/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 20:47:23,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 20:47:23,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 20:47:23,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 20:47:23,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 20:47:23,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 20:47:23,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 20:47:23,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 20:47:23,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 20:47:23,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 20:47:23,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 20:47:23,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 20:47:23,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 20:47:23,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 20:47:23,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 20:47:23,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 20:47:23,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 20:47:23,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 20:47:23,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 20:47:23,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 20:47:23,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 20:47:23,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 20:47:23,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 20:47:23,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 20:47:23,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 20:47:23,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 20:47:23,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 20:47:23,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 20:47:23,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 20:47:23,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 20:47:23,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 20:47:23,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 20:47:23,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 20:47:23,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 20:47:23,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 20:47:23,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 20:47:23,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 20:47:23,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 20:47:23,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 20:47:23,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 20:47:23,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 20:47:23,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 20:47:23,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 20:47:23,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 20:47:23,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 20:47:23,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 20:47:23,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 20:47:23,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 20:47:23,468 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 20:47:23,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 20:47:23,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 20:47:23,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 20:47:23,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 20:47:23,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 20:47:23,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 20:47:23,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 20:47:23,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 20:47:23,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 20:47:23,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 20:47:23,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 20:47:23,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 20:47:23,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:47:23,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 20:47:23,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 20:47:23,472 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 20:47:23,472 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 20:47:23,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 20:47:23,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 20:47:23,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 20:47:23,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 20:47:23,669 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 20:47:23,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2022-02-23 20:47:23,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54baf34b0/6b96ba29f2db4b4fa77a01bbeb64cae7/FLAG047e7fb52 [2022-02-23 20:47:24,056 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 20:47:24,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2022-02-23 20:47:24,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54baf34b0/6b96ba29f2db4b4fa77a01bbeb64cae7/FLAG047e7fb52 [2022-02-23 20:47:24,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54baf34b0/6b96ba29f2db4b4fa77a01bbeb64cae7 [2022-02-23 20:47:24,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 20:47:24,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 20:47:24,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 20:47:24,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 20:47:24,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 20:47:24,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b27cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24, skipping insertion in model container [2022-02-23 20:47:24,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 20:47:24,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 20:47:24,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2022-02-23 20:47:24,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2022-02-23 20:47:24,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2022-02-23 20:47:24,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2022-02-23 20:47:24,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2022-02-23 20:47:24,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2022-02-23 20:47:24,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2022-02-23 20:47:24,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2022-02-23 20:47:24,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2022-02-23 20:47:24,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2022-02-23 20:47:24,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2022-02-23 20:47:24,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2022-02-23 20:47:24,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2022-02-23 20:47:24,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2022-02-23 20:47:24,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2022-02-23 20:47:24,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2022-02-23 20:47:24,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2022-02-23 20:47:24,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:47:24,709 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 20:47:24,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2022-02-23 20:47:24,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2022-02-23 20:47:24,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2022-02-23 20:47:24,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2022-02-23 20:47:24,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2022-02-23 20:47:24,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2022-02-23 20:47:24,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2022-02-23 20:47:24,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2022-02-23 20:47:24,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2022-02-23 20:47:24,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2022-02-23 20:47:24,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2022-02-23 20:47:24,737 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2022-02-23 20:47:24,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2022-02-23 20:47:24,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2022-02-23 20:47:24,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2022-02-23 20:47:24,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2022-02-23 20:47:24,743 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2022-02-23 20:47:24,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:47:24,756 INFO L208 MainTranslator]: Completed translation [2022-02-23 20:47:24,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24 WrapperNode [2022-02-23 20:47:24,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 20:47:24,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 20:47:24,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 20:47:24,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 20:47:24,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 20:47:24,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 20:47:24,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 20:47:24,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 20:47:24,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (1/1) ... [2022-02-23 20:47:24,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:47:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:24,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 20:47:24,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 20:47:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 20:47:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 20:47:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 20:47:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 20:47:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 20:47:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 20:47:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 20:47:24,919 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 20:47:24,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 20:47:25,153 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 20:47:25,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 20:47:25,162 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-23 20:47:25,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:25 