./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:23:52,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:23:52,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:23:52,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:23:52,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:23:52,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:23:52,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:23:52,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:23:52,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:23:52,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:23:52,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:23:52,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:23:52,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:23:52,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:23:52,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:23:52,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:23:52,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:23:52,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:23:52,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:23:52,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:23:52,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:23:52,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:23:52,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:23:52,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:23:52,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:23:52,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:23:52,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:23:52,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:23:52,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:23:52,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:23:52,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:23:52,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:23:52,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:23:52,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:23:52,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:23:52,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:23:52,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:23:52,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:23:52,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:23:52,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:23:52,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:23:52,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:23:52,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:23:52,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:23:52,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:23:52,703 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:23:52,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:23:52,703 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:23:52,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:23:52,704 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:23:52,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:23:52,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:23:52,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:23:52,705 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:23:52,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:23:52,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:23:52,706 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:23:52,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:23:52,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:23:52,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:23:52,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:23:52,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:23:52,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:23:52,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:23:52,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:23:52,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:23:52,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:23:52,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:23:52,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:23:52,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:23:52,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:23:52,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:23:52,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:23:52,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:23:52,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:23:52,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:23:52,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:23:52,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:23:52,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:23:52,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:23:52,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:23:52,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:23:52,714 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a [2020-11-28 07:23:53,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:23:53,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:23:53,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:23:53,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:23:53,148 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:23:53,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/../../sv-benchmarks/c/recursive/Addition02.c [2020-11-28 07:23:53,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/data/8a7fe1f60/c96205c65e6a4905b2f3c039f02c68d9/FLAG636f58c9a [2020-11-28 07:23:53,746 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:23:53,748 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/sv-benchmarks/c/recursive/Addition02.c [2020-11-28 07:23:53,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/data/8a7fe1f60/c96205c65e6a4905b2f3c039f02c68d9/FLAG636f58c9a [2020-11-28 07:23:54,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/data/8a7fe1f60/c96205c65e6a4905b2f3c039f02c68d9 [2020-11-28 07:23:54,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:23:54,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:23:54,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:23:54,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:23:54,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:23:54,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760ab2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54, skipping insertion in model container [2020-11-28 07:23:54,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:23:54,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:23:54,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:23:54,350 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:23:54,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:23:54,390 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:23:54,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54 WrapperNode [2020-11-28 07:23:54,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:23:54,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:23:54,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:23:54,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:23:54,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:23:54,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:23:54,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:23:54,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:23:54,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... [2020-11-28 07:23:54,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:23:54,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:23:54,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:23:54,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:23:54,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/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 [2020-11-28 07:23:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:23:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:23:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:23:54,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:23:54,548 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-11-28 07:23:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-11-28 07:23:55,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:23:55,049 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:23:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:55 BoogieIcfgContainer [2020-11-28 07:23:55,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:23:55,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:23:55,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:23:55,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:23:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:23:54" (1/3) ... [2020-11-28 07:23:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55db6da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:23:55, skipping insertion in model container [2020-11-28 07:23:55,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:23:54" (2/3) ... [2020-11-28 07:23:55,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55db6da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:23:55, skipping insertion in model container [2020-11-28 07:23:55,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:55" (3/3) ... [2020-11-28 07:23:55,060 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-11-28 07:23:55,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:23:55,075 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:23:55,087 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:23:55,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:23:55,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:23:55,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:23:55,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:23:55,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:23:55,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:23:55,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:23:55,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:23:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 07:23:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:23:55,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:55,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:23:55,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1837646603, now seen corresponding path program 1 times [2020-11-28 07:23:55,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:55,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392818793] [2020-11-28 07:23:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:55,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392818793] [2020-11-28 07:23:55,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:55,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:23:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649672290] [2020-11-28 07:23:55,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:23:55,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:55,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:23:55,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:55,434 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-11-28 07:23:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:55,649 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-11-28 07:23:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:23:55,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:23:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:55,660 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:23:55,661 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:23:55,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:23:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:23:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 07:23:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:23:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-11-28 07:23:55,702 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2020-11-28 07:23:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:55,702 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-28 07:23:55,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:23:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-11-28 07:23:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:23:55,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:55,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:23:55,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:23:55,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash -978005234, now seen corresponding path program 1 times [2020-11-28 07:23:55,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:55,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583635776] [2020-11-28 07:23:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:23:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:23:55,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583635776] [2020-11-28 07:23:55,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:23:55,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:23:55,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604522328] [2020-11-28 07:23:55,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:23:55,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:23:55,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:23:55,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:23:55,798 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2020-11-28 07:23:55,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:23:55,897 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-11-28 07:23:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:23:55,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:23:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:23:55,898 INFO L225 Difference]: With dead ends: 31 [2020-11-28 07:23:55,898 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:23:55,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:23:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:23:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 07:23:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:23:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 07:23:55,904 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-11-28 07:23:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:23:55,905 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 07:23:55,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:23:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 07:23:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:23:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:23:55,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:23:55,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:23:55,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:23:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:23:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1974332951, now seen corresponding path program 1 times [2020-11-28 07:23:55,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:23:55,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755980561] [2020-11-28 07:23:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:23:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:23:55,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:23:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:23:55,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:23:55,992 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:23:55,992 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:23:55,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:23:56,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:23:56 BoogieIcfgContainer [2020-11-28 07:23:56,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:23:56,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:23:56,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:23:56,023 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:23:56,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:23:55" (3/4) ... [2020-11-28 07:23:56,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:23:56,099 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cdb70e80-9ec5-4099-8514-402c1f2ec517/bin/utaipan/witness.graphml [2020-11-28 07:23:56,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:23:56,101 INFO L168 Benchmark]: Toolchain (without parser) took 1990.34 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 58.9 MB in the beginning and 95.7 MB in the end (delta: -36.8 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,102 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:23:56,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.42 ms. Allocated memory is still 90.2 MB. Free memory was 58.8 MB in the beginning and 68.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:23:56,103 INFO L168 Benchmark]: Boogie Preprocessor took 34.52 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 66.7 MB in the end (delta: 908.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,104 INFO L168 Benchmark]: RCFGBuilder took 581.60 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 52.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,104 INFO L168 Benchmark]: TraceAbstraction took 969.54 ms. Allocated memory is still 90.2 MB. Free memory was 51.5 MB in the beginning and 31.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,105 INFO L168 Benchmark]: Witness Printer took 76.68 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 31.2 MB in the beginning and 95.7 MB in the end (delta: -64.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:23:56,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.42 ms. Allocated memory is still 90.2 MB. Free memory was 58.8 MB in the beginning and 68.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.82 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.52 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 66.7 MB in the end (delta: 908.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 581.60 ms. Allocated memory is still 90.2 MB. Free memory was 66.2 MB in the beginning and 52.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 969.54 ms. Allocated memory is still 90.2 MB. Free memory was 51.5 MB in the beginning and 31.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 76.68 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 31.2 MB in the beginning and 95.7 MB in the end (delta: -64.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) [L3] __assert_fail("0", "Addition02.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 28 SDslu, 60 SDs, 0 SdLazy, 118 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...