./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-01-2.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/sll-01-2.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 2ea18b6ba0d977117db11fbdff34c486def646c3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:12:15,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 09:12:15,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 09:12:15,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 09:12:15,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 09:12:15,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 09:12:15,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 09:12:15,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 09:12:15,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 09:12:15,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 09:12:15,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 09:12:15,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 09:12:15,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 09:12:15,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 09:12:15,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 09:12:15,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 09:12:15,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 09:12:15,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 09:12:15,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 09:12:15,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 09:12:15,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 09:12:15,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 09:12:15,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 09:12:15,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 09:12:15,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 09:12:15,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 09:12:15,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 09:12:15,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 09:12:15,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 09:12:15,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 09:12:15,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 09:12:15,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 09:12:15,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 09:12:15,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 09:12:15,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 09:12:15,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 09:12:15,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 09:12:15,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 09:12:15,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 09:12:15,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 09:12:15,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 09:12:15,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 09:12:15,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 09:12:15,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 09:12:15,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 09:12:15,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 09:12:15,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 09:12:15,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 09:12:15,391 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 09:12:15,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 09:12:15,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 09:12:15,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 09:12:15,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 09:12:15,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 09:12:15,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 09:12:15,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:12:15,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 09:12:15,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 09:12:15,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 09:12:15,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 09:12:15,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 09:12:15,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 09:12:15,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 09:12:15,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ea18b6ba0d977117db11fbdff34c486def646c3 [2021-08-29 09:12:15,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 09:12:15,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 09:12:15,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 09:12:15,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 09:12:15,693 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 09:12:15,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-2.i [2021-08-29 09:12:15,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9adf74334/1c8c1f24f26f4758b67d3d6554e0b994/FLAGdac3ea70e [2021-08-29 09:12:16,166 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 09:12:16,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i [2021-08-29 09:12:16,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9adf74334/1c8c1f24f26f4758b67d3d6554e0b994/FLAGdac3ea70e [2021-08-29 09:12:16,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9adf74334/1c8c1f24f26f4758b67d3d6554e0b994 [2021-08-29 09:12:16,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 09:12:16,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 09:12:16,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 09:12:16,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 09:12:16,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 09:12:16,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49511624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16, skipping insertion in model container [2021-08-29 09:12:16,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 09:12:16,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 09:12:16,373 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/sll-01-2.i[22034,22047] [2021-08-29 09:12:16,386 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/sll-01-2.i[22307,22320] [2021-08-29 09:12:16,389 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/sll-01-2.i[22516,22529] [2021-08-29 09:12:16,390 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/sll-01-2.i[22586,22599] [2021-08-29 09:12:16,392 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/sll-01-2.i[22853,22866] [2021-08-29 09:12:16,393 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/sll-01-2.i[22961,22974] [2021-08-29 09:12:16,397 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/sll-01-2.i[23192,23205] [2021-08-29 09:12:16,398 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/sll-01-2.i[23272,23285] [2021-08-29 09:12:16,399 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/sll-01-2.i[23351,23364] [2021-08-29 09:12:16,401 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/sll-01-2.i[23484,23497] [2021-08-29 09:12:16,402 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/sll-01-2.i[23662,23675] [2021-08-29 09:12:16,403 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/sll-01-2.i[23740,23753] [2021-08-29 09:12:16,404 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/sll-01-2.i[23817,23830] [2021-08-29 09:12:16,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:12:16,419 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 09:12:16,451 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/sll-01-2.i[22034,22047] [2021-08-29 09:12:16,462 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/sll-01-2.i[22307,22320] [2021-08-29 09:12:16,464 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/sll-01-2.i[22516,22529] [2021-08-29 09:12:16,465 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/sll-01-2.i[22586,22599] [2021-08-29 09:12:16,467 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/sll-01-2.i[22853,22866] [2021-08-29 09:12:16,469 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/sll-01-2.i[22961,22974] [2021-08-29 09:12:16,472 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/sll-01-2.i[23192,23205] [2021-08-29 09:12:16,472 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/sll-01-2.i[23272,23285] [2021-08-29 09:12:16,474 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/sll-01-2.i[23351,23364] [2021-08-29 09:12:16,476 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/sll-01-2.i[23484,23497] [2021-08-29 09:12:16,477 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/sll-01-2.i[23662,23675] [2021-08-29 09:12:16,479 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/sll-01-2.i[23740,23753] [2021-08-29 09:12:16,479 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/sll-01-2.i[23817,23830] [2021-08-29 09:12:16,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 09:12:16,506 INFO L208 MainTranslator]: Completed translation [2021-08-29 09:12:16,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16 WrapperNode [2021-08-29 09:12:16,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 09:12:16,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 09:12:16,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 09:12:16,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 09:12:16,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 09:12:16,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 09:12:16,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 09:12:16,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 09:12:16,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 09:12:16,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 09:12:16,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 09:12:16,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 09:12:16,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (1/1) ... [2021-08-29 09:12:16,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 09:12:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:12:16,610 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 09:12:16,635 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 09:12:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 09:12:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 09:12:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 09:12:16,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 09:12:16,941 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-29 09:12:16,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:12:16 BoogieIcfgContainer [2021-08-29 09:12:16,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 09:12:16,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 09:12:16,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 09:12:16,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 09:12:16,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:12:16" (1/3) ... [2021-08-29 09:12:16,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f56e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:12:16, skipping insertion in model container [2021-08-29 09:12:16,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:12:16" (2/3) ... [2021-08-29 09:12:16,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f56e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:12:16, skipping insertion in model container [2021-08-29 09:12:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:12:16" (3/3) ... [2021-08-29 09:12:16,948 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-08-29 09:12:16,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 09:12:16,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-08-29 09:12:16,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 09:12:16,987 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 09:12:16,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-08-29 