./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non.c -s /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2355a4d05f76bd59f1e3cc71c2462258521b54a0 ................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:58:34,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:58:34,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:58:34,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:58:34,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:58:34,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:58:34,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:58:34,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:58:34,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:58:34,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:58:34,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:58:34,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:58:34,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:58:34,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:58:34,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:58:34,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:58:34,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:58:34,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:58:34,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:58:34,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:58:34,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:58:34,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:58:34,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:58:34,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:58:34,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:58:34,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:58:34,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:58:34,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:58:34,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:58:34,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:58:34,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:58:34,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:58:34,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:58:34,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:58:34,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:58:34,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:58:34,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:58:34,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:58:34,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:58:34,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:58:34,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:58:34,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 01:58:34,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:58:34,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:58:34,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:58:34,541 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:58:34,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:58:34,541 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:58:34,542 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:58:34,542 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:58:34,543 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:58:34,543 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:58:34,543 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:58:34,543 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:58:34,544 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:58:34,544 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:58:34,545 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:58:34,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:58:34,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:58:34,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:58:34,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:58:34,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:58:34,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:58:34,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:58:34,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:58:34,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:58:34,549 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:58:34,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:58:34,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:58:34,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:58:34,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:58:34,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:58:34,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:58:34,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:58:34,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:34,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:58:34,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:58:34,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:58:34,553 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:58:34,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:58:34,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:58:34,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:58:34,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:58:34,554 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_187f89af-c066-4311-9d26-ea9bd17217ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2355a4d05f76bd59f1e3cc71c2462258521b54a0 [2020-11-30 01:58:34,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:58:34,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:58:34,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:58:34,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:58:34,936 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:58:34,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/../../sv-benchmarks/c/recursive-simple/sum_non.c [2020-11-30 01:58:35,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/data/97cc52197/58d844e8767c4934b46469cafbfde91d/FLAGc9460536c [2020-11-30 01:58:35,569 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:58:35,570 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/sv-benchmarks/c/recursive-simple/sum_non.c [2020-11-30 01:58:35,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/data/97cc52197/58d844e8767c4934b46469cafbfde91d/FLAGc9460536c [2020-11-30 01:58:35,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/data/97cc52197/58d844e8767c4934b46469cafbfde91d [2020-11-30 01:58:35,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:58:35,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:58:35,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:35,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:58:35,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:58:35,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:35" (1/1) ... [2020-11-30 01:58:35,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29237182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:35, skipping insertion in model container [2020-11-30 01:58:35,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:35" (1/1) ... [2020-11-30 01:58:35,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:58:35,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:58:36,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:36,135 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:58:36,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:36,170 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:58:36,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36 WrapperNode [2020-11-30 01:58:36,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:36,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:36,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:58:36,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:58:36,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:36,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:58:36,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:58:36,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:58:36,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... [2020-11-30 01:58:36,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:58:36,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:58:36,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:58:36,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:58:36,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/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 [2020-11-30 01:58:36,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:58:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:58:36,322 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-30 01:58:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-30 01:58:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:58:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:58:36,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:58:36,791 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:58:36,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:36 BoogieIcfgContainer [2020-11-30 01:58:36,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:58:36,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:58:36,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:58:36,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:58:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:58:35" (1/3) ... [2020-11-30 01:58:36,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0008e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:36, skipping insertion in model container [2020-11-30 01:58:36,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:36" (2/3) ... [2020-11-30 