./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-simple/afterrec_2calls-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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6374d8695c81504f4ccfc7ac3dabef115b6d49d ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:08:36,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:08:36,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:08:36,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:08:36,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:08:36,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:08:36,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:08:36,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:08:36,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:08:36,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:08:36,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:08:36,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:08:36,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:08:36,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:08:36,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:08:36,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:08:36,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:08:36,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:08:36,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:08:36,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:08:36,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:08:36,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:08:36,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:08:36,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:08:36,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:08:36,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:08:36,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:08:36,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:08:36,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:08:36,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:08:36,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:08:36,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:08:36,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:08:36,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:08:36,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:08:36,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:08:36,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:08:36,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:08:36,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:08:36,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:08:36,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:08:36,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 19:08:36,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:08:36,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:08:36,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:08:36,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:08:36,699 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:08:36,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:08:36,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:08:36,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 19:08:36,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:08:36,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:08:36,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:08:36,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:08:36,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:08:36,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:08:36,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:08:36,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:08:36,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:08:36,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:08:36,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:08:36,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:08:36,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:08:36,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:08:36,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:08:36,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:08:36,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:08:36,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 19:08:36,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 19:08:36,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:08:36,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:08:36,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> c6374d8695c81504f4ccfc7ac3dabef115b6d49d [2020-07-28 19:08:37,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:08:37,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:08:37,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:08:37,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:08:37,053 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:08:37,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-07-28 19:08:37,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3da4977/8a90e6fafe0f47aebba3c2eae62de9ee/FLAG29fa40473 [2020-07-28 19:08:37,602 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:08:37,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-07-28 19:08:37,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3da4977/8a90e6fafe0f47aebba3c2eae62de9ee/FLAG29fa40473 [2020-07-28 19:08:38,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3da4977/8a90e6fafe0f47aebba3c2eae62de9ee [2020-07-28 19:08:38,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:08:38,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:08:38,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:08:38,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:08:38,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:08:38,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c2511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38, skipping insertion in model container [2020-07-28 19:08:38,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:08:38,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:08:38,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:08:38,260 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:08:38,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:08:38,292 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:08:38,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38 WrapperNode [2020-07-28 19:08:38,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:08:38,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:08:38,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:08:38,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:08:38,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:08:38,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:08:38,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:08:38,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:08:38,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (1/1) ... [2020-07-28 19:08:38,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:08:38,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:08:38,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:08:38,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:08:38,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (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 [2020-07-28 19:08:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-28 19:08:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-28 19:08:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:08:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:08:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-07-28 19:08:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-07-28 19:08:38,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:08:38,781 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:08:38,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:38 BoogieIcfgContainer [2020-07-28 19:08:38,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:08:38,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:08:38,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:08:38,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:08:38,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:08:38" (1/3) ... [2020-07-28 19:08:38,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d9ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:08:38, skipping insertion in model container [2020-07-28 19:08:38,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:08:38" (2/3) ... [2020-07-28 19:08:38,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d9ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:08:38, skipping insertion in model container [2020-07-28 19:08:38,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:38" (3/3) ... [2020-07-28 19:08:38,797 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-07-28 19:08:38,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:08:38,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 19:08:38,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 19:08:38,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:08:38,877 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:08:38,878 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:08:38,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:08:38,879 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:08:38,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:08:38,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:08:38,880 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:08:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-28 19:08:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 19:08:38,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:08:38,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:08:38,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:08:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:08:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1282022558, now seen corresponding path program 1 times [2020-07-28 19:08:38,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 19:08:38,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604403477] [2020-07-28 19:08:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 19:08:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:39,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-07-28 19:08:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:08:39,135 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} ~n := #in~n; {22#true} is VALID [2020-07-28 19:08:39,135 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume ~n < 3; {22#true} is