09:12:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 70 states have (on average 1.957142857142857) internal successors, (137), 83 states have internal predecessors, (137), 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 09:12:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-29 09:12:17,001 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:17,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-29 09:12:17,002 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 09:12:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2021-08-29 09:12:17,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:17,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639441498] [2021-08-29 09:12:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:17,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:17,139 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 09:12:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:17,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639441498] [2021-08-29 09:12:17,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639441498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:17,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:17,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:17,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916087914] [2021-08-29 09:12:17,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:17,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,172 INFO L87 Difference]: Start difference. First operand has 84 states, 70 states have (on average 1.957142857142857) internal successors, (137), 83 states have internal predecessors, (137), 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 09:12:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:17,347 INFO L93 Difference]: Finished difference Result 182 states and 300 transitions. [2021-08-29 09:12:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:17,349 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 09:12:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:17,355 INFO L225 Difference]: With dead ends: 182 [2021-08-29 09:12:17,355 INFO L226 Difference]: Without dead ends: 96 [2021-08-29 09:12:17,358 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,361 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.20ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:17,362 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 134.20ms Time] [2021-08-29 09:12:17,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-29 09:12:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2021-08-29 09:12:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 77 states have internal predecessors, (88), 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 09:12:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-08-29 09:12:17,402 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 4 [2021-08-29 09:12:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:17,403 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-08-29 09:12:17,404 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 09:12:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-08-29 09:12:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:12:17,404 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:17,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:17,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 09:12:17,405 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 09:12:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2021-08-29 09:12:17,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:17,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231126275] [2021-08-29 09:12:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:17,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:17,441 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 09:12:17,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:17,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231126275] [2021-08-29 09:12:17,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231126275] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:17,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:17,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:17,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083476843] [2021-08-29 09:12:17,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:17,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,443 INFO L87 Difference]: Start difference. First operand 78 states and 88 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 09:12:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:17,563 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2021-08-29 09:12:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:17,563 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 09:12:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:17,564 INFO L225 Difference]: With dead ends: 81 [2021-08-29 09:12:17,564 INFO L226 Difference]: Without dead ends: 79 [2021-08-29 09:12:17,565 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,566 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.62ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:17,566 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 111.62ms Time] [2021-08-29 09:12:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-29 09:12:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-08-29 09:12:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.328358208955224) internal successors, (89), 78 states have internal predecessors, (89), 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 09:12:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2021-08-29 09:12:17,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 10 [2021-08-29 09:12:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:17,571 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2021-08-29 09:12:17,571 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 09:12:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2021-08-29 09:12:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 09:12:17,572 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:17,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:17,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 09:12:17,572 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 09:12:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2021-08-29 09:12:17,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:17,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404360546] [2021-08-29 09:12:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:17,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:17,621 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 09:12:17,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:17,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404360546] [2021-08-29 09:12:17,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404360546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:17,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:17,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:12:17,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236855990] [2021-08-29 09:12:17,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:12:17,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:17,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:12:17,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:17,624 INFO L87 Difference]: Start difference. First operand 79 states and 89 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 09:12:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:17,767 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-08-29 09:12:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:12:17,768 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 09:12:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:17,768 INFO L225 Difference]: With dead ends: 80 [2021-08-29 09:12:17,769 INFO L226 Difference]: Without dead ends: 78 [2021-08-29 09:12:17,769 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:17,769 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.48ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:17,770 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 133.48ms Time] [2021-08-29 09:12:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-29 09:12:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-08-29 09:12:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.323076923076923) internal successors, (86), 75 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 09:12:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-08-29 09:12:17,774 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 10 [2021-08-29 09:12:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:17,774 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-08-29 09:12:17,774 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 09:12:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-08-29 09:12:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 09:12:17,774 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:17,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:17,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 09:12:17,775 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 09:12:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2021-08-29 09:12:17,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:17,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511975354] [2021-08-29 09:12:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:17,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:17,810 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 09:12:17,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:17,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511975354] [2021-08-29 09:12:17,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511975354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:17,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:17,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:17,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58346480] [2021-08-29 09:12:17,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:17,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,812 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 09:12:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:17,911 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-08-29 09:12:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 09:12:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:17,913 INFO L225 Difference]: With dead ends: 79 [2021-08-29 09:12:17,913 INFO L226 Difference]: Without dead ends: 75 [2021-08-29 09:12:17,914 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:17,916 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.64ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:17,918 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 93.64ms Time] [2021-08-29 09:12:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-29 09:12:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-08-29 09:12:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 71 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 09:12:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-08-29 09:12:17,934 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 15 [2021-08-29 09:12:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-08-29 09:12:17,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 09:12:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-08-29 09:12:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 09:12:17,935 