BoogieIcfgContainer [2022-02-23 20:47:25,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 20:47:25,165 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 20:47:25,165 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 20:47:25,166 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 20:47:25,168 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:25" (1/1) ... [2022-02-23 20:47:25,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:47:25 BasicIcfg [2022-02-23 20:47:25,191 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 20:47:25,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 20:47:25,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 20:47:25,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 20:47:25,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 08:47:24" (1/4) ... [2022-02-23 20:47:25,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df793a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:47:25, skipping insertion in model container [2022-02-23 20:47:25,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:24" (2/4) ... [2022-02-23 20:47:25,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df793a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:47:25, skipping insertion in model container [2022-02-23 20:47:25,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:25" (3/4) ... [2022-02-23 20:47:25,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df793a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:47:25, skipping insertion in model container [2022-02-23 20:47:25,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:47:25" (4/4) ... [2022-02-23 20:47:25,200 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.cqvasr [2022-02-23 20:47:25,204 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 20:47:25,204 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-02-23 20:47:25,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 20:47:25,250 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 20:47:25,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-02-23 20:47:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 54 states have (on average 1.8333333333333333) internal successors, (99), 71 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 20:47:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 20:47:25,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:25,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:25,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:25,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1220864783, now seen corresponding path program 1 times [2022-02-23 20:47:25,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:25,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496484494] [2022-02-23 20:47:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:25,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:25,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496484494] [2022-02-23 20:47:25,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496484494] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:25,537 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:25,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:25,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944187663] [2022-02-23 20:47:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:25,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:25,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:25,575 INFO L87 Difference]: Start difference. First operand has 76 states, 54 states have (on average 1.8333333333333333) internal successors, (99), 71 states have internal predecessors, (99), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:25,820 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2022-02-23 20:47:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 20:47:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:25,830 INFO L225 Difference]: With dead ends: 87 [2022-02-23 20:47:25,830 INFO L226 Difference]: Without dead ends: 69 [2022-02-23 20:47:25,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:25,834 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 126 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:25,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 89 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-23 20:47:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-02-23 20:47:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.4) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-02-23 20:47:25,864 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2022-02-23 20:47:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:25,865 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-02-23 20:47:25,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-02-23 20:47:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 20:47:25,866 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:25,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:25,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 20:47:25,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1220896562, now seen corresponding path program 1 times [2022-02-23 20:47:25,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:25,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81898049] [2022-02-23 20:47:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:25,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:25,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81898049] [2022-02-23 20:47:25,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81898049] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:25,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:25,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:25,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994021244] [2022-02-23 20:47:25,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:25,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:25,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:25,938 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:26,108 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-02-23 20:47:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 20:47:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 20:47:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:26,110 INFO L225 Difference]: With dead ends: 111 [2022-02-23 20:47:26,110 INFO L226 Difference]: Without dead ends: 109 [2022-02-23 20:47:26,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:26,112 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 70 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:26,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 218 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-23 20:47:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2022-02-23 20:47:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 63 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-02-23 20:47:26,121 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2022-02-23 20:47:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:26,121 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-02-23 20:47:26,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-02-23 20:47:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-23 20:47:26,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:26,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:26,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 20:47:26,122 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -807896157, now seen corresponding path program 1 times [2022-02-23 20:47:26,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:26,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815454253] [2022-02-23 20:47:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:26,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:26,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815454253] [2022-02-23 20:47:26,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815454253] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:26,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:26,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:26,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46250586] [2022-02-23 20:47:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:26,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:26,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:26,210 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:26,362 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-02-23 20:47:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:26,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-23 20:47:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:26,364 INFO L225 Difference]: With dead ends: 73 [2022-02-23 20:47:26,364 INFO L226 Difference]: Without dead ends: 71 [2022-02-23 20:47:26,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:26,366 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 47 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:26,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 128 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-23 20:47:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2022-02-23 20:47:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 66 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2022-02-23 20:47:26,374 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2022-02-23 20:47:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:26,374 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2022-02-23 20:47:26,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,375 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2022-02-23 20:47:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-23 20:47:26,377 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:26,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:26,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 20:47:26,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1000912364, now seen corresponding path program 1 times [2022-02-23 20:47:26,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:26,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592214289] [2022-02-23 