/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:28:35,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:28:35,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:28:35,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:28:35,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:28:35,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:28:35,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:28:35,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:28:35,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:28:35,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:28:35,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:28:35,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:28:35,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:28:35,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:28:35,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:28:35,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:28:35,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:28:35,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:28:35,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:28:35,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:28:35,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:28:35,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:28:35,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:28:35,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:28:35,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 04:28:35,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 04:28:35,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 04:28:35,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 04:28:35,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 04:28:35,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 04:28:35,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:28:35,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:28:35,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:28:35,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:28:35,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:28:35,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:28:35,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:28:35,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:28:35,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:28:35,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:28:35,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:28:35,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:28:35,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:28:35,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:28:35,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:28:35,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:28:35,515 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:28:35,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:28:35,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:28:35,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:28:35,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:28:35,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:28:35,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:28:35,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:28:35,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:28:35,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:28:35,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:28:35,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:28:35,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:28:35,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:28:35,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:28:35,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:28:35,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:28:35,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:28:35,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:28:35,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:28:35,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:28:35,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:28:35,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:28:36,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:28:36,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:28:36,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:28:36,011 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:28:36,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-12-22 04:28:36,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b07c851/4d1046d0241d4eac94b6b97dc0552bfd/FLAG35df39862 [2020-12-22 04:28:36,789 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:28:36,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-12-22 04:28:36,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b07c851/4d1046d0241d4eac94b6b97dc0552bfd/FLAG35df39862 [2020-12-22 04:28:37,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b07c851/4d1046d0241d4eac94b6b97dc0552bfd [2020-12-22 04:28:37,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:28:37,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:28:37,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:28:37,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:28:37,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:28:37,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146cb70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37, skipping insertion in model container [2020-12-22 04:28:37,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:28:37,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:28:37,425 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2020-12-22 04:28:37,435 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2020-12-22 04:28:37,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2020-12-22 04:28:37,445 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2020-12-22 04:28:37,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2020-12-22 04:28:37,452 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2020-12-22 04:28:37,458 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2020-12-22 04:28:37,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2020-12-22 04:28:37,463 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2020-12-22 04:28:37,469 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2020-12-22 04:28:37,475 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2020-12-22 04:28:37,480 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2020-12-22 04:28:37,483 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2020-12-22 04:28:37,486 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2020-12-22 04:28:37,489 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2020-12-22 04:28:37,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2020-12-22 04:28:37,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:28:37,506 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:28:37,524 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2020-12-22 04:28:37,525 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2020-12-22 04:28:37,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2020-12-22 04:28:37,528 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2020-12-22 04:28:37,530 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2020-12-22 04:28:37,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2020-12-22 04:28:37,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2020-12-22 04:28:37,535 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2020-12-22 04:28:37,536 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2020-12-22 04:28:37,537 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2020-12-22 04:28:37,540 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2020-12-22 04:28:37,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2020-12-22 04:28:37,543 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2020-12-22 04:28:37,545 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2020-12-22 04:28:37,547 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2020-12-22 04:28:37,549 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2020-12-22 04:28:37,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:28:37,568 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:28:37,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37 WrapperNode [2020-12-22 04:28:37,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:28:37,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:28:37,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:28:37,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:28:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:28:37,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:28:37,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:28:37,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:28:37,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... [2020-12-22 