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:17,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:17,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 09:12:17,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:17,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1551589151, now seen corresponding path program 1 times [2021-08-29 09:12:17,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:17,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885486926] [2021-08-29 09:12:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:17,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:17,987 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 09:12:17,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:17,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885486926] [2021-08-29 09:12:17,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885486926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:17,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:17,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:12:17,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397224528] [2021-08-29 09:12:17,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:12:17,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:12:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:17,988 INFO L87 Difference]: Start difference. First operand 72 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 09:12:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:18,157 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2021-08-29 09:12:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:12:18,157 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 09:12:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:18,158 INFO L225 Difference]: With dead ends: 190 [2021-08-29 09:12:18,158 INFO L226 Difference]: Without dead ends: 126 [2021-08-29 09:12:18,158 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:12:18,159 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.63ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:18,159 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 155.63ms Time] [2021-08-29 09:12:18,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-29 09:12:18,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2021-08-29 09:12:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 73 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 09:12:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2021-08-29 09:12:18,163 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 16 [2021-08-29 09:12:18,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:18,163 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2021-08-29 09:12:18,163 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 09:12:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2021-08-29 09:12:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 09:12:18,164 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:18,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:18,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 09:12:18,165 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 09:12:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2021-08-29 09:12:18,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:18,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716646483] [2021-08-29 09:12:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:18,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:18,195 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 09:12:18,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:18,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716646483] [2021-08-29 09:12:18,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716646483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:18,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:18,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:12:18,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827967975] [2021-08-29 09:12:18,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:12:18,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:18,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:12:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:18,197 INFO L87 Difference]: Start difference. First operand 74 states and 84 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 09:12:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:18,317 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2021-08-29 09:12:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:12:18,317 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 09:12:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:18,318 INFO L225 Difference]: With dead ends: 134 [2021-08-29 09:12:18,318 INFO L226 Difference]: Without dead ends: 114 [2021-08-29 09:12:18,319 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:12:18,321 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.41ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:18,322 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 165 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 109.41ms Time] [2021-08-29 09:12:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-29 09:12:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2021-08-29 09:12:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.2769230769230768) 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 09:12:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-08-29 09:12:18,329 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 16 [2021-08-29 09:12:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:18,330 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-08-29 09:12:18,330 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 09:12:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-08-29 09:12:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 09:12:18,330 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:18,331 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 09:12:18,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 09:12:18,331 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 09:12:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash -940628020, now seen corresponding path program 1 times [2021-08-29 09:12:18,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:18,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853136266] [2021-08-29 09:12:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:18,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:18,368 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 09:12:18,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:18,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853136266] [2021-08-29 09:12:18,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853136266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:18,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:18,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:18,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256303831] [2021-08-29 09:12:18,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:18,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:18,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:18,370 INFO L87 Difference]: Start difference. First operand 73 states and 83 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 09:12:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:18,478 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2021-08-29 09:12:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:18,478 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 09:12:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:18,479 INFO L225 Difference]: With dead ends: 139 [2021-08-29 09:12:18,479 INFO L226 Difference]: Without dead ends: 97 [2021-08-29 09:12:18,480 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:18,481 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.31ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:18,481 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 161 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 100.31ms Time] [2021-08-29 09:12:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-29 09:12:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2021-08-29 09:12:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 75 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 09:12:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-08-29 09:12:18,497 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 20 [2021-08-29 09:12:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:18,497 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-08-29 09:12:18,497 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 09:12:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-08-29 09:12:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 09:12:18,497 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:18,497 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 09:12:18,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 09:12:18,498 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 09:12:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2021-08-29 09:12:18,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:18,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537413511] [2021-08-29 09:12:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:18,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:18,520 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 09:12:18,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:18,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537413511] [2021-08-29 09:12:18,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537413511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:18,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:18,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:18,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49430777] [2021-08-29 09:12:18,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:18,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:18,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:18,522 INFO L87 Difference]: Start difference. First operand 76 states and 87 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 09:12:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:18,607 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2021-08-29 09:12:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:18,608 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 09:12:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:18,609 INFO L225 Difference]: With dead ends: 76 [2021-08-29 09:12:18,609 INFO L226 Difference]: Without dead ends: 74 [2021-08-29 09:12:18,609 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:18,610 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.19ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:18,610 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 141 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 78.19ms Time] [2021-08-29 09:12:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-29 09:12:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-29 09:12:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 73 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 09:12:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-08-29 09:12:18,612 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 21 [2021-08-29 09:12:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:18,612 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-08-29 09:12:18,613 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 09:12:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-08-29 09:12:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 