./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/dll-01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdf63a831807312c569006a76efbe1414243703d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 09:08:23,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:08:23,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:08:23,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:08:23,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:08:23,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:08:23,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:08:23,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:08:23,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:08:23,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:08:23,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:08:23,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:08:23,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:08:23,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:08:23,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:08:23,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:08:23,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:08:23,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:08:23,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:08:23,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:08:23,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:08:23,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:08:23,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:08:23,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:08:23,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:08:23,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:08:23,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:08:23,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:08:23,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:08:23,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:08:23,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:08:23,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:08:23,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:08:23,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:08:23,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:08:23,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:08:23,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:08:23,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:08:23,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:08:23,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:08:23,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:08:23,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:08:23,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:08:23,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:08:23,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:08:23,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:08:23,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:08:23,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:08:23,769 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:08:23,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:08:23,769 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:08:23,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:08:23,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:08:23,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:08:23,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:08:23,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:08:23,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:08:23,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:08:23,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:08:23,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:08:23,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:08:23,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:08:23,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:08:23,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:08:23,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:08:23,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:08:23,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:08:23,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf63a831807312c569006a76efbe1414243703d [2021-08-29 09:08:24,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:08:24,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:08:24,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:08:24,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:08:24,102 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:08:24,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-01-1.i [2021-08-29 09:08:24,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b5ed1de/979b1cad63df4743a294792a31266705/FLAG2c52617d9 [2021-08-29 09:08:24,665 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:08:24,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i [2021-08-29 09:08:24,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b5ed1de/979b1cad63df4743a294792a31266705/FLAG2c52617d9 [2021-08-29 09:08:25,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b5ed1de/979b1cad63df4743a294792a31266705 [2021-08-29 09:08:25,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:08:25,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:08:25,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:08:25,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:08:25,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:08:25,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e12aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25, skipping insertion in model container [2021-08-29 09:08:25,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:08:25,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:08:25,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-08-29 09:08:25,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-08-29 09:08:25,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-08-29 09:08:25,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-08-29 09:08:25,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-08-29 09:08:25,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-08-29 09:08:25,491 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-08-29 09:08:25,491 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-08-29 09:08:25,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-08-29 09:08:25,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-08-29 09:08:25,495 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-08-29 09:08:25,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-08-29 09:08:25,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-08-29 09:08:25,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:08:25,515 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:08:25,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-08-29 09:08:25,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-08-29 09:08:25,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-08-29 09:08:25,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-08-29 09:08:25,569 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-08-29 09:08:25,570 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-08-29 09:08:25,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-08-29 09:08:25,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-08-29 09:08:25,575 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-08-29 09:08:25,577 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-08-29 09:08:25,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-08-29 09:08:25,580 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-08-29 09:08:25,581 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-08-29 09:08:25,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:08:25,611 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:08:25,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25 WrapperNode [2021-08-29 09:08:25,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:08:25,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:08:25,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:08:25,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:08:25,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:08:25,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:08:25,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:08:25,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:08:25,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:08:25,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:08:25,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:08:25,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:08:25,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (1/1) ... [2021-08-29 09:08:25,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:08:25,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:08:25,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 09:08:25,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 09:08:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 09:08:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 09:08:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:08:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 09:08:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 09:08:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:08:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:08:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:08:26,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:08:26,087 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-29 09:08:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:08:26 BoogieIcfgContainer [2021-08-29 09:08:26,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:08:26,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:08:26,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:08:26,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:08:26,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:08:25" (1/3) ... [2021-08-29 