04:28:37,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:28:37,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:28:37,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:28:37,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:28:37,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:28:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:28:38,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:28:38,145 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 04:28:38,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:38 BoogieIcfgContainer [2020-12-22 04:28:38,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:28:38,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:28:38,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:28:38,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:28:38,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:28:37" (1/3) ... [2020-12-22 04:28:38,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69520d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:28:38, skipping insertion in model container [2020-12-22 04:28:38,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:28:37" (2/3) ... [2020-12-22 04:28:38,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69520d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:28:38, skipping insertion in model container [2020-12-22 04:28:38,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:38" (3/3) ... [2020-12-22 04:28:38,156 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2020-12-22 04:28:38,163 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:28:38,169 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-22 04:28:38,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-22 04:28:38,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:28:38,226 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:28:38,226 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:28:38,226 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:28:38,226 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:28:38,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:28:38,226 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:28:38,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:28:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-22 04:28:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:28:38,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:38,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:38,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1241029004, now seen corresponding path program 1 times [2020-12-22 04:28:38,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:38,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753614433] [2020-12-22 04:28:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:38,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753614433] [2020-12-22 04:28:38,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:38,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:28:38,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935258476] [2020-12-22 04:28:38,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:28:38,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:38,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:28:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:28:38,627 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-12-22 04:28:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:38,682 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2020-12-22 04:28:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:28:38,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 04:28:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:38,702 INFO L225 Difference]: With dead ends: 83 [2020-12-22 04:28:38,702 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 04:28:38,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:28:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 04:28:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-12-22 04:28:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 04:28:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-22 04:28:38,751 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 9 [2020-12-22 04:28:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:38,751 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-22 04:28:38,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:28:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-22 04:28:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 04:28:38,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:38,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:38,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:28:38,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:38,754 INFO L82 PathProgramCache]: Analyzing trace with hash -182802478, now seen corresponding path program 1 times [2020-12-22 04:28:38,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:38,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566065193] [2020-12-22 04:28:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:38,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566065193] [2020-12-22 04:28:38,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:38,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:38,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634597926] [2020-12-22 04:28:38,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:38,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:38,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:38,838 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-12-22 04:28:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:38,908 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-12-22 04:28:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:28:38,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 04:28:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:38,911 INFO L225 Difference]: With dead ends: 73 [2020-12-22 04:28:38,911 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 04:28:38,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 04:28:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-12-22 04:28:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 04:28:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-12-22 04:28:38,922 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2020-12-22 04:28:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:38,923 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-12-22 04:28:38,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-12-22 04:28:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 04:28:38,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:38,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:38,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:28:38,925 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:38,926 INFO L82 PathProgramCache]: Analyzing trace with hash -179156060, now seen corresponding path program 1 times [2020-12-22 04:28:38,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:38,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062185811] [2020-12-22 04:28:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:38,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062185811] [2020-12-22 04:28:38,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:38,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:38,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946212299] [2020-12-22 04:28:38,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:38,994 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2020-12-22 04:28:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,098 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2020-12-22 04:28:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:28:39,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 04:28:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,100 INFO L225 Difference]: With dead ends: 143 [2020-12-22 04:28:39,101 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 04:28:39,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 04:28:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 52. [2020-12-22 04:28:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 04:28:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-12-22 04:28:39,112 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-12-22 04:28:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,112 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-12-22 04:28:39,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-12-22 04:28:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:28:39,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:28:39,114 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1258866483, now seen corresponding path program 1 times [2020-12-22 04:28:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052647746] [2020-12-22 04:28:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052647746] [2020-12-22 04:28:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:39,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804073340] [2020-12-22 04:28:39,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:39,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:39,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:39,172 