09:12:18,613 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:18,613 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 09:12:18,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 09:12:18,613 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 09:12:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2021-08-29 09:12:18,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:18,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720348748] [2021-08-29 09:12:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:18,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:18,646 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 09:12:18,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:18,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720348748] [2021-08-29 09:12:18,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720348748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:18,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:18,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 09:12:18,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423656278] [2021-08-29 09:12:18,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 09:12:18,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:18,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 09:12:18,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:18,647 INFO L87 Difference]: Start difference. First operand 74 states and 85 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 09:12:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:18,724 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2021-08-29 09:12:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 09:12:18,724 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 09:12:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:18,725 INFO L225 Difference]: With dead ends: 75 [2021-08-29 09:12:18,725 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 09:12:18,725 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.06ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 09:12:18,725 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.30ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:18,725 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.38ms Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 72.30ms Time] [2021-08-29 09:12:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 09:12:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-08-29 09:12:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 71 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 09:12:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-08-29 09:12:18,728 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 23 [2021-08-29 09:12:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:18,728 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-08-29 09:12:18,728 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 09:12:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-08-29 09:12:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 09:12:18,729 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:18,729 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 09:12:18,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 09:12:18,729 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 09:12:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:18,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2021-08-29 09:12:18,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:18,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015291038] [2021-08-29 09:12:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:18,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:18,787 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 09:12:18,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:18,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015291038] [2021-08-29 09:12:18,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015291038] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:18,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:18,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 09:12:18,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064070399] [2021-08-29 09:12:18,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 09:12:18,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 09:12:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:12:18,789 INFO L87 Difference]: Start difference. First operand 72 states and 83 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 09:12:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:19,070 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2021-08-29 09:12:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 09:12:19,070 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 09:12:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:19,071 INFO L225 Difference]: With dead ends: 178 [2021-08-29 09:12:19,071 INFO L226 Difference]: Without dead ends: 135 [2021-08-29 09:12:19,071 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.44ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-29 09:12:19,071 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.11ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:19,072 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [10 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 246.11ms Time] [2021-08-29 09:12:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-29 09:12:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 82. [2021-08-29 09:12:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.236842105263158) internal successors, (94), 81 states have internal predecessors, (94), 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 09:12:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-08-29 09:12:19,074 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 24 [2021-08-29 09:12:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:19,075 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-08-29 09:12:19,075 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 09:12:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-08-29 09:12:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 09:12:19,075 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:19,075 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 09:12:19,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 09:12:19,076 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 09:12:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2021-08-29 09:12:19,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:19,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272860955] [2021-08-29 09:12:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:19,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:19,242 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 09:12:19,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:19,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272860955] [2021-08-29 09:12:19,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272860955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:19,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:19,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 09:12:19,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697304204] [2021-08-29 09:12:19,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 09:12:19,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 09:12:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:12:19,244 INFO L87 Difference]: Start difference. First operand 82 states and 94 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 09:12:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:19,744 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2021-08-29 09:12:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 09:12:19,744 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 09:12:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:19,746 INFO L225 Difference]: With dead ends: 237 [2021-08-29 09:12:19,746 INFO L226 Difference]: Without dead ends: 235 [2021-08-29 09:12:19,747 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 114.29ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:12:19,747 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 319.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 390.22ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:19,747 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 658 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [19 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 390.22ms Time] [2021-08-29 09:12:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-08-29 09:12:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 94. [2021-08-29 09:12:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 93 states have internal predecessors, (108), 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 09:12:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2021-08-29 09:12:19,754 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 24 [2021-08-29 09:12:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:19,754 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2021-08-29 09:12:19,754 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 09:12:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2021-08-29 09:12:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 09:12:19,755 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:19,755 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 09:12:19,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 09:12:19,755 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 09:12:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:19,756 INFO L82 PathProgramCache]: Analyzing trace with hash -545310703, now seen corresponding path program 1 times [2021-08-29 09:12:19,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:19,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662714779] [2021-08-29 09:12:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:19,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:19,827 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 09:12:19,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:19,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662714779] [2021-08-29 09:12:19,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662714779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:19,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:19,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:12:19,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195748484] [2021-08-29 09:12:19,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:12:19,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:12:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:12:19,828 INFO L87 Difference]: Start difference. First operand 94 states and 108 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 09:12:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:19,971 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-08-29 09:12:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:12:19,971 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 09:12:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:19,972 INFO L225 Difference]: With dead ends: 141 [2021-08-29 09:12:19,972 INFO L226 Difference]: Without dead ends: 123 [2021-08-29 09:12:19,972 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.71ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:12:19,973 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.14ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:19,973 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 