09:08:26,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759ac43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:08:26, skipping insertion in model container [2021-08-29 09:08:26,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:08:25" (2/3) ... [2021-08-29 09:08:26,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759ac43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:08:26, skipping insertion in model container [2021-08-29 09:08:26,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:08:26" (3/3) ... [2021-08-29 09:08:26,095 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-08-29 09:08:26,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:08:26,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-08-29 09:08:26,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:08:26,157 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, mConcurrency=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 [2021-08-29 09:08:26,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-08-29 09:08:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-29 09:08:26,192 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:26,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-29 09:08:26,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2021-08-29 09:08:26,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:26,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366595759] [2021-08-29 09:08:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:26,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:26,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:26,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366595759] [2021-08-29 09:08:26,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366595759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:26,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:26,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:08:26,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687984503] [2021-08-29 09:08:26,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:08:26,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:08:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:26,448 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:26,682 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2021-08-29 09:08:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:08:26,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-29 09:08:26,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:26,701 INFO L225 Difference]: With dead ends: 180 [2021-08-29 09:08:26,701 INFO L226 Difference]: Without dead ends: 95 [2021-08-29 09:08:26,704 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:26,709 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.80ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:26,710 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 204.80ms Time] [2021-08-29 09:08:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-29 09:08:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2021-08-29 09:08:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-08-29 09:08:26,750 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2021-08-29 09:08:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:26,751 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-08-29 09:08:26,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-08-29 09:08:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:08:26,751 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:26,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:26,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:08:26,752 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2021-08-29 09:08:26,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:26,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378934382] [2021-08-29 09:08:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:26,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:26,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:26,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378934382] [2021-08-29 09:08:26,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378934382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:26,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:26,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:08:26,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586291820] [2021-08-29 09:08:26,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:08:26,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:08:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:26,819 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:27,000 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-08-29 09:08:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:08:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 09:08:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:27,002 INFO L225 Difference]: With dead ends: 80 [2021-08-29 09:08:27,002 INFO L226 Difference]: Without dead ends: 78 [2021-08-29 09:08:27,002 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:27,003 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.44ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:27,004 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 171 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 167.44ms Time] [2021-08-29 09:08:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-29 09:08:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-29 09:08:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-08-29 09:08:27,011 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2021-08-29 09:08:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:27,011 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-08-29 09:08:27,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-08-29 09:08:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:08:27,012 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:27,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:27,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 09:08:27,013 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:27,013 INFO L82 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2021-08-29 09:08:27,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:27,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72631150] [2021-08-29 09:08:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:27,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:27,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:27,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72631150] [2021-08-29 09:08:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72631150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:27,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:27,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:08:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100341035] [2021-08-29 09:08:27,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:08:27,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:08:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:27,074 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:27,322 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-08-29 09:08:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:08:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 09:08:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:27,323 INFO L225 Difference]: With dead ends: 79 [2021-08-29 09:08:27,323 INFO L226 Difference]: Without dead ends: 77 [2021-08-29 09:08:27,324 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.86ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:27,325 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.58ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:27,325 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 249 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 230.58ms Time] [2021-08-29 09:08:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-29 09:08:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-08-29 09:08:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-08-29 09:08:27,331 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2021-08-29 09:08:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:27,332 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-08-29 09:08:27,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-08-29 09:08:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:08:27,333 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:27,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:27,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 09:08:27,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2021-08-29 09:08:27,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:27,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228400551] [2021-08-29 09:08:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:27,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:27,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:27,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228400551] [2021-08-29 09:08:27,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228400551] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:27,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:27,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:08:27,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037087394] [2021-08-29 09:08:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:08:27,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:27,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:08:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:27,384 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:27,624 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2021-08-29 09:08:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:08:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 09:08:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:27,626 