20:47:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:26,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:26,465 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592214289] [2022-02-23 20:47:26,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592214289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:26,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:26,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:26,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981459225] [2022-02-23 20:47:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:26,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:26,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:26,467 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:26,597 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-02-23 20:47:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:26,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-23 20:47:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:26,601 INFO L225 Difference]: With dead ends: 71 [2022-02-23 20:47:26,601 INFO L226 Difference]: Without dead ends: 69 [2022-02-23 20:47:26,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:26,602 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 64 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:26,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 126 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-23 20:47:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-02-23 20:47:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-02-23 20:47:26,610 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2022-02-23 20:47:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:26,610 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-02-23 20:47:26,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-02-23 20:47:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-23 20:47:26,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:26,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:26,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-23 20:47:26,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1947612816, now seen corresponding path program 1 times [2022-02-23 20:47:26,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:26,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45028265] [2022-02-23 20:47:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:26,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:26,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45028265] [2022-02-23 20:47:26,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45028265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:26,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:26,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:26,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644917036] [2022-02-23 20:47:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:26,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:26,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:26,668 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:26,784 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-02-23 20:47:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-23 20:47:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:26,789 INFO L225 Difference]: With dead ends: 69 [2022-02-23 20:47:26,789 INFO L226 Difference]: Without dead ends: 67 [2022-02-23 20:47:26,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:26,791 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 62 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:26,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 120 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-23 20:47:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-02-23 20:47:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.34) internal successors, (67), 62 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-02-23 20:47:26,797 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2022-02-23 20:47:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:26,798 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-02-23 20:47:26,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-02-23 20:47:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 20:47:26,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:26,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:26,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-23 20:47:26,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash 963513474, now seen corresponding path program 1 times [2022-02-23 20:47:26,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:26,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720277629] [2022-02-23 20:47:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:26,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:26,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720277629] [2022-02-23 20:47:26,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720277629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:26,876 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:26,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:26,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819282147] [2022-02-23 20:47:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:26,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:26,877 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:26,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:26,877 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:26,964 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-02-23 20:47:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:26,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-23 20:47:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:26,965 INFO L225 Difference]: With dead ends: 67 [2022-02-23 20:47:26,966 INFO L226 Difference]: Without dead ends: 63 [2022-02-23 20:47:26,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:26,969 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:26,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 137 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-23 20:47:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-02-23 20:47:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 58 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-02-23 20:47:26,988 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 16 [2022-02-23 20:47:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-02-23 20:47:26,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-02-23 20:47:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 20:47:26,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:26,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:26,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-23 20:47:26,990 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash 246456422, now seen corresponding path program 1 times [2022-02-23 20:47:26,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:26,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420845210] [2022-02-23 20:47:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:27,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:27,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420845210] [2022-02-23 20:47:27,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420845210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:27,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:27,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:27,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016030218] [2022-02-23 20:47:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:27,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:27,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:27,055 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:27,133 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2022-02-23 20:47:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-23 20:47:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:27,134 INFO L225 Difference]: With dead ends: 63 [2022-02-23 20:47:27,135 INFO L226 Difference]: Without dead ends: 59 [2022-02-23 20:47:27,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:27,139 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:27,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 131 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-23 20:47:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-02-23 20:47:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-02-23 20:47:27,153 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 16 [2022-02-23 20:47:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:27,154 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-02-23 20:47:27,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-02-23 20:47:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 20:47:27,154 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:27,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:27,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-23 20:47:27,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 246488199, now seen corresponding path program 1 times [2022-02-23 20:47:27,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:27,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064167505] [2022-02-23 20:47:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:27,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:27,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064167505] [2022-02-23 20:47:27,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064167505] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:27,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:27,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:27,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234358785] [2022-02-23 20:47:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:27,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:27,232 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:27,371 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-02-23 