16:13:35,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 16:13:35,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:13:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 16:13:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 16:13:35,712 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 16:13:37,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 16:22:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 16:22:03,477 INFO L93 Difference]: Finished difference Result 74742 states and 101747 transitions. [2021-11-02 16:22:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 16:22:03,479 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 16:22:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 16:22:03,620 INFO L225 Difference]: With dead ends: 74742 [2021-11-02 16:22:03,621 INFO L226 Difference]: Without dead ends: 65525 [2021-11-02 16:22:03,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 997.63ms TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 16:22:03,653 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 39489 mSDsluCounter, 132167 mSDsCounter, 0 mSdLazyCounter, 156169 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363338.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39489 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 156265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 849.05ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 156169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 500285.95ms IncrementalHoareTripleChecker+Time [2021-11-02 16:22:03,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39489 Valid, 203 Invalid, 156265 Unknown, 0 Unchecked, 849.05ms Time], IncrementalHoareTripleChecker [95 Valid, 156169 Invalid, 1 Unknown, 0 Unchecked, 500285.95ms Time] [2021-11-02 16:22:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65525 states. [2021-11-02 16:22:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65525 to 27844. [2021-11-02 16:22:04,655 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 16:22:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38094 transitions. [2021-11-02 16:22:04,714 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38094 transitions. Word has length 23 [2021-11-02 16:22:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 16:22:04,714 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38094 transitions. [2021-11-02 16:22:04,715 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 16:22:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38094 transitions. [2021-11-02 16:22:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 16:22:04,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 16:22:04,719 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 16:22:04,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 16:22:04,719 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 16:22:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 16:22:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1084968097, now seen corresponding path program 1 times [2021-11-02 16:22:04,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 16:22:04,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742777124] [2021-11-02 16:22:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 16:22:04,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 16:22:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 16:22:05,357 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 16:22:05,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 16:22:05,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742777124] [2021-11-02 16:22:05,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742777124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 16:22:05,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 16:22:05,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 16:22:05,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352646186] [2021-11-02 16:22:05,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 16:22:05,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 16:22:05,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 16:22:05,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 16:22:05,359 INFO L87 Difference]: Start difference. First operand 27844 states and 38094 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 16:22:07,407 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 [] Killed by 15