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-12-22 04:28:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,242 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-12-22 04:28:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:28:39,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 04:28:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,244 INFO L225 Difference]: With dead ends: 92 [2020-12-22 04:28:39,244 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 04:28:39,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 04:28:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 50. [2020-12-22 04:28:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 04:28:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-12-22 04:28:39,254 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-12-22 04:28:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,255 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-12-22 04:28:39,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-12-22 04:28:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:28:39,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 04:28:39,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash 420636790, now seen corresponding path program 1 times [2020-12-22 04:28:39,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892344932] [2020-12-22 04:28:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892344932] [2020-12-22 04:28:39,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:39,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812402869] [2020-12-22 04:28:39,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:39,315 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-12-22 04:28:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,377 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-12-22 04:28:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:28:39,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:28:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,379 INFO L225 Difference]: With dead ends: 69 [2020-12-22 04:28:39,379 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 04:28:39,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 04:28:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-12-22 04:28:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 04:28:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-12-22 04:28:39,387 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 12 [2020-12-22 04:28:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,388 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-12-22 04:28:39,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-12-22 04:28:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:28:39,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 04:28:39,389 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash -370151221, now seen corresponding path program 1 times [2020-12-22 04:28:39,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099276918] [2020-12-22 04:28:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099276918] [2020-12-22 04:28:39,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:39,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829704426] [2020-12-22 04:28:39,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:39,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,466 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-12-22 04:28:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,556 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-12-22 04:28:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:28:39,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 04:28:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,558 INFO L225 Difference]: With dead ends: 87 [2020-12-22 04:28:39,558 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 04:28:39,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:28:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 04:28:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 46. [2020-12-22 04:28:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 04:28:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-22 04:28:39,567 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 12 [2020-12-22 04:28:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,567 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-22 04:28:39,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-22 04:28:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:28:39,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 04:28:39,569 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,570 INFO L82 PathProgramCache]: Analyzing trace with hash 154842714, now seen corresponding path program 1 times [2020-12-22 04:28:39,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080391618] [2020-12-22 04:28:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080391618] [2020-12-22 04:28:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576064070] [2020-12-22 04:28:39,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,627 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-12-22 04:28:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,745 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-12-22 04:28:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:28:39,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:28:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,746 INFO L225 Difference]: With dead ends: 75 [2020-12-22 04:28:39,747 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 04:28:39,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:28:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 04:28:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 44. [2020-12-22 04:28:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 04:28:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-12-22 04:28:39,753 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 13 [2020-12-22 04:28:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,754 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-12-22 04:28:39,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-12-22 04:28:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:28:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 04:28:39,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1410218132, now seen corresponding path program 1 times [2020-12-22 04:28:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302942222] [2020-12-22 04:28:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302942222] [2020-12-22 04:28:39,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:39,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487922182] [2020-12-22 04:28:39,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:39,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:39,798 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 4 states. [2020-12-22 04:28:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,851 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-22 04:28:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:28:39,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 04:28:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,853 INFO L225 Difference]: With dead ends: 83 [2020-12-22 04:28:39,853 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 04:28:39,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 04:28:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 42. [2020-12-22 04:28:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 04:28:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-12-22 04:28:39,859 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 13 [2020-12-22 04:28:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,860 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-12-22 04:28:39,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-12-22 04:28:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:28:39,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 04:28:39,861 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash 505160957, now seen corresponding path program 1 times [2020-12-22 04:28:39,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59115044] [2020-12-22 04:28:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:39,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59115044] [2020-12-22 04:28:39,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:39,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:39,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229314579] [2020-12-22 04:28:39,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:39,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:39,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:39,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:39,907 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-12-22 04:28:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:39,972 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-12-22 04:28:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:28:39,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 