./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_3-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer --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 567ad22bceea9f434c69cd01babdc4ad1d30ddf7 ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:58:41,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:58:41,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:58:41,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:58:41,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:58:41,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:58:41,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:58:41,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:58:41,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:58:41,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:58:41,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:58:41,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:58:41,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:58:41,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:58:41,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:58:41,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:58:41,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:58:41,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:58:41,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:58:41,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:58:41,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:58:41,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:58:41,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:58:41,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:58:41,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:58:41,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:58:41,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:58:41,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:58:41,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:58:41,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:58:41,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:58:41,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:58:41,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:58:41,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:58:41,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:58:41,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:58:41,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:58:41,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:58:41,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:58:41,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:58:41,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:58:41,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:58:41,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:58:41,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:58:41,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:58:41,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:58:41,982 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:58:41,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:58:41,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:58:41,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:58:41,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:58:41,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:58:41,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:58:41,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:58:41,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:58:41,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:58:41,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:58:41,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:58:41,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:58:41,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:58:41,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:58:41,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:58:41,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:58:41,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:58:41,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:58:41,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:58:41,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:58:41,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:58:41,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:58:41,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:58:41,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:58:41,990 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:/tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 567ad22bceea9f434c69cd01babdc4ad1d30ddf7 [2020-12-01 15:58:42,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:58:42,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:58:42,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:58:42,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:58:42,318 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:58:42,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/simple_3-2.c [2020-12-01 15:58:42,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/data/e34fd8167/408e54798c0d46ebab646596d5e16bd9/FLAG6860054f6 [2020-12-01 15:58:42,982 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:58:42,985 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/sv-benchmarks/c/loop-acceleration/simple_3-2.c [2020-12-01 15:58:42,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/data/e34fd8167/408e54798c0d46ebab646596d5e16bd9/FLAG6860054f6 [2020-12-01 15:58:43,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/data/e34fd8167/408e54798c0d46ebab646596d5e16bd9 [2020-12-01 15:58:43,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:58:43,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:58:43,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:58:43,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:58:43,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:58:43,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6626452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43, skipping insertion in model container [2020-12-01 15:58:43,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:58:43,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:58:43,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:58:43,630 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:58:43,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:58:43,678 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:58:43,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43 WrapperNode [2020-12-01 15:58:43,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:58:43,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:58:43,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:58:43,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:58:43,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:58:43,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:58:43,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:58:43,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:58:43,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... [2020-12-01 15:58:43,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:58:43,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:58:43,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:58:43,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:58:43,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/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 [2020-12-01 15:58:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:58:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:58:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:58:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:58:44,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:58:44,217 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 15:58:44,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:58:44 BoogieIcfgContainer [2020-12-01 15:58:44,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:58:44,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:58:44,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:58:44,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:58:44,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:58:43" (1/3) ... [2020-12-01 15:58:44,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2720b315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:58:44, skipping insertion in model container [2020-12-01 15:58:44,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:58:43" (2/3) ... [2020-12-01 15:58:44,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2720b315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:58:44, skipping insertion in model container [2020-12-01 15:58:44,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:58:44" (3/3) ... [2020-12-01 15:58:44,233 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-12-01 15:58:44,250 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:58:44,253 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:58:44,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:58:44,293 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:58:44,293 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:58:44,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:58:44,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:58:44,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:58:44,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:58:44,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:58:44,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:58:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-01 15:58:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:58:44,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:58:44,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:58:44,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:58:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:58:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-01 15:58:44,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:58:44,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178823926] [2020-12-01 15:58:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:58:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:58:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:58:44,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178823926] [2020-12-01 15:58:44,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:58:44,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:58:44,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084916254] [2020-12-01 15:58:44,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:58:44,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:58:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:58:44,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:58:44,591 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-01 15:58:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:58:44,650 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-12-01 15:58:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:58:44,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 15:58:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:58:44,670 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:58:44,683 INFO L226 Difference]: Without dead ends: 8 [2020-12-01 15:58:44,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:58:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-01 15:58:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-01 15:58:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-01 15:58:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-01 15:58:44,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-01 15:58:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:58:44,734 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-01 15:58:44,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:58:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-01 15:58:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:58:44,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:58:44,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:58:44,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:58:44,736 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:58:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:58:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-01 15:58:44,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:58:44,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345340177] [2020-12-01 15:58:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:58:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:58:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:58:44,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345340177] [2020-12-01 15:58:44,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131631002] [2020-12-01 15:58:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/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 [2020-12-01 15:58:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:58:44,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 15:58:44,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:58:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:58:45,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:58:45,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-01 15:58:45,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959151644] [2020-12-01 15:58:45,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:58:45,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:58:45,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:58:45,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:58:45,073 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2020-12-01 15:58:45,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:58:45,194 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-12-01 15:58:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:58:45,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-12-01 15:58:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:58:45,195 INFO L225 Difference]: With dead ends: 11 [2020-12-01 15:58:45,195 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:58:45,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:58:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:58:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:58:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:58:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:58:45,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-01 15:58:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:58:45,198 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:58:45,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:58:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:58:45,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:58:45,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:58:45,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:58:45,469 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:58:45,473 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div ULTIMATE.start_main_~x~0 2))) (and (< 0 .cse0) (<= ULTIMATE.start_main_~x~0 (* 2 .cse0)))) (= ULTIMATE.start_main_~x~0 0)) [2020-12-01 15:58:45,473 INFO L262 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2020-12-01 15:58:45,474 INFO L262 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-12-01 15:58:45,474 INFO L258 CegarLoopResult]: At program point L7-2(lines 1 22) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-12-01 15:58:45,474 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 15:58:45,475 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:58:45,475 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:58:45,476 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:58:45,476 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:58:45,479 INFO L262 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-12-01 15:58:45,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:58:45 BoogieIcfgContainer [2020-12-01 15:58:45,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:58:45,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:58:45,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:58:45,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:58:45,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:58:44" (3/4) ... [2020-12-01 15:58:45,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:58:45,521 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 15:58:45,522 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:58:45,523 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:58:45,523 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:58:45,585 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_25d579e5-d047-4287-a60d-4a187483245d/bin/uautomizer/witness.graphml [2020-12-01 15:58:45,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:58:45,591 INFO L168 Benchmark]: Toolchain (without parser) took 2255.38 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 77.8 MB in the beginning and 79.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,595 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory was 63.2 MB in the beginning and 63.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:58:45,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.33 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 83.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.50 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:58:45,598 INFO L168 Benchmark]: Boogie Preprocessor took 35.15 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,599 INFO L168 Benchmark]: RCFGBuilder took 446.82 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 70.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,600 INFO L168 Benchmark]: TraceAbstraction took 1278.84 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.0 MB in the beginning and 81.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,601 INFO L168 Benchmark]: Witness Printer took 85.07 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:58:45,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory was 63.2 MB in the beginning and 63.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.33 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 83.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.50 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.15 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.82 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 70.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1278.84 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.0 MB in the beginning and 81.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 85.07 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 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: 17]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 11 SDslu, 16 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 2 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...