./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/McCarthy91-2.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/McCarthy91-2.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 3e87f89409ab3e763661ad617b0dadcb988e72d1 ......................................................................................................................................................................................................................................................................................................................................... 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 23:09:13,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:09:13,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:09:13,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:09:13,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:09:13,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:09:13,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:09:13,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:09:13,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:09:13,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:09:13,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:09:13,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:09:13,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:09:13,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:09:13,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:09:13,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:09:13,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:09:13,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:09:13,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:09:13,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:09:13,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:09:13,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:09:13,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:09:13,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:09:14,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:09:14,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:09:14,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:09:14,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:09:14,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:09:14,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:09:14,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:09:14,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:09:14,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:09:14,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:09:14,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:09:14,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:09:14,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:09:14,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:09:14,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:09:14,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:09:14,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:09:14,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:09:14,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:09:14,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:09:14,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:09:14,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:09:14,098 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:09:14,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:09:14,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:09:14,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:09:14,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:09:14,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:09:14,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:09:14,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:09:14,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:09:14,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:09:14,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:09:14,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:09:14,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:09:14,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:09:14,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:09:14,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:09:14,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:09:14,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:09:14,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:09:14,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:09:14,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:09:14,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:09:14,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:09:14,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:09:14,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:09:14,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e87f89409ab3e763661ad617b0dadcb988e72d1 [2020-10-25 23:09:14,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:09:14,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:09:14,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:09:14,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:09:14,606 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:09:14,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-25 23:09:14,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd8cc1024/08dbe0417db148b5848194c44630a837/FLAGaf027c596 [2020-10-25 23:09:15,438 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:09:15,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-25 23:09:15,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd8cc1024/08dbe0417db148b5848194c44630a837/FLAGaf027c596 [2020-10-25 23:09:15,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd8cc1024/08dbe0417db148b5848194c44630a837 [2020-10-25 23:09:15,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:09:15,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:09:15,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:15,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:09:15,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:09:15,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f38163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:15, skipping insertion in model container [2020-10-25 23:09:15,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:09:15" (1/1) ... [2020-10-25 23:09:15,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:09:15,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:09:16,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:16,070 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:09:16,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:09:16,101 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:09:16,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16 WrapperNode [2020-10-25 23:09:16,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:09:16,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:16,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:09:16,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:09:16,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:09:16,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:09:16,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:09:16,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:09:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (1/1) ... [2020-10-25 23:09:16,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:09:16,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:09:16,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:09:16,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:09:16,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (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 23:09:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:09:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:09:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:09:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:09:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-25 23:09:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-25 23:09:16,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:09:16,691 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 23:09:16,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:16 BoogieIcfgContainer [2020-10-25 23:09:16,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:09:16,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:09:16,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:09:16,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:09:16,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:09:15" (1/3) ... [2020-10-25 23:09:16,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddb9982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:16, skipping insertion in model container [2020-10-25 23:09:16,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:09:16" (2/3) ... [2020-10-25 23:09:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddb9982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:09:16, skipping insertion in model container [2020-10-25 23:09:16,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:16" (3/3) ... [2020-10-25 23:09:16,712 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-10-25 23:09:16,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:09:16,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 23:09:16,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 23:09:16,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:09:16,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:09:16,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:09:16,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:09:16,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:09:16,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:09:16,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:09:16,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:09:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-25 23:09:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 