INFO L225 Difference]: With dead ends: 195 [2021-08-29 09:08:27,626 INFO L226 Difference]: Without dead ends: 128 [2021-08-29 09:08:27,626 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:08:27,627 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.90ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:27,628 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 216.90ms Time] [2021-08-29 09:08:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-29 09:08:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2021-08-29 09:08:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.303030303030303) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-08-29 09:08:27,640 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 15 [2021-08-29 09:08:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:27,640 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-08-29 09:08:27,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-08-29 09:08:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:08:27,642 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:27,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 09:08:27,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash 903272487, now seen corresponding path program 1 times [2021-08-29 09:08:27,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:27,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722982926] [2021-08-29 09:08:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:27,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:27,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:27,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722982926] [2021-08-29 09:08:27,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722982926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:27,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:27,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:08:27,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588069156] [2021-08-29 09:08:27,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:08:27,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:27,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:08:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:08:27,753 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:27,959 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2021-08-29 09:08:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 09:08:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 09:08:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:27,961 INFO L225 Difference]: With dead ends: 122 [2021-08-29 09:08:27,961 INFO L226 Difference]: Without dead ends: 118 [2021-08-29 09:08:27,962 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.87ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:08:27,963 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.07ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:27,963 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 181.07ms Time] [2021-08-29 09:08:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-29 09:08:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 73. [2021-08-29 09:08:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-08-29 09:08:27,969 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 15 [2021-08-29 09:08:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:27,970 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-08-29 09:08:27,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-08-29 09:08:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 09:08:27,970 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:27,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:27,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 09:08:27,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:27,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2021-08-29 09:08:27,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:27,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524570820] [2021-08-29 09:08:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:27,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:28,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:28,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524570820] [2021-08-29 09:08:28,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524570820] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:28,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:28,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:08:28,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86565203] [2021-08-29 09:08:28,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:08:28,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:08:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:28,032 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:28,182 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2021-08-29 09:08:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:08:28,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 09:08:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:28,184 INFO L225 Difference]: With dead ends: 132 [2021-08-29 09:08:28,185 INFO L226 Difference]: Without dead ends: 112 [2021-08-29 09:08:28,185 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:08:28,197 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.93ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:28,198 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 161 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 137.93ms Time] [2021-08-29 09:08:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-29 09:08:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2021-08-29 09:08:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-08-29 09:08:28,213 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2021-08-29 09:08:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:28,213 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-08-29 09:08:28,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-08-29 09:08:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 09:08:28,215 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:28,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:28,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 09:08:28,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:28,217 INFO L82 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2021-08-29 09:08:28,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:28,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814878998] [2021-08-29 09:08:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:28,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:28,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:28,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814878998] [2021-08-29 09:08:28,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814878998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:28,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:28,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:08:28,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683459971] [2021-08-29 09:08:28,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:08:28,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:08:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:28,251 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:28,386 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2021-08-29 09:08:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:08:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-29 09:08:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:28,387 INFO L225 Difference]: With dead ends: 137 [2021-08-29 09:08:28,387 INFO L226 Difference]: Without dead ends: 96 [2021-08-29 09:08:28,388 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:28,388 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.71ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:28,389 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 128.71ms Time] [2021-08-29 09:08:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-29 09:08:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2021-08-29 09:08:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-08-29 09:08:28,393 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2021-08-29 09:08:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:28,394 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-08-29 09:08:28,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-08-29 09:08:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 09:08:28,395 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:28,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:28,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 09:08:28,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2021-08-29 09:08:28,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:28,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533835092] [2021-08-29 09:08:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:28,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:28,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:28,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533835092] [2021-08-29 09:08:28,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533835092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:28,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:28,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:08:28,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454215229] [2021-08-29 09:08:28,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:08:28,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:08:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:28,440 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:28,550 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-08-29 09:08:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:08:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-29 