267 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [10 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 127.14ms Time] [2021-08-29 09:12:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-29 09:12:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2021-08-29 09:12:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 114 states have internal predecessors, (137), 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 09:12:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2021-08-29 09:12:19,977 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 26 [2021-08-29 09:12:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:19,977 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2021-08-29 09:12:19,977 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 09:12:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2021-08-29 09:12:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 09:12:19,978 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:19,978 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 09:12:19,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 09:12:19,978 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 09:12:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1566334865, now seen corresponding path program 1 times [2021-08-29 09:12:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:19,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433116258] [2021-08-29 09:12:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:19,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:19,997 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 09:12:19,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:19,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433116258] [2021-08-29 09:12:19,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433116258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:19,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:19,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:19,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559410381] [2021-08-29 09:12:19,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:19,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:19,999 INFO L87 Difference]: Start difference. First operand 115 states and 137 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 09:12:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:20,093 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2021-08-29 09:12:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:20,093 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 09:12:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:20,094 INFO L225 Difference]: With dead ends: 115 [2021-08-29 09:12:20,094 INFO L226 Difference]: Without dead ends: 113 [2021-08-29 09:12:20,094 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:20,097 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.31ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:20,097 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 70.31ms Time] [2021-08-29 09:12:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-29 09:12:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-29 09:12:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.25) internal successors, (135), 112 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 09:12:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-08-29 09:12:20,102 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 26 [2021-08-29 09:12:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:20,102 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-08-29 09:12:20,103 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 09:12:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2021-08-29 09:12:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 09:12:20,107 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:20,107 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 09:12:20,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 09:12:20,108 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 09:12:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:20,108 INFO L82 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2021-08-29 09:12:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:20,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853632948] [2021-08-29 09:12:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:20,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:20,224 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 09:12:20,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:20,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853632948] [2021-08-29 09:12:20,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853632948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:20,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:20,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 09:12:20,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306585034] [2021-08-29 09:12:20,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 09:12:20,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 09:12:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:12:20,225 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 09:12:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:20,713 INFO L93 Difference]: Finished difference Result 273 states and 318 transitions. [2021-08-29 09:12:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 09:12:20,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 27 [2021-08-29 09:12:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:20,714 INFO L225 Difference]: With dead ends: 273 [2021-08-29 09:12:20,714 INFO L226 Difference]: Without dead ends: 271 [2021-08-29 09:12:20,715 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 116.91ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-29 09:12:20,715 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 371.90ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:20,715 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 613 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [19 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 371.90ms Time] [2021-08-29 09:12:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-08-29 09:12:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 116. [2021-08-29 09:12:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 115 states have internal predecessors, (138), 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 09:12:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2021-08-29 09:12:20,720 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 27 [2021-08-29 09:12:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:20,721 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2021-08-29 09:12:20,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 09:12:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2021-08-29 09:12:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 09:12:20,721 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:20,721 INFO L513 BasicCegarLoop]: trace histogram [2, 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 09:12:20,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 09:12:20,721 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:20,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2026653164, now seen corresponding path program 1 times [2021-08-29 09:12:20,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:20,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549489778] [2021-08-29 09:12:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:20,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:20,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:20,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549489778] [2021-08-29 09:12:20,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549489778] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:12:20,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477092723] [2021-08-29 09:12:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:20,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:12:20,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 09:12:20,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 09:12:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:20,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 09:12:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:12:20,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 09:12:20,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 09:12:20,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:20,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-29 09:12:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:20,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-29 09:12:21,166 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 09:12:21,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-08-29 09:12:21,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-29 09:12:21,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-08-29 09:12:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:21,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:12:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:21,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477092723] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 09:12:21,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 09:12:21,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 8 [2021-08-29 09:12:21,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532341517] [2021-08-29 09:12:21,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 09:12:21,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:21,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 09:12:21,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-29 09:12:21,295 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 09:12:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:21,567 INFO L93 Difference]: Finished difference Result 220 states and 256 transitions. [2021-08-29 09:12:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 09:12:21,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 29 [2021-08-29 09:12:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:21,568 INFO L225 Difference]: With dead ends: 220 [2021-08-29 09:12:21,568 INFO L226 Difference]: Without dead ends: 158 [2021-08-29 09:12:21,568 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 72.61ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-29 09:12:21,568 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.97ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:21,569 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [24 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 220.97ms Time] [2021-08-29 09:12:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-29 09:12:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 118. [2021-08-29 09:12:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 117 states have internal predecessors, (138), 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 09:12:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2021-08-29 09:12:21,573 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 29 [2021-08-29 09:12:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:21,573 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2021-08-29 09:12:21,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 09:12:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2021-08-29 09:12:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 09:12:21,574 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:21,574 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, 