20:47:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:27,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-23 20:47:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:27,372 INFO L225 Difference]: With dead ends: 96 [2022-02-23 20:47:27,372 INFO L226 Difference]: Without dead ends: 94 [2022-02-23 20:47:27,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:27,374 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 88 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:27,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 147 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-23 20:47:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 56. [2022-02-23 20:47:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 52 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-02-23 20:47:27,388 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2022-02-23 20:47:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:27,389 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-02-23 20:47:27,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-02-23 20:47:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 20:47:27,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:27,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:27,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-23 20:47:27,390 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -194897798, now seen corresponding path program 1 times [2022-02-23 20:47:27,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:27,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724817195] [2022-02-23 20:47:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:27,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:27,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724817195] [2022-02-23 20:47:27,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724817195] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:27,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:27,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:27,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374332595] [2022-02-23 20:47:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:27,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:27,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:27,475 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:27,584 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-02-23 20:47:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-23 20:47:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:27,585 INFO L225 Difference]: With dead ends: 74 [2022-02-23 20:47:27,585 INFO L226 Difference]: Without dead ends: 72 [2022-02-23 20:47:27,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:27,586 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:27,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 116 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-23 20:47:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-02-23 20:47:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-02-23 20:47:27,590 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2022-02-23 20:47:27,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:27,590 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-02-23 20:47:27,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-02-23 20:47:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 20:47:27,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:27,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-23 20:47:27,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash -194865986, now seen corresponding path program 1 times [2022-02-23 20:47:27,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:27,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678855823] [2022-02-23 20:47:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:27,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:27,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678855823] [2022-02-23 20:47:27,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678855823] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:27,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:27,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:27,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459693973] [2022-02-23 20:47:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:27,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:27,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:27,635 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:27,733 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-02-23 20:47:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-23 20:47:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:27,734 INFO L225 Difference]: With dead ends: 55 [2022-02-23 20:47:27,734 INFO L226 Difference]: Without dead ends: 53 [2022-02-23 20:47:27,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:27,735 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:27,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 90 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-23 20:47:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-02-23 20:47:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 48 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-02-23 20:47:27,739 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2022-02-23 20:47:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:27,739 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-02-23 20:47:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-02-23 20:47:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 20:47:27,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:27,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:27,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-23 20:47:27,741 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -948799137, now seen corresponding path program 1 times [2022-02-23 20:47:27,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:27,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610500185] [2022-02-23 20:47:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:27,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:27,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610500185] [2022-02-23 20:47:27,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610500185] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:27,843 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:27,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:27,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469753186] [2022-02-23 20:47:27,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:27,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:27,844 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:28,025 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2022-02-23 20:47:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:47:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-02-23 20:47:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:28,026 INFO L225 Difference]: With dead ends: 110 [2022-02-23 20:47:28,026 INFO L226 Difference]: Without dead ends: 108 [2022-02-23 20:47:28,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:47:28,027 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 79 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:28,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 233 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-02-23 20:47:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2022-02-23 20:47:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-02-23 20:47:28,032 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 17 [2022-02-23 20:47:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:28,032 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-02-23 20:47:28,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-02-23 20:47:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:47:28,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:28,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:28,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-23 20:47:28,033 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1746863154, now seen corresponding path program 1 times [2022-02-23 20:47:28,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:28,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469862642] [2022-02-23 20:47:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:28,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:28,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469862642] [2022-02-23 20:47:28,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469862642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:28,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:28,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:28,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974490278] [2022-02-23 20:47:28,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:28,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:28,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:28,107 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:28,245 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-02-23 20:47:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:47:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-23 20:47:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:28,248 INFO L225 Difference]: With dead ends: 98 [2022-02-23 20:47:28,248 INFO L226 Difference]: Without dead ends: 96 [2022-02-23 20:47:28,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:47:28,248 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 68 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:28,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 146 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-02-23 20:47:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62. [2022-02-23 20:47:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 58 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-02-23 20:47:28,254 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 18 [2022-02-23 20:47:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:28,254 