./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/recursive/recHanoi02-2.c -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 47fcb479d933beca049827d7d80a7b2ad5309684 ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 23:09:21,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:09:21,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:09:21,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:09:21,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:09:21,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:09:21,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:09:21,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:09:21,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:09:21,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:09:21,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:09:21,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:09:21,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:09:21,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:09:21,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:09:21,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:09:21,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:09:21,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:09:21,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:09:21,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:09:21,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:09:21,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:09:21,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:09:21,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:09:21,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:09:21,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:09:21,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:09:21,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:09:21,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:09:21,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:09:21,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:09:21,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:09:21,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:09:21,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:09:21,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:09:21,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:09:21,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:09:21,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:09:21,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:09:21,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:09:21,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:09:21,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:09:21,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:09:21,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:09:21,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:09:22,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:09:22,001 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:09:22,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:09:22,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:09:22,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:09:22,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:09:22,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:09:22,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:09:22,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:09:22,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:09:22,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:09:22,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:09:22,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:09:22,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:09:22,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:09:22,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:09:22,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:09:22,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:09:22,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:09:22,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:09:22,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:09:22,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:09:22,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:09:22,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:09:22,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:09:22,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:09:22,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fcb479d933beca049827d7d80a7b2ad5309684 [2020-10-25 23:09:22,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:09:22,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:09:22,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:09:22,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:09:22,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:09:22,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi02-2.c [2020-10-25 23:09:22,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111d5a21/c72f3d615bd24aa9a44f114312dcdf6d/FLAG8fe16ae04 [2020-10-25 23:09:23,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:09:23,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi02-2.c [2020-10-25 23:09:23,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111d5a21/c72f3d615bd24aa9a44f114312dcdf6d/FLAG8fe16ae04 [2020-10-25 23:09:23,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111d5a21/c72f3d615bd24aa9a44f114312dcdf6d [2020-10-25 23:09:23,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:09:23,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:09:23,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:23,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:09:23,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:09:23,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:23,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae32ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23, skipping insertion in model container [2020-10-25 23:09:23,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:23,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:09:23,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:09:23,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:23,922 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:09:23,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:23,957 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:09:23,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23 WrapperNode [2020-10-25 23:09:23,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:23,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:23,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:09:23,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:09:23,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:23,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:24,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:09:24,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:09:24,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:09:24,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... [2020-10-25 23:09:24,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:09:24,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:09:24,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:09:24,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:09:24,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:09:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-25 23:09:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-25 23:09:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:09:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:09:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:09:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:09:24,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:09:24,369 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 23:09:24,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:24 BoogieIcfgContainer [2020-10-25 23:09:24,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:09:24,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:09:24,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:09:24,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:09:24,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:09:23" (1/3) ... [2020-10-25 23:09:24,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319d40e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:24, skipping insertion in model container [2020-10-25 23:09:24,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:23" (2/3) ... [2020-10-25 23:09:24,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319d40e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:24, skipping insertion in model container [2020-10-25 23:09:24,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:24" (3/3) ... [2020-10-25 23:09:24,389 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-10-25 23:09:24,403 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:09:24,408 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 23:09:24,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 23:09:24,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:09:24,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:09:24,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:09:24,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:09:24,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:09:24,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:09:24,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:09:24,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:09:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-25 23:09:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 23:09:24,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:24,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:24,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1397741056, now seen corresponding path program 1 times [2020-10-25 23:09:24,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:24,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394894295] [2020-10-25 23:09:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:09:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394894295] [2020-10-25 23:09:24,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:09:24,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 23:09:24,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979908139] [2020-10-25 23:09:24,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:09:24,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:24,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:09:24,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:09:24,849 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-10-25 23:09:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:25,057 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-10-25 23:09:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:09:25,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-25 23:09:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:25,079 INFO L225 Difference]: With dead ends: 33 [2020-10-25 23:09:25,080 INFO L226 Difference]: Without dead ends: 16 [2020-10-25 23:09:25,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:09:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-25 23:09:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-25 23:09:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 23:09:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-25 23:09:25,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2020-10-25 23:09:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:25,144 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-25 23:09:25,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:09:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-25 23:09:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:09:25,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:25,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:25,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:09:25,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:25,152 INFO L82 PathProgramCache]: Analyzing trace with hash -588624460, now seen corresponding path program 1 times [2020-10-25 23:09:25,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:25,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009045005] [2020-10-25 23:09:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:25,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-25 23:09:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 23:09:25,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009045005] [2020-10-25 23:09:25,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927113560] [2020-10-25 23:09:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:09:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:25,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:09:25,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 23:09:25,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 23:09:25,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2020-10-25 23:09:25,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570203755] [2020-10-25 23:09:25,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 23:09:25,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:25,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 23:09:25,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 23:09:25,683 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-10-25 23:09:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:25,708 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-10-25 23:09:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:09:25,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-25 23:09:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:25,710 INFO L225 Difference]: With dead ends: 16 [2020-10-25 23:09:25,710 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 23:09:25,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 23:09:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 23:09:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 23:09:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 23:09:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 23:09:25,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-25 23:09:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:25,712 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 23:09:25,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 23:09:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 23:09:25,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 23:09:25,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 23:09:25,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 23:09:25,946 INFO L274 CegarLoopResult]: For program point hanoiEXIT(lines 20 25) no Hoare annotation was computed. [2020-10-25 23:09:25,947 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2020-10-25 23:09:25,947 INFO L274 CegarLoopResult]: For program point hanoiFINAL(lines 20 25) no Hoare annotation was computed. [2020-10-25 23:09:25,947 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-25 23:09:25,947 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~n~0) [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 23:09:25,948 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 23:09:25,949 INFO L277 CegarLoopResult]: At program point L28(lines 28 39) the Hoare annotation is: true [2020-10-25 23:09:25,949 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 23:09:25,949 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-10-25 23:09:25,949 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 23:09:25,949 INFO L274 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-10-25 23:09:25,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:09:25 BoogieIcfgContainer [2020-10-25 23:09:25,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:09:25,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:09:25,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:09:25,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:09:25,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:24" (3/4) ... [2020-10-25 23:09:25,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 23:09:25,977 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2020-10-25 23:09:25,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 23:09:25,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 23:09:25,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:09:25,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:09:26,030 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:09:26,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:09:26,033 INFO L168 Benchmark]: Toolchain (without parser) took 2381.28 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 28.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,034 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 52.4 MB. Free memory is still 35.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:26,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.59 ms. Allocated memory is still 52.4 MB. Free memory was 29.7 MB in the beginning and 34.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 33.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,036 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 32.4 MB in the end (delta: 900.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:26,037 INFO L168 Benchmark]: RCFGBuilder took 352.60 ms. Allocated memory is still 52.4 MB. Free memory was 32.4 MB in the beginning and 36.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,038 INFO L168 Benchmark]: TraceAbstraction took 1582.84 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 36.4 MB in the beginning and 30.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,039 INFO L168 Benchmark]: Witness Printer took 66.16 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 28.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:26,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 52.4 MB. Free memory is still 35.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.59 ms. Allocated memory is still 52.4 MB. Free memory was 29.7 MB in the beginning and 34.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 33.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.93 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 32.4 MB in the end (delta: 900.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 352.60 ms. Allocated memory is still 52.4 MB. Free memory was 32.4 MB in the beginning and 36.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1582.84 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 36.4 MB in the beginning and 30.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.16 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 28.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 12 SDslu, 118 SDs, 0 SdLazy, 26 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1160 SizeOfPredicates, 1 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...