09:08:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:28,555 INFO L225 Difference]: With dead ends: 75 [2021-08-29 09:08:28,555 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 09:08:28,555 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:28,556 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.76ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:28,556 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 99.76ms Time] [2021-08-29 09:08:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 09:08:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-29 09:08:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-08-29 09:08:28,568 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2021-08-29 09:08:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:28,568 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-08-29 09:08:28,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-08-29 09:08:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 09:08:28,569 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:28,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:28,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 09:08:28,570 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2021-08-29 09:08:28,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:28,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154186399] [2021-08-29 09:08:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:28,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:28,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:28,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154186399] [2021-08-29 09:08:28,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154186399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:28,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:28,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:08:28,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593470326] [2021-08-29 09:08:28,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:08:28,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:08:28,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:28,641 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:28,775 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-08-29 09:08:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:08:28,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-29 09:08:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:28,776 INFO L225 Difference]: With dead ends: 74 [2021-08-29 09:08:28,776 INFO L226 Difference]: Without dead ends: 72 [2021-08-29 09:08:28,776 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.05ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:08:28,776 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.64ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:28,777 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 219 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 127.64ms Time] [2021-08-29 09:08:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-29 09:08:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-08-29 09:08:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-08-29 09:08:28,780 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2021-08-29 09:08:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:28,780 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-08-29 09:08:28,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-08-29 09:08:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 09:08:28,781 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:28,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:28,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 09:08:28,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:28,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2021-08-29 09:08:28,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:28,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158909061] [2021-08-29 09:08:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:28,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:28,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:28,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158909061] [2021-08-29 09:08:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158909061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:28,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:28,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 09:08:28,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56971263] [2021-08-29 09:08:28,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 09:08:28,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 09:08:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:08:28,865 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:29,151 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2021-08-29 09:08:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 09:08:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 09:08:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:29,153 INFO L225 Difference]: With dead ends: 175 [2021-08-29 09:08:29,153 INFO L226 Difference]: Without dead ends: 133 [2021-08-29 09:08:29,153 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 63.27ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-29 09:08:29,154 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.70ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:29,154 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 344 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [14 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 234.70ms Time] [2021-08-29 09:08:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-29 09:08:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2021-08-29 09:08:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-08-29 09:08:29,159 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2021-08-29 09:08:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-08-29 09:08:29,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-08-29 09:08:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 09:08:29,160 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:29,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:29,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 09:08:29,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:29,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2021-08-29 09:08:29,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:29,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734979337] [2021-08-29 09:08:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:29,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:08:29,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:29,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734979337] [2021-08-29 09:08:29,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734979337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:29,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:29,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 09:08:29,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125971616] [2021-08-29 09:08:29,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 09:08:29,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 09:08:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:08:29,322 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:29,884 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2021-08-29 09:08:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 09:08:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 09:08:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:29,887 INFO L225 Difference]: With dead ends: 234 [2021-08-29 09:08:29,887 INFO L226 Difference]: Without dead ends: 232 [2021-08-29 09:08:29,887 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 147.28ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:08:29,888 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 243 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 425.88ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:29,888 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 0 Invalid, 646 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [19 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 425.88ms Time] [2021-08-29 09:08:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-08-29 09:08:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2021-08-29 09:08:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-08-29 09:08:29,893 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2021-08-29 09:08:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:29,893 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-08-29 09:08:29,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-08-29 09:08:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 09:08:29,894 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:29,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:29,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 09:08:29,895 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:29,895 INFO L82 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2021-08-29 09:08:29,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:29,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464261713] [2021-08-29 09:08:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:29,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 09:08:29,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:29,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464261713] [2021-08-29 09:08:29,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464261713] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:29,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:29,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:08:29,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40012863] [2021-08-29 09:08:29,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:08:29,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:08:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:08:29,965 