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-02-23 20:47:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-02-23 20:47:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:47:28,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:28,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:28,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-23 20:47:28,255 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1746832336, now seen corresponding path program 1 times [2022-02-23 20:47:28,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:28,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667457444] [2022-02-23 20:47:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:28,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:28,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667457444] [2022-02-23 20:47:28,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667457444] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:28,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:28,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:28,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072028596] [2022-02-23 20:47:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:28,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:28,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:28,295 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:28,408 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2022-02-23 20:47:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:28,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-23 20:47:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:28,409 INFO L225 Difference]: With dead ends: 82 [2022-02-23 20:47:28,409 INFO L226 Difference]: Without dead ends: 80 [2022-02-23 20:47:28,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-23 20:47:28,410 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:28,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 108 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-23 20:47:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2022-02-23 20:47:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.28) internal successors, (64), 56 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-02-23 20:47:28,414 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 18 [2022-02-23 20:47:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:28,415 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-02-23 20:47:28,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-02-23 20:47:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:47:28,415 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:28,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:28,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-23 20:47:28,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1745876974, now seen corresponding path program 1 times [2022-02-23 20:47:28,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:28,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292235577] [2022-02-23 20:47:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:28,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:28,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292235577] [2022-02-23 20:47:28,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292235577] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:28,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:28,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:28,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88943397] [2022-02-23 20:47:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:28,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:28,494 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:28,614 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2022-02-23 20:47:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 20:47:28,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-23 20:47:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:28,615 INFO L225 Difference]: With dead ends: 76 [2022-02-23 20:47:28,615 INFO L226 Difference]: Without dead ends: 72 [2022-02-23 20:47:28,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:47:28,616 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:28,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 111 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-23 20:47:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2022-02-23 20:47:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 57 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-02-23 20:47:28,620 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 18 [2022-02-23 20:47:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:28,620 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-02-23 20:47:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-02-23 20:47:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:47:28,621 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:28,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:28,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-23 20:47:28,621 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 649803267, now seen corresponding path program 1 times [2022-02-23 20:47:28,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:28,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441313304] [2022-02-23 20:47:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:28,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:28,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441313304] [2022-02-23 20:47:28,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441313304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:28,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:28,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:28,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059570287] [2022-02-23 20:47:28,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:28,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:28,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:28,691 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:28,812 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-02-23 20:47:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 20:47:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-02-23 20:47:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:28,813 INFO L225 Difference]: With dead ends: 72 [2022-02-23 20:47:28,813 INFO L226 Difference]: Without dead ends: 70 [2022-02-23 20:47:28,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-23 20:47:28,814 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 72 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:28,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 96 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-23 20:47:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-02-23 20:47:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 60 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-02-23 20:47:28,819 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 18 [2022-02-23 20:47:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:28,819 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-02-23 20:47:28,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-02-23 20:47:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-23 20:47:28,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:28,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:28,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-23 20:47:28,820 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1682773732, now seen corresponding path program 1 times [2022-02-23 20:47:28,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:28,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970688380] [2022-02-23 20:47:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:28,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:28,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970688380] [2022-02-23 20:47:28,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970688380] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:28,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:28,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:28,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755668806] [2022-02-23 20:47:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:28,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:28,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:28,890 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:29,035 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-02-23 20:47:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:47:29,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-02-23 20:47:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:29,036 INFO L225 Difference]: With dead ends: 91 [2022-02-23 20:47:29,036 INFO L226 Difference]: Without dead ends: 89 [2022-02-23 20:47:29,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:47:29,037 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 52 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:29,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 168 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:29,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-02-23 20:47:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2022-02-23 20:47:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 63 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2022-02-23 20:47:29,041 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 19 [2022-02-23 20:47:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:29,042 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2022-02-23 20:47:29,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2022-02-23 20:47:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 20:47:29,042 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:29,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:29,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-23 20:47:29,043 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 596762259, now seen corresponding path program 1 times [2022-02-23 