1, 1] [2021-08-29 09:12:21,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 09:12:21,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-29 09:12:21,793 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2133518130, now seen corresponding path program 1 times [2021-08-29 09:12:21,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:21,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641111015] [2021-08-29 09:12:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:21,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:21,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:21,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641111015] [2021-08-29 09:12:21,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641111015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:21,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:21,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 09:12:21,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178483463] [2021-08-29 09:12:21,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 09:12:21,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 09:12:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 09:12:21,912 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 09:12:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:22,185 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2021-08-29 09:12:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:12:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-08-29 09:12:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:22,186 INFO L225 Difference]: With dead ends: 161 [2021-08-29 09:12:22,186 INFO L226 Difference]: Without dead ends: 141 [2021-08-29 09:12:22,186 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.00ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:12:22,187 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.11ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:22,187 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 404 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [5 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 245.11ms Time] [2021-08-29 09:12:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-29 09:12:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2021-08-29 09:12:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 116 states have internal predecessors, (136), 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 09:12:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-08-29 09:12:22,202 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 29 [2021-08-29 09:12:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:22,202 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-08-29 09:12:22,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 09:12:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-08-29 09:12:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 09:12:22,203 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:22,203 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2021-08-29 09:12:22,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-29 09:12:22,203 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:22,203 INFO L82 PathProgramCache]: Analyzing trace with hash 830518973, now seen corresponding path program 1 times [2021-08-29 09:12:22,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:22,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364171645] [2021-08-29 09:12:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:22,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:22,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:22,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364171645] [2021-08-29 09:12:22,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364171645] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:12:22,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791539136] [2021-08-29 09:12:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:22,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:22,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:12:22,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 09:12:22,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 09:12:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:22,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 09:12:22,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:12:22,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 09:12:22,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-29 09:12:22,365 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-29 09:12:22,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-29 09:12:22,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:22,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-29 09:12:22,542 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-29 09:12:22,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-08-29 09:12:22,546 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-29 09:12:22,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-08-29 09:12:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 09:12:22,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:12:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 09:12:22,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791539136] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 09:12:22,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 09:12:22,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 7 [2021-08-29 09:12:22,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361991410] [2021-08-29 09:12:22,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 09:12:22,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 09:12:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-29 09:12:22,668 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 09:12:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:23,043 INFO L93 Difference]: Finished difference Result 223 states and 251 transitions. [2021-08-29 09:12:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 09:12:23,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 32 [2021-08-29 09:12:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:23,044 INFO L225 Difference]: With dead ends: 223 [2021-08-29 09:12:23,044 INFO L226 Difference]: Without dead ends: 180 [2021-08-29 09:12:23,044 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 66.55ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-29 09:12:23,045 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.67ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:23,045 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 558 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [9 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 317.67ms Time] [2021-08-29 09:12:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-29 09:12:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2021-08-29 09:12:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.248062015503876) internal successors, (161), 133 states have internal predecessors, (161), 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 09:12:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2021-08-29 09:12:23,049 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 32 [2021-08-29 09:12:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:23,050 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2021-08-29 09:12:23,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 09:12:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2021-08-29 09:12:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 09:12:23,050 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:23,050 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, 1, 1, 1, 1, 1] [2021-08-29 09:12:23,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-29 09:12:23,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-29 09:12:23,271 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:23,271 INFO L82 PathProgramCache]: Analyzing trace with hash -60835504, now seen corresponding path program 1 times [2021-08-29 09:12:23,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:23,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545358880] [2021-08-29 09:12:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:23,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:23,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:23,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545358880] [2021-08-29 09:12:23,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545358880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:23,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:23,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 09:12:23,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195122616] [2021-08-29 09:12:23,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 09:12:23,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 09:12:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:23,306 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 09:12:23,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:23,401 INFO L93 Difference]: Finished difference Result 293 states and 360 transitions. [2021-08-29 09:12:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 09:12:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-08-29 09:12:23,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:23,402 INFO L225 Difference]: With dead ends: 293 [2021-08-29 09:12:23,402 INFO L226 Difference]: Without dead ends: 211 [2021-08-29 09:12:23,402 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 09:12:23,402 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.78ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:23,403 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 85.78ms Time] [2021-08-29 09:12:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-08-29 09:12:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 171. [2021-08-29 09:12:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.2469879518072289) internal successors, (207), 170 states have internal predecessors, (207), 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 09:12:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2021-08-29 09:12:23,416 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 32 [2021-08-29 09:12:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:23,416 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2021-08-29 09:12:23,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 09:12:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2021-08-29 09:12:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-29 09:12:23,417 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:23,417 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:23,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-29 09:12:23,417 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1562646056, now seen corresponding path program 1 times [2021-08-29 09:12:23,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:23,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282288957] [2021-08-29 09:12:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:23,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:23,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:23,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282288957] [2021-08-29 09:12:23,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282288957] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:12:23,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334751960] [2021-08-29 09:12:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:23,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:12:23,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 