04:28:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:39,973 INFO L225 Difference]: With dead ends: 57 [2020-12-22 04:28:39,973 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 04:28:39,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:28:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 04:28:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-12-22 04:28:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 04:28:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-22 04:28:39,979 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 14 [2020-12-22 04:28:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:39,979 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-22 04:28:39,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-22 04:28:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:28:39,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:39,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:39,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 04:28:39,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1519875391, now seen corresponding path program 1 times [2020-12-22 04:28:39,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:39,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940289411] [2020-12-22 04:28:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940289411] [2020-12-22 04:28:40,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:40,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959792423] [2020-12-22 04:28:40,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:40,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:40,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:40,024 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-22 04:28:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,066 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-12-22 04:28:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:28:40,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-22 04:28:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,067 INFO L225 Difference]: With dead ends: 57 [2020-12-22 04:28:40,067 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 04:28:40,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 04:28:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2020-12-22 04:28:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-22 04:28:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-12-22 04:28:40,073 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2020-12-22 04:28:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,073 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-12-22 04:28:40,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-12-22 04:28:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:28:40,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 04:28:40,074 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash 128507268, now seen corresponding path program 1 times [2020-12-22 04:28:40,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195708311] [2020-12-22 04:28:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195708311] [2020-12-22 04:28:40,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:28:40,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312120327] [2020-12-22 04:28:40,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:28:40,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:28:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:28:40,132 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 4 states. [2020-12-22 04:28:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,203 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-12-22 04:28:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:28:40,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 04:28:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,205 INFO L225 Difference]: With dead ends: 65 [2020-12-22 04:28:40,205 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 04:28:40,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 04:28:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-12-22 04:28:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 04:28:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-22 04:28:40,213 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-12-22 04:28:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,215 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-22 04:28:40,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:28:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-22 04:28:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 04:28:40,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 04:28:40,217 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash -311237848, now seen corresponding path program 1 times [2020-12-22 04:28:40,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368764577] [2020-12-22 04:28:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368764577] [2020-12-22 04:28:40,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:40,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929918821] [2020-12-22 04:28:40,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:40,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:40,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:40,262 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-12-22 04:28:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,354 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-12-22 04:28:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:28:40,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 04:28:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,355 INFO L225 Difference]: With dead ends: 70 [2020-12-22 04:28:40,355 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 04:28:40,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:28:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 04:28:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 34. [2020-12-22 04:28:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 04:28:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-22 04:28:40,360 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2020-12-22 04:28:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,361 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-22 04:28:40,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-22 04:28:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:28:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 04:28:40,362 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1058434549, now seen corresponding path program 1 times [2020-12-22 04:28:40,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146815562] [2020-12-22 04:28:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146815562] [2020-12-22 04:28:40,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:28:40,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397402777] [2020-12-22 04:28:40,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:28:40,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:28:40,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:28:40,410 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-12-22 04:28:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,515 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-12-22 04:28:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:28:40,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 04:28:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,516 INFO L225 Difference]: With dead ends: 58 [2020-12-22 04:28:40,516 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 04:28:40,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:28:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 04:28:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 32. [2020-12-22 04:28:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 04:28:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 04:28:40,521 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2020-12-22 04:28:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,521 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 04:28:40,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:28:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 04:28:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 04:28:40,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 04:28:40,523 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1548271503, now seen corresponding path program 1 times [2020-12-22 04:28:40,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121964329] [2020-12-22 04:28:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121964329] [2020-12-22 04:28:40,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 04:28:40,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334246392] [2020-12-22 04:28:40,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:28:40,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:28:40,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:28:40,564 