20:47:29,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:29,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423302761] [2022-02-23 20:47:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:29,086 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:29,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423302761] [2022-02-23 20:47:29,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423302761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:29,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:29,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:29,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919296795] [2022-02-23 20:47:29,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:29,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:29,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:29,088 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:29,153 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-02-23 20:47:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-02-23 20:47:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:29,155 INFO L225 Difference]: With dead ends: 67 [2022-02-23 20:47:29,155 INFO L226 Difference]: Without dead ends: 65 [2022-02-23 20:47:29,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:29,156 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 40 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:29,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 74 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:47:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-23 20:47:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-23 20:47:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 61 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-02-23 20:47:29,161 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 20 [2022-02-23 20:47:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:29,161 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-02-23 20:47:29,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-02-23 20:47:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-23 20:47:29,162 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:29,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:29,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-23 20:47:29,162 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1319762151, now seen corresponding path program 1 times [2022-02-23 20:47:29,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:29,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868089529] [2022-02-23 20:47:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:29,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:29,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868089529] [2022-02-23 20:47:29,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868089529] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:29,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:29,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 20:47:29,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234149521] [2022-02-23 20:47:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:29,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 20:47:29,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:29,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 20:47:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:47:29,209 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:29,279 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-02-23 20:47:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-02-23 20:47:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:29,280 INFO L225 Difference]: With dead ends: 65 [2022-02-23 20:47:29,280 INFO L226 Difference]: Without dead ends: 61 [2022-02-23 20:47:29,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:29,281 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:29,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:47:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-02-23 20:47:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-02-23 20:47:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 57 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-02-23 20:47:29,285 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 21 [2022-02-23 20:47:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:29,286 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-02-23 20:47:29,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-02-23 20:47:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 20:47:29,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:29,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:29,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-23 20:47:29,287 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2037098268, now seen corresponding path program 1 times [2022-02-23 20:47:29,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:29,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213721677] [2022-02-23 20:47:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:29,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:29,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213721677] [2022-02-23 20:47:29,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213721677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:29,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:29,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:29,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913388235] [2022-02-23 20:47:29,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:29,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:29,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:29,352 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:29,488 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-02-23 20:47:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:47:29,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-23 20:47:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:29,489 INFO L225 Difference]: With dead ends: 76 [2022-02-23 20:47:29,489 INFO L226 Difference]: Without dead ends: 74 [2022-02-23 20:47:29,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-02-23 20:47:29,490 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 78 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:29,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 67 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-23 20:47:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2022-02-23 20:47:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 52 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-02-23 20:47:29,496 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 22 [2022-02-23 20:47:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:29,496 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-02-23 20:47:29,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-02-23 20:47:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-23 20:47:29,496 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:29,497 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:29,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-23 20:47:29,497 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 319828265, now seen corresponding path program 1 times [2022-02-23 20:47:29,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:29,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351417869] [2022-02-23 20:47:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:29,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:29,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351417869] [2022-02-23 20:47:29,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351417869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:29,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100358231] [2022-02-23 20:47:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:29,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:29,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:29,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:47:29,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 20:47:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:29,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 20:47:29,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:29,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-23 20:47:30,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100358231] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:30,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:30,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-02-23 20:47:30,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344744393] [2022-02-23 20:47:30,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 20:47:30,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 20:47:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-23 20:47:30,041 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:30,316 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2022-02-23 20:47:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-23 20:47:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-23 20:47:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:30,317 INFO L225 Difference]: With dead ends: 102 [2022-02-23 20:47:30,317 INFO L226 Difference]: Without dead ends: 100 [2022-02-23 20:47:30,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-02-23 20:47:30,318 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 177 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:30,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 138 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-02-23 20:47:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 52. [2022-02-23 20:47:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 48 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-02-23 20:47:30,325 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 22 [2022-02-23 20:47:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:30,325 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-02-23 20:47:30,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-02-23 20:47:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 