./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/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 64bit --witnessprinter.graph.data.programhash 7b8d2b598ac3326e286016998f443939dfd4be1d ....................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-03 12:39:45,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:39:45,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:39:45,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:39:45,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:39:45,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:39:45,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:39:45,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:39:45,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:39:45,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:39:45,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:39:45,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:39:45,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:39:45,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:39:45,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:39:45,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:39:45,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:39:45,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:39:45,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:39:45,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:39:45,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:39:45,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:39:45,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:39:45,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:39:45,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:39:45,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:39:45,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:39:45,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:39:45,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:39:45,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:39:45,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:39:45,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:39:45,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:39:45,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:39:45,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:39:45,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:39:45,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:39:45,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:39:45,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:39:45,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:39:45,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:39:45,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:39:45,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:39:45,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:39:45,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:39:45,359 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:39:45,359 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:39:45,359 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:39:45,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:39:45,360 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:39:45,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:39:45,360 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:39:45,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:39:45,362 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:39:45,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:39:45,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:39:45,363 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:39:45,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:39:45,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:39:45,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:39:45,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:39:45,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:39:45,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:39:45,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:39:45,365 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:39:45,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:39:45,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:39:45,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:39:45,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:39:45,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:39:45,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:39:45,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:39:45,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:39:45,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:39:45,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:39:45,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:39:45,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:39:45,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:39:45,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:39:45,371 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_2d66e711-8281-4cc0-8a97-1e6a43b9237e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b8d2b598ac3326e286016998f443939dfd4be1d [2020-12-03 12:39:45,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:39:45,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:39:45,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:39:45,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:39:45,655 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:39:45,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2020-12-03 12:39:45,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/data/b164c2a40/8069cf48b8ba43648c108746d8ab6f77/FLAG39b03e44e [2020-12-03 12:39:46,200 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:39:46,200 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2020-12-03 12:39:46,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/data/b164c2a40/8069cf48b8ba43648c108746d8ab6f77/FLAG39b03e44e [2020-12-03 12:39:46,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/data/b164c2a40/8069cf48b8ba43648c108746d8ab6f77 [2020-12-03 12:39:46,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:39:46,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:39:46,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:46,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:39:46,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:39:46,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1932226d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46, skipping insertion in model container [2020-12-03 12:39:46,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:39:46,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:39:46,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:46,897 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:39:46,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:39:46,934 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:39:46,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46 WrapperNode [2020-12-03 12:39:46,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:39:46,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:46,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:39:46,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:39:46,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:39:46,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:39:46,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:39:46,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:39:46,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:46,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:47,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:47,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... [2020-12-03 12:39:47,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:39:47,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:39:47,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:39:47,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:39:47,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/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 [2020-12-03 12:39:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:39:47,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:39:47,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:39:47,438 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-03 12:39:47,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:47 BoogieIcfgContainer [2020-12-03 12:39:47,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:39:47,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:39:47,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:39:47,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:39:47,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:39:46" (1/3) ... [2020-12-03 12:39:47,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4087b714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:47, skipping insertion in model container [2020-12-03 12:39:47,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:39:46" (2/3) ... [2020-12-03 12:39:47,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4087b714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:39:47, skipping insertion in model container [2020-12-03 12:39:47,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:47" (3/3) ... [2020-12-03 12:39:47,461 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig2a.c [2020-12-03 12:39:47,479 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:39:47,484 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-03 12:39:47,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-03 12:39:47,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:39:47,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:39:47,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:39:47,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:39:47,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:39:47,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:39:47,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:39:47,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:39:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-03 12:39:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 12:39:47,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:47,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-03 12:39:47,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:39:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-12-03 12:39:47,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:47,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147157823] [2020-12-03 12:39:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:47,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147157823] [2020-12-03 12:39:47,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:39:47,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:39:47,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817793112] [2020-12-03 12:39:47,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:39:47,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:39:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:47,740 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-12-03 12:39:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:47,840 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-12-03 12:39:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:39:47,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-03 12:39:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:47,858 INFO L225 Difference]: With dead ends: 47 [2020-12-03 12:39:47,859 INFO L226 Difference]: Without dead ends: 22 [2020-12-03 12:39:47,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:47,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-03 12:39:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-03 12:39:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-03 12:39:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-03 12:39:47,897 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 3 [2020-12-03 12:39:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:47,897 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-03 12:39:47,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:39:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-03 12:39:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:39:47,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:47,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:39:47,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:39:47,899 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:39:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:47,900 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-12-03 12:39:47,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:47,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067132224] [2020-12-03 12:39:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:39:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:39:47,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067132224] [2020-12-03 12:39:47,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:39:47,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:39:47,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22960559] [2020-12-03 12:39:47,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:39:47,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:39:47,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:39:47,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:47,928 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2020-12-03 12:39:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:39:47,959 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-03 12:39:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:39:47,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:39:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:39:47,961 INFO L225 Difference]: With dead ends: 22 [2020-12-03 12:39:47,961 INFO L226 Difference]: Without dead ends: 21 [2020-12-03 12:39:47,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:39:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-03 12:39:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-03 12:39:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-03 12:39:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-03 12:39:47,967 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 4 [2020-12-03 12:39:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:39:47,967 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-03 12:39:47,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:39:47,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-03 12:39:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:39:47,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:39:47,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:39:47,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:39:47,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:39:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:39:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-12-03 12:39:47,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:39:47,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318151059] [2020-12-03 12:39:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:39:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:47,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:39:48,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:39:48,037 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:39:48,041 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:39:48,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:39:48,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:39:48 BoogieIcfgContainer [2020-12-03 12:39:48,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:39:48,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:39:48,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:39:48,067 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:39:48,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:39:47" (3/4) ... [2020-12-03 12:39:48,071 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:39:48,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2d66e711-8281-4cc0-8a97-1e6a43b9237e/bin/utaipan/witness.graphml [2020-12-03 12:39:48,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:39:48,111 INFO L168 Benchmark]: Toolchain (without parser) took 1419.15 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 51.0 MB in the beginning and 63.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:48,114 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:48,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.08 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 60.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:48,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.69 ms. Allocated memory is still 81.8 MB. Free memory was 60.2 MB in the beginning and 58.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:48,121 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 ms. Allocated memory is still 81.8 MB. Free memory was 58.7 MB in the beginning and 57.8 MB in the end (delta: 944.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:48,125 INFO L168 Benchmark]: RCFGBuilder took 431.37 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 44.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:48,126 INFO L168 Benchmark]: TraceAbstraction took 623.81 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.8 MB in the beginning and 65.4 MB in the end (delta: -21.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:39:48,126 INFO L168 Benchmark]: Witness Printer took 42.08 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:39:48,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.08 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 60.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.69 ms. Allocated memory is still 81.8 MB. Free memory was 60.2 MB in the beginning and 58.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.63 ms. Allocated memory is still 81.8 MB. Free memory was 58.7 MB in the beginning and 57.8 MB in the end (delta: 944.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 431.37 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 44.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 623.81 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.8 MB in the beginning and 65.4 MB in the end (delta: -21.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.08 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE x >= 2 [L18] EXPR x - 1 [L18] x = x - 1 [L19] y + x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 20 SDslu, 6 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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...