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-12-22 04:28:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,665 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2020-12-22 04:28:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:28:40,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-22 04:28:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,666 INFO L225 Difference]: With dead ends: 83 [2020-12-22 04:28:40,667 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 04:28:40,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:28:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 04:28:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 30. [2020-12-22 04:28:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 04:28:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-12-22 04:28:40,672 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-12-22 04:28:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,672 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-12-22 04:28:40,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:28:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-12-22 04:28:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:28:40,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 04:28:40,674 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,674 INFO L82 PathProgramCache]: Analyzing trace with hash 751780498, now seen corresponding path program 1 times [2020-12-22 04:28:40,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069488180] [2020-12-22 04:28:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069488180] [2020-12-22 04:28:40,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:28:40,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754612770] [2020-12-22 04:28:40,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:28:40,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:28:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:28:40,723 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-12-22 04:28:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:40,828 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-12-22 04:28:40,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:28:40,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-22 04:28:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:40,829 INFO L225 Difference]: With dead ends: 56 [2020-12-22 04:28:40,830 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 04:28:40,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:28:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 04:28:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2020-12-22 04:28:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 04:28:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 04:28:40,834 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-12-22 04:28:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:40,835 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 04:28:40,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:28:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 04:28:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 04:28:40,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:28:40,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:28:40,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 04:28:40,836 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:28:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:28:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1830363126, now seen corresponding path program 1 times [2020-12-22 04:28:40,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:28:40,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075674721] [2020-12-22 04:28:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:28:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:28:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:28:40,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075674721] [2020-12-22 04:28:40,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:28:40,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:28:40,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677898654] [2020-12-22 04:28:40,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:28:40,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:28:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:28:40,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:28:40,901 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-12-22 04:28:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:28:41,053 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-12-22 04:28:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:28:41,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-22 04:28:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:28:41,054 INFO L225 Difference]: With dead ends: 121 [2020-12-22 04:28:41,054 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:28:41,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:28:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:28:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:28:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:28:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:28:41,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-22 04:28:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:28:41,056 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:28:41,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:28:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:28:41,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:28:41,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 04:28:41,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:28:41,181 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2020-12-22 04:28:41,311 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 98 [2020-12-22 04:28:41,455 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2020-12-22 04:28:41,590 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 17 [2020-12-22 04:28:41,933 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 33 [2020-12-22 04:28:42,159 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 9 [2020-12-22 04:28:42,162 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-22 04:28:42,162 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point L217(line 217) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point L151(lines 151 281) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point L110(lines 110 123) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point L36(lines 36 300) no Hoare annotation was computed. [2020-12-22 04:28:42,163 INFO L189 CegarLoopUtils]: For program point L193(line 193) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point L86(lines 86 127) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point L20(lines 20 312) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point L243(lines 243 267) no Hoare annotation was computed. [2020-12-22 04:28:42,164 INFO L189 CegarLoopUtils]: For program point L177(line 177) no Hoare annotation was computed. [2020-12-22 04:28:42,165 INFO L189 CegarLoopUtils]: For program point L45(lines 45 288) no Hoare annotation was computed. [2020-12-22 04:28:42,165 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 257) no Hoare annotation was computed. [2020-12-22 04:28:42,165 INFO L185 CegarLoopUtils]: At program point L293(lines 38 294) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__j~0) (<= (+ ULTIMATE.start_main_~main__j~0 5) ULTIMATE.start_main_~main__bufsize~0) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0)) [2020-12-22 04:28:42,165 INFO L189 CegarLoopUtils]: For program point L227(lines 227 269) no Hoare annotation was computed. [2020-12-22 04:28:42,166 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-12-22 04:28:42,166 INFO L189 CegarLoopUtils]: For program point L153(line 153) no Hoare annotation was computed. [2020-12-22 04:28:42,166 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 88) no Hoare annotation was computed. [2020-12-22 04:28:42,166 INFO L192 CegarLoopUtils]: At program point L310(lines 13 313) the Hoare annotation is: true [2020-12-22 04:28:42,167 INFO L189 CegarLoopUtils]: For program point L112(line 112) no Hoare annotation was computed. [2020-12-22 04:28:42,168 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 245) no Hoare annotation was computed. [2020-12-22 04:28:42,168 INFO L189 CegarLoopUtils]: For program point L203(lines 203 273) no Hoare annotation was computed. [2020-12-22 04:28:42,168 INFO L189 CegarLoopUtils]: For program point L38(lines 38 294) no Hoare annotation was computed. [2020-12-22 04:28:42,168 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-12-22 04:28:42,168 INFO L189 CegarLoopUtils]: For program point L88(line 88) no Hoare annotation was computed. [2020-12-22 04:28:42,169 INFO L189 CegarLoopUtils]: For program point L245(line 245) no Hoare annotation was computed. [2020-12-22 04:28:42,169 INFO L189 CegarLoopUtils]: For program point L47(line 47) no Hoare annotation was computed. [2020-12-22 04:28:42,169 INFO L189 CegarLoopUtils]: For