20:47:30,327 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:30,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:30,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 20:47:30,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:30,528 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1322547065, now seen corresponding path program 1 times [2022-02-23 20:47:30,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:30,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368374516] [2022-02-23 20:47:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:30,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:30,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368374516] [2022-02-23 20:47:30,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368374516] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:30,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349135804] [2022-02-23 20:47:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:30,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:30,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:47:30,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 20:47:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 20:47:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:30,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-23 20:47:30,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349135804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:30,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:30,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 14 [2022-02-23 20:47:30,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768455875] [2022-02-23 20:47:30,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:30,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 20:47:30,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 20:47:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-23 20:47:30,907 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:31,098 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2022-02-23 20:47:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-23 20:47:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-23 20:47:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:31,099 INFO L225 Difference]: With dead ends: 82 [2022-02-23 20:47:31,099 INFO L226 Difference]: Without dead ends: 80 [2022-02-23 20:47:31,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-02-23 20:47:31,100 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:31,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 97 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-02-23 20:47:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2022-02-23 20:47:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-02-23 20:47:31,105 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 23 [2022-02-23 20:47:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:31,105 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-02-23 20:47:31,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-02-23 20:47:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 20:47:31,105 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:31,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:31,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:31,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-02-23 20:47:31,331 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1198767470, now seen corresponding path program 1 times [2022-02-23 20:47:31,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:31,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737590384] [2022-02-23 20:47:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:31,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:31,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737590384] [2022-02-23 20:47:31,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737590384] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:31,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:31,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:31,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996674070] [2022-02-23 20:47:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:31,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:31,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:31,384 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:31,495 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-02-23 20:47:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:47:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-23 20:47:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:31,497 INFO L225 Difference]: With dead ends: 56 [2022-02-23 20:47:31,497 INFO L226 Difference]: Without dead ends: 54 [2022-02-23 20:47:31,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-02-23 20:47:31,498 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:31,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 53 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-02-23 20:47:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2022-02-23 20:47:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-02-23 20:47:31,503 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 23 [2022-02-23 20:47:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-02-23 20:47:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-02-23 20:47:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 20:47:31,503 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:31,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:31,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-23 20:47:31,504 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-02-23 20:47:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1199753650, now seen corresponding path program 1 times [2022-02-23 20:47:31,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:31,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998676587] [2022-02-23 20:47:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:31,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:31,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:31,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998676587] [2022-02-23 20:47:31,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998676587] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:31,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:31,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-23 20:47:31,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457648780] [2022-02-23 20:47:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:31,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-23 20:47:31,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-23 20:47:31,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-23 20:47:31,560 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:31,659 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-02-23 20:47:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 20:47:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-02-23 20:47:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:31,660 INFO L225 Difference]: With dead ends: 39 [2022-02-23 20:47:31,660 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 20:47:31,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-23 20:47:31,662 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:31,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 43 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:47:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 20:47:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 20:47:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-23 20:47:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 20:47:31,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-02-23 20:47:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:31,663 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 20:47:31,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:47:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 20:47:31,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 20:47:31,665 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (16 of 17 remaining) [2022-02-23 20:47:31,665 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12ASSERT_VIOLATIONERROR_FUNCTION (15 of 17 remaining) [2022-02-23 20:47:31,665 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (14 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13ASSERT_VIOLATIONERROR_FUNCTION (12 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (11 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14ASSERT_VIOLATIONERROR_FUNCTION (10 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr15ASSERT_VIOLATIONERROR_FUNCTION (9 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr16ASSERT_VIOLATIONERROR_FUNCTION (6 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 17 remaining) [2022-02-23 20:47:31,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8ASSERT_VIOLATIONERROR_FUNCTION (4 of 17 remaining) [2022-02-23 20:47:31,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11ASSERT_VIOLATIONERROR_FUNCTION (3 of 17 remaining) [2022-02-23 20:47:31,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9ASSERT_VIOLATIONERROR_FUNCTION (2 of 17 remaining) [2022-02-23 20:47:31,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ASSERT_VIOLATIONERROR_FUNCTION (1 of 17 remaining) [2022-02-23 20:47:31,667 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 17 remaining) [2022-02-23 20:47:31,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-23 20:47:31,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 20:50:03,100 WARN L232 SmtUtils]: Spent 2.51m on a formula simplification. DAG size of input: 78 DAG size of output: 78 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-23 20:50:35,653 WARN L232 SmtUtils]: Spent 32.42s on a formula simplification. DAG size of input: 91 DAG size of output: 92 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-02-23 20:50:36,355 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 20:50:36,355 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 20:50:36,356 