09:12:23,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 09:12:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:23,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-29 09:12:23,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:12:23,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-29 09:12:23,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 09:12:23,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 09:12:23,717 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-08-29 09:12:23,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 66 [2021-08-29 09:12:23,740 INFO L354 Elim1Store]: treesize reduction 76, result has 24.8 percent of original size [2021-08-29 09:12:23,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 61 [2021-08-29 09:12:23,783 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-29 09:12:23,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-29 09:12:23,995 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-08-29 09:12:23,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2021-08-29 09:12:24,018 INFO L354 Elim1Store]: treesize reduction 146, result has 16.1 percent of original size [2021-08-29 09:12:24,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 94 [2021-08-29 09:12:24,389 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-29 09:12:24,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 60 [2021-08-29 09:12:24,396 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-08-29 09:12:24,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 26 [2021-08-29 09:12:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:24,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:12:29,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-29 09:12:29,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-29 09:12:29,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-29 09:12:29,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506118520] [2021-08-29 09:12:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 09:12:29,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 09:12:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=156, Unknown=2, NotChecked=0, Total=210 [2021-08-29 09:12:29,198 INFO L87 Difference]: Start difference. First operand 171 states and 207 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 09:12:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:29,782 INFO L93 Difference]: Finished difference Result 388 states and 461 transitions. [2021-08-29 09:12:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-29 09:12:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-29 09:12:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:29,783 INFO L225 Difference]: With dead ends: 388 [2021-08-29 09:12:29,783 INFO L226 Difference]: Without dead ends: 296 [2021-08-29 09:12:29,784 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4418.67ms TimeCoverageRelationStatistics Valid=141, Invalid=457, Unknown=2, NotChecked=0, Total=600 [2021-08-29 09:12:29,784 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 321.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 387.21ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:29,784 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 625 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [37 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 387.21ms Time] [2021-08-29 09:12:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-08-29 09:12:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 193. [2021-08-29 09:12:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.2340425531914894) internal successors, (232), 192 states have internal predecessors, (232), 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 09:12:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2021-08-29 09:12:29,790 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 36 [2021-08-29 09:12:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:29,791 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2021-08-29 09:12:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 09:12:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2021-08-29 09:12:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-29 09:12:29,791 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:29,791 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:29,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 09:12:29,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:29,992 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash -431498650, now seen corresponding path program 1 times [2021-08-29 09:12:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:29,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813149258] [2021-08-29 09:12:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:29,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:30,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:30,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813149258] [2021-08-29 09:12:30,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813149258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 09:12:30,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 09:12:30,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 09:12:30,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8684823] [2021-08-29 09:12:30,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 09:12:30,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 09:12:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 09:12:30,023 INFO L87 Difference]: Start difference. First operand 193 states and 232 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 09:12:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:30,180 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2021-08-29 09:12:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 09:12:30,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-08-29 09:12:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:30,181 INFO L225 Difference]: With dead ends: 311 [2021-08-29 09:12:30,181 INFO L226 Difference]: Without dead ends: 202 [2021-08-29 09:12:30,181 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.20ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 09:12:30,182 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.66ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:30,182 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [3 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 134.66ms Time] [2021-08-29 09:12:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-08-29 09:12:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2021-08-29 09:12:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.231578947368421) internal successors, (234), 194 states have internal predecessors, (234), 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 09:12:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 234 transitions. [2021-08-29 09:12:30,187 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 234 transitions. Word has length 36 [2021-08-29 09:12:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 234 transitions. [2021-08-29 09:12:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 09:12:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 234 transitions. [2021-08-29 09:12:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-29 09:12:30,188 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:30,188 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 09:12:30,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-29 09:12:30,188 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:30,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:30,189 INFO L82 PathProgramCache]: Analyzing trace with hash 589569704, now seen corresponding path program 1 times [2021-08-29 09:12:30,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:30,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721216887] [2021-08-29 09:12:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:30,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:30,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 09:12:30,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721216887] [2021-08-29 09:12:30,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721216887] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 09:12:30,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300980657] [2021-08-29 09:12:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:30,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:30,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 09:12:30,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 09:12:30,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 09:12:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 09:12:30,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-29 09:12:30,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 09:12:30,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-29 09:12:30,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 09:12:30,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 09:12:30,564 INFO L354 Elim1Store]: treesize reduction 76, result has 24.8 percent of original size [2021-08-29 09:12:30,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 74 [2021-08-29 09:12:30,587 INFO L354 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2021-08-29 09:12:30,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 61 [2021-08-29 09:12:30,628 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-29 09:12:30,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-29 09:12:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:31,110 INFO L354 Elim1Store]: treesize reduction 710, result has 11.1 percent of original size [2021-08-29 09:12:31,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 660 treesize of output 419 [2021-08-29 09:12:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-29 09:12:31,255 INFO L354 Elim1Store]: treesize reduction 1120, result has 6.7 percent of original size [2021-08-29 09:12:31,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 529 treesize of output 446 [2021-08-29 09:12:31,274 INFO L354 Elim1Store]: treesize reduction 20, result has 62.3 percent of original size [2021-08-29 09:12:31,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 441 treesize of output 453 [2021-08-29 09:12:31,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:31,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:31,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-29 09:12:31,339 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-08-29 09:12:31,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 26 [2021-08-29 09:12:31,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-29 09:12:31,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-29 09:12:31,928 INFO L354 Elim1Store]: treesize reduction 127, result has 8.6 percent of original size [2021-08-29 09:12:31,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 394 treesize of output 270 [2021-08-29 09:12:32,868 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-08-29 09:12:32,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 88 [2021-08-29 09:12:32,880 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-08-29 09:12:32,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 40 [2021-08-29 09:12:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 09:12:32,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 09:12:34,987 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc15.base_7| Int)) (or (let ((.cse5 (+ 4 c_ULTIMATE.start_main_~end~0.offset))) (let ((.cse0 (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~end~0.base) .cse5 0)))) (store .cse7 |v_ULTIMATE.start_main_#t~malloc15.base_7| (store (select .cse7 |v_ULTIMATE.start_main_#t~malloc15.base_7|) 0 0)))) (.