program point L229(line 229) no Hoare annotation was computed. [2020-12-22 04:28:42,169 INFO L189 CegarLoopUtils]: For program point L163(lines 163 279) no Hoare annotation was computed. [2020-12-22 04:28:42,169 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2020-12-22 04:28:42,171 INFO L185 CegarLoopUtils]: At program point L304(lines 25 312) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__i~0) (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0)) [2020-12-22 04:28:42,171 INFO L189 CegarLoopUtils]: For program point L205(line 205) no Hoare annotation was computed. [2020-12-22 04:28:42,171 INFO L189 CegarLoopUtils]: For program point L139(lines 139 283) no Hoare annotation was computed. [2020-12-22 04:28:42,171 INFO L189 CegarLoopUtils]: For program point L98(lines 98 125) no Hoare annotation was computed. [2020-12-22 04:28:42,171 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:28:42,172 INFO L189 CegarLoopUtils]: For program point L255(lines 255 265) no Hoare annotation was computed. [2020-12-22 04:28:42,172 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 165) no Hoare annotation was computed. [2020-12-22 04:28:42,172 INFO L189 CegarLoopUtils]: For program point L57(lines 57 286) no Hoare annotation was computed. [2020-12-22 04:28:42,172 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-12-22 04:28:42,172 INFO L189 CegarLoopUtils]: For program point L74(lines 74 129) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L185 CegarLoopUtils]: At program point L264(lines 31 306) the Hoare annotation is: (let ((.cse3 (<= (+ ULTIMATE.start_main_~main__j~0 4) ULTIMATE.start_main_~main__bufsize~0))) (let ((.cse1 (let ((.cse4 (<= 1 ULTIMATE.start_main_~main__i~0))) (or (and .cse3 .cse4) (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse4)))) (.cse2 (<= 1 ULTIMATE.start_main_~main__j~0)) (.cse0 (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0))) (or (and (= ULTIMATE.start_main_~main__j~0 0) (<= 0 ULTIMATE.start_main_~main__i~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) .cse0) (and .cse1 .cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~14 0)) .cse0) (and .cse3 .cse1 .cse2 .cse0)))) [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point L165(line 165) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point L66(lines 66 285) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point L215(lines 215 271) no Hoare annotation was computed. [2020-12-22 04:28:42,173 INFO L189 CegarLoopUtils]: For program point L141(line 141) no Hoare annotation was computed. [2020-12-22 04:28:42,174 INFO L189 CegarLoopUtils]: For program point L100(line 100) no Hoare annotation was computed. [2020-12-22 04:28:42,174 INFO L189 CegarLoopUtils]: For program point L257(line 257) no Hoare annotation was computed. [2020-12-22 04:28:42,174 INFO L189 CegarLoopUtils]: For program point L191(lines 191 275) no Hoare annotation was computed. [2020-12-22 04:28:42,174 INFO L189 CegarLoopUtils]: For program point L59(line 59) no Hoare annotation was computed. [2020-12-22 04:28:42,175 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2020-12-22 04:28:42,175 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2020-12-22 04:28:42,175 INFO L189 CegarLoopUtils]: For program point L175(lines 175 277) no Hoare annotation was computed. [2020-12-22 04:28:42,175 INFO L189 CegarLoopUtils]: For program point L76(line 76) no Hoare annotation was computed. [2020-12-22 04:28:42,175 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 229) no Hoare annotation was computed. [2020-12-22 04:28:42,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:28:42 BoogieIcfgContainer [2020-12-22 04:28:42,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:28:42,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:28:42,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:28:42,206 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:28:42,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:28:38" (3/4) ... [2020-12-22 04:28:42,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:28:42,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 04:28:42,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:28:42,230 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:28:42,230 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:28:42,321 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c-witness.graphml [2020-12-22 04:28:42,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:28:42,323 INFO L168 Benchmark]: Toolchain (without parser) took 5153.29 ms. Allocated memory was 157.3 MB in the beginning and 237.0 MB in the end (delta: 79.7 MB). Free memory was 131.9 MB in the beginning and 188.4 MB in the end (delta: -56.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,323 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 157.3 MB. Free memory was 128.3 MB in the beginning and 128.2 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:28:42,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.79 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 115.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 157.3 MB. Free memory was 115.6 MB in the beginning and 113.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,325 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 157.3 MB. Free memory was 113.6 MB in the beginning and 112.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,325 INFO L168 Benchmark]: RCFGBuilder took 505.14 ms. Allocated memory is still 157.3 MB. Free memory was 112.4 MB in the beginning and 126.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,326 INFO L168 Benchmark]: TraceAbstraction took 4056.30 ms. Allocated memory was 157.3 MB in the beginning and 237.0 MB in the end (delta: 79.7 MB). Free memory was 125.9 MB in the beginning and 193.6 MB in the end (delta: -67.8 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,326 INFO L168 Benchmark]: Witness Printer took 115.67 ms. Allocated memory is still 237.0 MB. Free memory was 193.6 MB in the beginning and 188.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:28:42,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 157.3 MB. Free memory was 128.3 MB in the beginning and 128.2 MB in the end (delta: 88.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.79 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 115.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 157.3 MB. Free memory was 115.6 MB in the beginning and 113.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 157.3 MB. Free memory was 113.6 MB in the beginning and 112.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 505.14 ms. Allocated memory is still 157.3 MB. Free memory was 112.4 MB in the beginning and 126.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4056.30 ms. Allocated memory was 157.3 MB in the beginning and 237.0 MB in the end (delta: 79.7 MB). Free memory was 125.9 MB in the beginning and 193.6 MB in the end (delta: -67.8 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. * Witness Printer took 115.67 ms. Allocated memory is still 237.0 MB. Free memory was 193.6 MB in the beginning and 188.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 165]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 153]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 257]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 88]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 47]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 217]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 112]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 141]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 193]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 245]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 229]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 205]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= main__j && main__j + 5 <= main__bufsize) && 0 <= main__i) && main__i < main__len) && main__limit + 4 <= main__bufsize - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((main__j == 0 && 0 <= main__i) && main__i < main__len) && main__limit + 4 <= main__bufsize) || (((((main__j + 4 <= main__bufsize && 1 <= main__i) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__i)) && 1 <= main__j) && !(__VERIFIER_assert__cond == 0)) && main__limit + 4 <= main__bufsize)) || (((main__j + 4 <= main__bufsize && ((main__j + 4 <= main__bufsize && 1 <= main__i) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__i))) && 1 <= main__j) && main__limit + 4 <= main__bufsize) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 <= main__i && main__limit + 4 <= main__bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 883 SDtfs, 1261 SDslu, 715 SDs, 0 SdLazy, 912 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 436 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 25 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 233044656 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 253791 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 9440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...