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L854 garLoopResultBuilder]: At program point mainENTRY(lines 15 375) the Hoare annotation is: (and (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 374) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 369) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 15 375) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 368) no Hoare annotation was computed. [2022-02-23 20:50:36,356 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 15 375) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L854 garLoopResultBuilder]: At program point L328(lines 32 368) the Hoare annotation is: (or (and (let ((.cse2 (<= main_~main__t~0 1))) (let ((.cse0 (let ((.cse3 (not (= main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse2 .cse3) (and .cse3 (not (= main_~__VERIFIER_assert__cond~17 0)))))) (.cse1 (<= 1 main_~main__t~0))) (or (and (<= 1 main_~__VERIFIER_assert__cond~17) .cse0 .cse1) (and .cse2 .cse0 .cse1)))) (not (<= main_~main__tagbuf_len~0 main_~main__t~0))) (and (< main_~main__t~0 main_~main__tagbuf_len~0) (= main_~main__t~0 0))) [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 366) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 256) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L277(lines 277 364) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 254) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L279(line 279) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L854 garLoopResultBuilder]: At program point L357(lines 283 364) the Hoare annotation is: (and (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (let ((.cse1 (= main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= main_~__VERIFIER_assert__cond~13 0))) (.cse3 (<= 0 main_~main__t~0))) (or (and .cse2 .cse3 .cse1) (and .cse2 .cse3 (not (= main_~__VERIFIER_assert__cond~16 0))))))) (or (and (<= 1 main_~__VERIFIER_assert__cond~17) .cse0) (and .cse1 .cse0))))) [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2022-02-23 20:50:36,357 INFO L854 garLoopResultBuilder]: At program point L196(lines 60 254) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L289(lines 289 363) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L71(lines 71 95) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 252) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 318) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L325(lines 325 362) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L83(lines 83 93) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 210) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L216(lines 216 251) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L298(line 298) no Hoare annotation was computed. [2022-02-23 20:50:36,358 INFO L858 garLoopResultBuilder]: For program point L308(lines 308 316) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L337(lines 337 360) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L854 garLoopResultBuilder]: At program point L315(lines 32 368) the Hoare annotation is: (<= 0 main_~main__t~0) [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L113(lines 113 204) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L854 garLoopResultBuilder]: At program point L250(lines 102 252) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (not (= main_~__VERIFIER_assert__cond~0 0)) (not (<= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~main__t~0)) [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L223(lines 223 245) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L310(line 310) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L339(line 339) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point L349(lines 349 358) no Hoare annotation was computed. [2022-02-23 20:50:36,359 INFO L858 garLoopResultBuilder]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L125(lines 125 202) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 199) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L225(line 225) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 243) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L351(line 351) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L127(line 127) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 201) no Hoare annotation was computed. [2022-02-23 20:50:36,360 INFO L858 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 197) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L237(line 237) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L141(lines 141 163) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 161) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2022-02-23 20:50:36,361 INFO L858 garLoopResultBuilder]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2022-02-23 20:50:36,362 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2022-02-23 20:50:36,362 INFO L858 garLoopResultBuilder]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2022-02-23 20:50:36,364 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:36,365 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 20:50:36,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:50:36 BasicIcfg [2022-02-23 20:50:36,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 20:50:36,390 INFO L158 Benchmark]: Toolchain (without parser) took 191909.92ms. Allocated memory was 189.8MB in the beginning and 564.1MB in the end (delta: 374.3MB). Free memory was 129.5MB in the beginning and 227.5MB in the end (delta: -98.0MB). Peak memory consumption was 310.6MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,391 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 20:50:36,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.99ms. Allocated memory was 189.8MB in the beginning and 269.5MB in the end (delta: 79.7MB). Free memory was 162.0MB in the beginning and 235.0MB in the end (delta: -73.0MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,391 INFO L158 Benchmark]: Boogie Preprocessor took 25.86ms. Allocated memory is still 269.5MB. Free memory was 235.0MB in the beginning and 233.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,391 INFO L158 Benchmark]: RCFGBuilder took 380.14ms. Allocated memory is still 269.5MB. Free memory was 233.4MB in the beginning and 219.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,391 INFO L158 Benchmark]: IcfgTransformer took 26.08ms. Allocated memory is still 269.5MB. Free memory was 218.7MB in the beginning and 217.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,392 INFO L158 Benchmark]: TraceAbstraction took 191197.74ms. Allocated memory was 269.5MB in the beginning and 564.1MB in the end (delta: 294.6MB). Free memory was 216.6MB in the beginning and 227.5MB in the end (delta: -10.9MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. [2022-02-23 20:50:36,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 261.99ms. Allocated memory was 189.8MB in the beginning and 269.5MB in the end (delta: 79.7MB). Free memory was 162.0MB in the beginning and 235.0MB in the end (delta: -73.0MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.86ms. Allocated memory is still 269.5MB. Free memory was 235.0MB in the beginning and 233.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 380.14ms. Allocated memory is still 269.5MB. Free memory was 233.4MB in the beginning and 219.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * IcfgTransformer took 26.08ms. Allocated memory is still 269.5MB. Free memory was 218.7MB in the beginning and 217.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 191197.74ms. Allocated memory was 269.5MB in the beginning and 564.1MB in the end (delta: 294.6MB). Free memory was 216.6MB in the beginning and 227.5MB in the end (delta: -10.9MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: 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 - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 76 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 191.1s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 184.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1636 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1636 mSDsluCounter, 2733 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1700 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3268 IncrementalHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 1033 mSDtfsCounter, 3268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 10 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 194, 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, 23 MinimizatonAttempts, 365 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 189 HoareAnnotationTreeSize, 9 FomulaSimplifications, 222439 FormulaSimplificationTreeSizeReduction, 184.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3450178 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 456 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 2171 SizeOfPredicates, 6 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 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 - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && main__t <= main__tagbuf_len - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: !(main__tagbuf_len <= main__t) && ((1 <= __VERIFIER_assert__cond && (((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && main__t == 0) || ((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) || (main__t == 0 && (((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && main__t == 0) || ((!(__VERIFIER_assert__cond == 0) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0))))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((1 <= __VERIFIER_assert__cond && ((main__t <= 1 && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t) || ((main__t <= 1 && ((main__t <= 1 && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t)) && !(main__tagbuf_len <= main__t)) || (main__t < main__tagbuf_len && main__t == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 <= main__t - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && !(__VERIFIER_assert__cond == 0)) && !(main__tagbuf_len <= main__t)) && 1 <= main__t RESULT: Ultimate proved your program to be correct! [2022-02-23 20:50:36,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...