23:09:16,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:16,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:16,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash -140631480, now seen corresponding path program 1 times [2020-10-25 23:09:16,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:16,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095851322] [2020-10-25 23:09:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,370 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 23:09:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095851322] [2020-10-25 23:09:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:09:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 23:09:17,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386467229] [2020-10-25 23:09:17,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:09:17,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:17,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:09:17,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:09:17,398 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-10-25 23:09:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:17,556 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-25 23:09:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:09:17,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-25 23:09:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:17,569 INFO L225 Difference]: With dead ends: 31 [2020-10-25 23:09:17,569 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 23:09:17,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-25 23:09:17,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 23:09:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-25 23:09:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-25 23:09:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-10-25 23:09:17,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2020-10-25 23:09:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:17,622 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-10-25 23:09:17,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:09:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-10-25 23:09:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 23:09:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:09:17,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:09:17,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:09:17,626 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:09:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:09:17,627 INFO L82 PathProgramCache]: Analyzing trace with hash 392210499, now seen corresponding path program 1 times [2020-10-25 23:09:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:09:17,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252427901] [2020-10-25 23:09:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:09:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-25 23:09:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-25 23:09:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 23:09:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252427901] [2020-10-25 23:09:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113678639] [2020-10-25 23:09:17,975 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 23:09:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:09:18,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-25 23:09:18,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:09:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 23:09:18,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:09:18,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-25 23:09:18,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957687705] [2020-10-25 23:09:18,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-25 23:09:18,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:09:18,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-25 23:09:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-25 23:09:18,197 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 12 states. [2020-10-25 23:09:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:09:18,369 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-10-25 23:09:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 23:09:18,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-25 23:09:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:09:18,370 INFO L225 Difference]: With dead ends: 17 [2020-10-25 23:09:18,370 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 23:09:18,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-25 23:09:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 23:09:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 23:09:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 23:09:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 23:09:18,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-25 23:09:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:09:18,375 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 23:09:18,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-25 23:09:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 23:09:18,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 23:09:18,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-25 23:09:18,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 23:09:18,646 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 23:09:18,646 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-25 23:09:18,646 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 23:09:18,646 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 23:09:18,647 INFO L274 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-10-25 23:09:18,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 23:09:18,647 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-25 23:09:18,647 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-25 23:09:18,648 INFO L277 CegarLoopResult]: At program point L26(lines 26 34) the Hoare annotation is: true [2020-10-25 23:09:18,648 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 23:09:18,648 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 23:09:18,648 INFO L277 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2020-10-25 23:09:18,648 INFO L274 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2020-10-25 23:09:18,649 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= f91_~x 100) (= f91_~x |f91_#in~x|)) [2020-10-25 23:09:18,649 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-25 23:09:18,649 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (<= f91_~x 100) (= f91_~x |f91_#in~x|) (<= |f91_#t~ret7| 101)) [2020-10-25 23:09:18,649 INFO L274 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2020-10-25 23:09:18,649 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-25 23:09:18,649 INFO L274 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-10-25 23:09:18,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:09:18 BoogieIcfgContainer [2020-10-25 23:09:18,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:09:18,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:09:18,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:09:18,666 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:09:18,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:09:16" (3/4) ... [2020-10-25 23:09:18,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 23:09:18,681 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2020-10-25 23:09:18,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 23:09:18,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 23:09:18,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:09:18,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 23:09:18,728 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:09:18,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:09:18,731 INFO L168 Benchmark]: Toolchain (without parser) took 2935.94 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 23.1 MB in the beginning and 41.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,731 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:18,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.23 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 24.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.52 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:09:18,733 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 22.3 MB in the end (delta: 913.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,734 INFO L168 Benchmark]: RCFGBuilder took 527.39 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.3 MB in the beginning and 37.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,735 INFO L168 Benchmark]: TraceAbstraction took 1965.05 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,735 INFO L168 Benchmark]: Witness Printer took 62.79 ms. Allocated memory is still 73.4 MB. Free memory was 44.5 MB in the beginning and 41.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:09:18,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.23 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 24.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.52 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.39 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 22.3 MB in the end (delta: 913.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 527.39 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.3 MB in the beginning and 37.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1965.05 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.79 ms. Allocated memory is still 73.4 MB. Free memory was 44.5 MB in the beginning and 41.9 MB in the end (delta: 2.6 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 21 SDslu, 68 SDs, 0 SdLazy, 132 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 20 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 4137 SizeOfPredicates, 5 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 16/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...