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:30,144 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-08-29 09:08:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:08:30,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-29 09:08:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:30,145 INFO L225 Difference]: With dead ends: 139 [2021-08-29 09:08:30,145 INFO L226 Difference]: Without dead ends: 121 [2021-08-29 09:08:30,146 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.80ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:08:30,146 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.18ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:30,147 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 257 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 163.18ms Time] [2021-08-29 09:08:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-29 09:08:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2021-08-29 09:08:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2021-08-29 09:08:30,152 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2021-08-29 09:08:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:30,152 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2021-08-29 09:08:30,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2021-08-29 09:08:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 09:08:30,153 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:30,153 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:30,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 09:08:30,153 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:30,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2021-08-29 09:08:30,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:30,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195835975] [2021-08-29 09:08:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:30,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:08:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 09:08:30,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:08:30,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195835975] [2021-08-29 09:08:30,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195835975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:08:30,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:08:30,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:08:30,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976866031] [2021-08-29 09:08:30,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:08:30,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:08:30,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:08:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:30,178 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:08:30,266 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2021-08-29 09:08:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:08:30,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-29 09:08:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:08:30,267 INFO L225 Difference]: With dead ends: 113 [2021-08-29 09:08:30,267 INFO L226 Difference]: Without dead ends: 111 [2021-08-29 09:08:30,268 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:08:30,269 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.78ms IncrementalHoareTripleChecker+Time [2021-08-29 09:08:30,269 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 81.78ms Time] [2021-08-29 09:08:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-29 09:08:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-08-29 09:08:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-08-29 09:08:30,275 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2021-08-29 09:08:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:08:30,275 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-08-29 09:08:30,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 09:08:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-08-29 09:08:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 09:08:30,278 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:08:30,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:08:30,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 09:08:30,279 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:08:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:08:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2021-08-29 09:08:30,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:08:30,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541969794] [2021-08-29 09:08:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:08:30,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:08:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:08:30,307 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:08:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:08:30,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:08:30,352 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:08:30,353 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (12 of 13 remaining) [2021-08-29 09:08:30,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2021-08-29 09:08:30,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2021-08-29 09:08:30,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2021-08-29 09:08:30,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2021-08-29 09:08:30,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2021-08-29 09:08:30,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 09:08:30,361 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:08:30,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:08:30 BoogieIcfgContainer [2021-08-29 09:08:30,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:08:30,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:08:30,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:08:30,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:08:30,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:08:26" (3/4) ... [2021-08-29 09:08:30,393 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:08:30,423 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:08:30,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:08:30,424 INFO L158 Benchmark]: Toolchain (without parser) took 5273.09ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 37.2MB in the beginning and 70.0MB in the end (delta: -32.8MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,424 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:08:30,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.62ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 33.5MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.11ms. Allocated memory is still 60.8MB. Free memory was 33.5MB in the beginning and 31.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,425 INFO L158 Benchmark]: Boogie Preprocessor took 65.45ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 31.1MB in the beginning and 59.4MB in the end (delta: -28.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,425 INFO L158 Benchmark]: RCFGBuilder took 339.84ms. Allocated memory is still 77.6MB. Free memory was 59.1MB in the beginning and 43.2MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,425 INFO L158 Benchmark]: TraceAbstraction took 4300.33ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 42.9MB in the beginning and 72.1MB in the end (delta: -29.2MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,426 INFO L158 Benchmark]: Witness Printer took 32.09ms. Allocated memory is still 94.4MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:08:30,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.62ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 33.5MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.11ms. Allocated memory is still 60.8MB. Free memory was 33.5MB in the beginning and 31.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.45ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 31.1MB in the beginning and 59.4MB in the end (delta: -28.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * RCFGBuilder took 339.84ms. Allocated memory is still 77.6MB. Free memory was 59.1MB in the beginning and 43.2MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4300.33ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 42.9MB in the beginning and 72.1MB in the end (delta: -29.2MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Witness Printer took 32.09ms. Allocated memory is still 94.4MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1040]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) [L1005] list->prev = ((void*)0) [L1006] COND FALSE !(!(list != ((void*)0))) [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] reach_error() - UnprovableResult [Line: 1006]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 4208.27ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 33.30ms, AutomataDifference: 2884.77ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.16ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 961 SdHoareTripleChecker+Valid, 2400.37ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 961 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1929.48ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1380 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2976 IncrementalHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 0 mSDtfsCounter, 2976 mSolverCounterSat, 19.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 319.71ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=12, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 108.60ms AutomataMinimizationTime, 13 MinimizatonAttempts, 377 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.77ms SsaConstructionTime, 191.07ms SatisfiabilityAnalysisTime, 655.22ms InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 1501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 09:08:30,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...