01:58:36,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0008e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:36, skipping insertion in model container [2020-11-30 01:58:36,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:36" (3/3) ... [2020-11-30 01:58:36,811 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non.c [2020-11-30 01:58:36,822 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:58:36,826 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-30 01:58:36,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-30 01:58:36,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:58:36,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:58:36,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:58:36,865 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:58:36,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:58:36,865 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:58:36,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:58:36,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:58:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-30 01:58:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:58:36,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:36,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:58:36,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash 71429977, now seen corresponding path program 1 times [2020-11-30 01:58:36,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:36,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197181447] [2020-11-30 01:58:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:37,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197181447] [2020-11-30 01:58:37,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:37,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:58:37,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989328448] [2020-11-30 01:58:37,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:58:37,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:58:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:58:37,158 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-11-30 01:58:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:37,447 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-11-30 01:58:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:58:37,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-11-30 01:58:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:37,467 INFO L225 Difference]: With dead ends: 48 [2020-11-30 01:58:37,468 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 01:58:37,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:58:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 01:58:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-11-30 01:58:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:58:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-11-30 01:58:37,551 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2020-11-30 01:58:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:37,552 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-11-30 01:58:37,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:58:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-11-30 01:58:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:58:37,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:37,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:58:37,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:58:37,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:37,560 INFO L82 PathProgramCache]: Analyzing trace with hash 71430137, now seen corresponding path program 1 times [2020-11-30 01:58:37,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:37,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13173946] [2020-11-30 01:58:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:37,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13173946] [2020-11-30 01:58:37,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:37,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:58:37,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965070340] [2020-11-30 01:58:37,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:58:37,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:37,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:58:37,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:58:37,678 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2020-11-30 01:58:37,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:37,773 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-11-30 01:58:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:58:37,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-30 01:58:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:37,775 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:58:37,775 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 01:58:37,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:58:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 01:58:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 01:58:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:58:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-11-30 01:58:37,792 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2020-11-30 01:58:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:37,792 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-11-30 01:58:37,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:58:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-11-30 01:58:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:58:37,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:37,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:58:37,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:58:37,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2080637951, now seen corresponding path program 1 times [2020-11-30 01:58:37,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:37,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435565869] [2020-11-30 01:58:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:37,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:37,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:37,877 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:58:37,878 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:58:37,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:58:37,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:58:37 BoogieIcfgContainer [2020-11-30 01:58:37,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:58:37,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:58:37,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:58:37,919 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:58:37,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:36" (3/4) ... [2020-11-30 01:58:37,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:58:37,974 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_187f89af-c066-4311-9d26-ea9bd17217ce/bin/utaipan/witness.graphml [2020-11-30 01:58:37,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:58:37,976 INFO L168 Benchmark]: Toolchain (without parser) took 2073.41 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 57.8 MB in the beginning and 73.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:37,977 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:37,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.13 ms. Allocated memory is still 79.7 MB. Free memory was 57.6 MB in the beginning and 56.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:37,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:37,979 INFO L168 Benchmark]: Boogie Preprocessor took 23.12 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 54.0 MB in the end (delta: 928.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:37,980 INFO L168 Benchmark]: RCFGBuilder took 565.75 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 54.0 MB in the beginning and 88.3 MB in the end (delta: -34.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:37,981 INFO L168 Benchmark]: TraceAbstraction took 1113.36 ms. Allocated memory is still 109.1 MB. Free memory was 87.8 MB in the beginning and 74.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:37,982 INFO L168 Benchmark]: Witness Printer took 55.88 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:37,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 56.9 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.13 ms. Allocated memory is still 79.7 MB. Free memory was 57.6 MB in the beginning and 56.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 79.7 MB. Free memory was 56.4 MB in the beginning and 55.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.12 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 54.0 MB in the end (delta: 928.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 565.75 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 54.0 MB in the beginning and 88.3 MB in the end (delta: -34.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1113.36 ms. Allocated memory is still 109.1 MB. Free memory was 87.8 MB in the beginning and 74.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 55.88 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a = __VERIFIER_nondet_int(); [L16] int b = __VERIFIER_nondet_int(); [L17] CALL sum(a, b) VAL [\old(m)=-1, \old(n)=-2147483648] [L7] COND TRUE n <= 0 VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] [L8] m + n VAL [\old(m)=-1, \old(n)=-2147483648, m=-1, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 83 SDslu, 58 SDs, 0 SdLazy, 103 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 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...