VALID [2020-07-28 19:08:39,136 INFO L280 TraceCheckUtils]: 2: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-28 19:08:39,136 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {22#true} {23#false} #27#return; {23#false} is VALID [2020-07-28 19:08:39,138 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} havoc main_#res; {22#true} is VALID [2020-07-28 19:08:39,142 INFO L263 TraceCheckUtils]: 1: Hoare triple {22#true} call f(2); {24#(<= |f_#in~n| 2)} is VALID [2020-07-28 19:08:39,144 INFO L280 TraceCheckUtils]: 2: Hoare triple {24#(<= |f_#in~n| 2)} ~n := #in~n; {25#(<= f_~n 2)} is VALID [2020-07-28 19:08:39,149 INFO L280 TraceCheckUtils]: 3: Hoare triple {25#(<= f_~n 2)} assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; {23#false} is VALID [2020-07-28 19:08:39,150 INFO L263 TraceCheckUtils]: 4: Hoare triple {23#false} call f2(~n); {22#true} is VALID [2020-07-28 19:08:39,150 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} ~n := #in~n; {22#true} is VALID [2020-07-28 19:08:39,151 INFO L280 TraceCheckUtils]: 6: Hoare triple {22#true} assume ~n < 3; {22#true} is VALID [2020-07-28 19:08:39,151 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-28 19:08:39,151 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {22#true} {23#false} #27#return; {23#false} is VALID [2020-07-28 19:08:39,152 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-28 19:08:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:08:39,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604403477] [2020-07-28 19:08:39,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 19:08:39,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 19:08:39,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622621614] [2020-07-28 19:08:39,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-28 19:08:39,167 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 19:08:39,171 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 19:08:39,206 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:08:39,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 19:08:39,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 19:08:39,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 19:08:39,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 19:08:39,219 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-07-28 19:08:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:39,318 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-07-28 19:08:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 19:08:39,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-28 19:08:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 19:08:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 19:08:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2020-07-28 19:08:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 19:08:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2020-07-28 19:08:39,339 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2020-07-28 19:08:39,400 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:08:39,408 INFO L225 Difference]: With dead ends: 26 [2020-07-28 19:08:39,408 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 19:08:39,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-28 19:08:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 19:08:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 19:08:39,443 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 19:08:39,443 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:39,444 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:39,444 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:39,445 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:08:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:39,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:39,446 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:08:39,446 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:39,446 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:08:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:08:39,447 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:08:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:39,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:39,448 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:08:39,448 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 19:08:39,448 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 19:08:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 19:08:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 19:08:39,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-28 19:08:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 19:08:39,451 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 19:08:39,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 19:08:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:08:39,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:08:39,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 19:08:39,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 19:08:39,494 INFO L268 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-28 19:08:39,495 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2020-07-28 19:08:39,495 INFO L268 CegarLoopResult]: For program point L9-1(lines 6 11) no Hoare annotation was computed. [2020-07-28 19:08:39,495 INFO L268 CegarLoopResult]: For program point fEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-28 19:08:39,496 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-28 19:08:39,496 INFO L271 CegarLoopResult]: At program point fENTRY(lines 6 11) the Hoare annotation is: true [2020-07-28 19:08:39,496 INFO L268 CegarLoopResult]: For program point fFINAL(lines 6 11) no Hoare annotation was computed. [2020-07-28 19:08:39,496 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 19:08:39,497 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 19:08:39,497 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 19:08:39,497 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-07-28 19:08:39,497 INFO L268 CegarLoopResult]: For program point L21-1(lines 20 22) no Hoare annotation was computed. [2020-07-28 19:08:39,498 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-28 19:08:39,498 INFO L268 CegarLoopResult]: For program point f2EXIT(lines 13 18) no Hoare annotation was computed. [2020-07-28 19:08:39,498 INFO L268 CegarLoopResult]: For program point L16-1(lines 13 18) no Hoare annotation was computed. [2020-07-28 19:08:39,498 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-07-28 19:08:39,499 INFO L271 CegarLoopResult]: At program point f2ENTRY(lines 13 18) the Hoare annotation is: true [2020-07-28 19:08:39,499 INFO L268 CegarLoopResult]: For program point f2FINAL(lines 13 18) no Hoare annotation was computed. [2020-07-28 19:08:39,499 INFO L268 CegarLoopResult]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-07-28 19:08:39,507 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 19:08:39,507 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 19:08:39,507 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 19:08:39,507 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 19:08:39,508 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 19:08:39,508 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-28 19:08:39,508 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 19:08:39,508 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 19:08:39,508 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-28 19:08:39,509 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 19:08:39,509 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2020-07-28 19:08:39,509 WARN L170 areAnnotationChecker]: f2FINAL has no Hoare annotation [2020-07-28 19:08:39,509 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-28 19:08:39,510 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-28 19:08:39,510 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-28 19:08:39,510 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 19:08:39,510 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-28 19:08:39,511 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 19:08:39,511 WARN L170 areAnnotationChecker]: f2EXIT has no Hoare annotation [2020-07-28 19:08:39,511 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-28 19:08:39,511 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-28 19:08:39,512 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 19:08:39,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 07:08:39 BoogieIcfgContainer [2020-07-28 19:08:39,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 19:08:39,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 19:08:39,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 19:08:39,517 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 19:08:39,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:08:38" (3/4) ... [2020-07-28 19:08:39,523 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 19:08:39,532 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-07-28 19:08:39,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2020-07-28 19:08:39,540 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-07-28 19:08:39,541 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 19:08:39,647 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 19:08:39,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 19:08:39,654 INFO L168 Benchmark]: Toolchain (without parser) took 1614.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 957.6 MB in the beginning and 1.0 GB in the end (delta: -80.9 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,654 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:08:39,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.36 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,660 INFO L168 Benchmark]: Boogie Preprocessor took 21.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:08:39,666 INFO L168 Benchmark]: RCFGBuilder took 365.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,667 INFO L168 Benchmark]: TraceAbstraction took 728.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,668 INFO L168 Benchmark]: Witness Printer took 131.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:08:39,678 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.36 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 103.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -162.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 365.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 728.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. * Witness Printer took 131.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...