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~end~0.base) .cse5 |v_ULTIMATE.start_main_#t~malloc15.base_7|)))) (store .cse6 |v_ULTIMATE.start_main_#t~malloc15.base_7| (store (select .cse6 |v_ULTIMATE.start_main_#t~malloc15.base_7|) 0 0))))) (let ((.cse1 (select (select .cse4 c_ULTIMATE.start_main_~end~0.base) .cse5)) (.cse2 (+ (select (select .cse0 c_ULTIMATE.start_main_~end~0.base) .cse5) 4)) (.cse3 (+ c_ULTIMATE.start_main_~list~0.offset 4))) (and (= (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 0)) c_ULTIMATE.start_main_~list~0.base) .cse3) 0) (= (select (select (store .cse4 .cse1 (store (select .cse4 .cse1) .cse2 0)) c_ULTIMATE.start_main_~list~0.base) .cse3) 0))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc15.base_7|) 0)))) is different from false [2021-08-29 09:12:41,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-29 09:12:41,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-29 09:12:41,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-29 09:12:41,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993520959] [2021-08-29 09:12:41,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 09:12:41,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 09:12:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 09:12:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=159, Unknown=2, NotChecked=26, Total=240 [2021-08-29 09:12:41,886 INFO L87 Difference]: Start difference. First operand 195 states and 234 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 09:12:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 09:12:42,633 INFO L93 Difference]: Finished difference Result 399 states and 476 transitions. [2021-08-29 09:12:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-29 09:12:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-29 09:12:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 09:12:42,637 INFO L225 Difference]: With dead ends: 399 [2021-08-29 09:12:42,637 INFO L226 Difference]: Without dead ends: 307 [2021-08-29 09:12:42,638 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5816.03ms TimeCoverageRelationStatistics Valid=119, Invalid=389, Unknown=2, NotChecked=42, Total=552 [2021-08-29 09:12:42,638 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 272 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.10ms IncrementalHoareTripleChecker+Time [2021-08-29 09:12:42,638 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 0 Invalid, 684 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [33 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 459.10ms Time] [2021-08-29 09:12:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-08-29 09:12:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 197. [2021-08-29 09:12:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 192 states have (on average 1.2291666666666667) internal successors, (236), 196 states have internal predecessors, (236), 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 09:12:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 236 transitions. [2021-08-29 09:12:42,644 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 236 transitions. Word has length 36 [2021-08-29 09:12:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 09:12:42,644 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 236 transitions. [2021-08-29 09:12:42,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 09:12:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 236 transitions. [2021-08-29 09:12:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-29 09:12:42,645 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 09:12:42,645 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1] [2021-08-29 09:12:42,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 09:12:42,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 09:12:42,864 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-08-29 09:12:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 09:12:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash -648373053, now seen corresponding path program 1 times [2021-08-29 09:12:42,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 09:12:42,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628532025] [2021-08-29 09:12:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 09:12:42,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 09:12:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:12:42,873 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 09:12:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 09:12:42,900 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 09:12:42,900 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 09:12:42,901 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (12 of 13 remaining) [2021-08-29 09:12:42,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2021-08-29 09:12:42,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2021-08-29 09:12:42,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2021-08-29 09:12:42,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2021-08-29 09:12:42,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2021-08-29 09:12:42,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2021-08-29 09:12:42,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-29 09:12:42,909 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 09:12:42,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:12:42 BoogieIcfgContainer [2021-08-29 09:12:42,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 09:12:42,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 09:12:42,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 09:12:42,945 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 09:12:42,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:12:16" (3/4) ... [2021-08-29 09:12:42,946 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 09:12:42,981 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 09:12:42,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 09:12:42,981 INFO L158 Benchmark]: Toolchain (without parser) took 26795.53ms. Allocated memory was 62.9MB in the beginning and 142.6MB in the end (delta: 79.7MB). Free memory was 42.5MB in the beginning and 60.9MB in the end (delta: -18.4MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,981 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 09:12:42,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.06ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 43.7MB in the end (delta: -1.3MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.74ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,982 INFO L158 Benchmark]: Boogie Preprocessor took 25.34ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 39.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,982 INFO L158 Benchmark]: RCFGBuilder took 361.45ms. Allocated memory was 62.9MB in the beginning and 96.5MB in the end (delta: 33.6MB). Free memory was 39.1MB in the beginning and 76.3MB in the end (delta: -37.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,983 INFO L158 Benchmark]: TraceAbstraction took 26001.07ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 75.8MB in the beginning and 64.1MB in the end (delta: 11.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,983 INFO L158 Benchmark]: Witness Printer took 36.14ms. Allocated memory is still 142.6MB. Free memory was 64.1MB in the beginning and 60.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 09:12:42,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.06ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 43.7MB in the end (delta: -1.3MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.74ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.34ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 39.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.45ms. Allocated memory was 62.9MB in the beginning and 96.5MB in the end (delta: 33.6MB). Free memory was 39.1MB in the beginning and 76.3MB in the end (delta: -37.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 26001.07ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 75.8MB in the beginning and 64.1MB in the end (delta: 11.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * Witness Printer took 36.14ms. Allocated memory is still 142.6MB. Free memory was 64.1MB in the beginning and 60.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 1036]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); [L1003] list->next = ((void*)0) [L1004] COND FALSE !(!(list != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) [L1004] EXPR list->inner [L1004] list->inner->next = ((void*)0) [L1004] EXPR list->inner [L1004] list->inner->inner = ((void*)0) [L1004] EXPR list->inner [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list [L1023] COND FALSE !(!(((void*)0) != end)) [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; [L1028] EXPR end->inner [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner [L1031] COND TRUE len == 0 [L1032] len = 1 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND FALSE !(!(((void*)0) == inner->inner)) [L1037] EXPR inner->next [L1037] COND FALSE !(!(((void*)0) == inner->next)) [L1038] EXPR inner->inner [L1038] inner = inner->inner [L1039] COND TRUE len == 1 [L1040] EXPR inner->inner [L1040] inner = inner->inner [L1029] COND TRUE ((void*)0) != inner [L1031] COND FALSE !(len == 0) [L1034] len = 2 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND TRUE !(((void*)0) == inner->inner) [L1036] reach_error() - UnprovableResult [Line: 1004]: 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: 1004]: 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: 1015]: 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: 1016]: 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: 1016]: 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: 1023]: 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: 1035]: 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: 1037]: 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: 1042]: 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: 1054]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 25926.72ms, OverallIterations: 22, TraceHistogramMax: 2, EmptinessCheckTime: 18.35ms, AutomataDifference: 5223.80ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.72ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1984 SdHoareTripleChecker+Valid, 4044.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1984 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3299.78ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3179 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6608 IncrementalHoareTripleChecker+Invalid, 6799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 0 mSDtfsCounter, 6608 mSolverCounterSat, 33.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 10785.13ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=21, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 156.01ms AutomataMinimizationTime, 21 MinimizatonAttempts, 865 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.23ms SsaConstructionTime, 249.27ms SatisfiabilityAnalysisTime, 1840.92ms InterpolantComputationTime, 589 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 6730 SizeOfPredicates, 10 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 25 InterpolantComputations, 17 PerfectInterpolantSequences, 14/25 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 09:12:43,015 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...