./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 66086dde0b191c29902f344504ecd9e9745e5c48 ............................................................................................................................................................................................................................................................ 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 0.1.24-6b5699a [2019-11-25 08:52:06,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:06,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:06,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:06,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:06,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:06,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:06,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:06,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:06,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:06,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:06,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:06,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:06,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:06,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:06,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:06,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:06,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:06,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:06,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:06,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:06,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:06,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:06,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:06,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:06,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:06,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:06,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:06,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:06,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:06,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:06,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:06,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:06,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:06,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:06,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:06,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:06,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:06,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:06,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:06,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:06,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:52:06,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:06,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:06,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:06,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:06,353 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:06,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:06,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:06,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:06,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:06,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:52:06,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:52:06,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:52:06,354 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:52:06,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:06,355 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:06,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:52:06,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:06,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:06,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:52:06,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:52:06,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:52:06,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:06,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:52:06,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:52:06,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:06,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:52:06,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:52:06,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66086dde0b191c29902f344504ecd9e9745e5c48 [2019-11-25 08:52:06,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:06,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:06,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:06,548 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:06,548 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:06,549 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-11-25 08:52:06,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/data/2ef7ed0c8/9e35e59069f345b38450394ec8392fe6/FLAGf8599eee1 [2019-11-25 08:52:07,020 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:07,022 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-11-25 08:52:07,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/data/2ef7ed0c8/9e35e59069f345b38450394ec8392fe6/FLAGf8599eee1 [2019-11-25 08:52:07,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/data/2ef7ed0c8/9e35e59069f345b38450394ec8392fe6 [2019-11-25 08:52:07,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:07,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:07,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:07,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:07,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:07,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbd278d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07, skipping insertion in model container [2019-11-25 08:52:07,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:07,435 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:07,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:07,618 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:07,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:07,713 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:07,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07 WrapperNode [2019-11-25 08:52:07,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:07,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:07,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:07,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:07,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:07,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:07,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:07,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:07,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... [2019-11-25 08:52:07,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:07,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:07,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:07,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:07,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:52:07,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:07,988 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:07,989 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:52:07,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:07 BoogieIcfgContainer [2019-11-25 08:52:07,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:07,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:52:07,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:52:07,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:52:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:52:07" (1/3) ... [2019-11-25 08:52:07,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5188c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:07, skipping insertion in model container [2019-11-25 08:52:07,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:07" (2/3) ... [2019-11-25 08:52:07,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5188c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:52:07, skipping insertion in model container [2019-11-25 08:52:07,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:07" (3/3) ... [2019-11-25 08:52:07,998 INFO L109 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2019-11-25 08:52:08,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:52:08,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:52:08,021 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:52:08,045 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:52:08,045 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:52:08,046 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:52:08,046 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:08,046 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:08,046 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:52:08,046 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:08,046 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:52:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:52:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:52:08,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:08,068 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:52:08,068 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:52:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:08,073 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-25 08:52:08,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:08,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207361785] [2019-11-25 08:52:08,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:08,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207361785] [2019-11-25 08:52:08,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:08,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:52:08,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149008195] [2019-11-25 08:52:08,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:52:08,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:08,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:52:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:52:08,225 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-25 08:52:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:08,282 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-25 08:52:08,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:52:08,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-25 08:52:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:52:08,290 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:52:08,290 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:52:08,293 INFO L630 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 [2019-11-25 08:52:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:52:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-25 08:52:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:52:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-25 08:52:08,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-25 08:52:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:52:08,323 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-25 08:52:08,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:52:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-25 08:52:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:52:08,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:52:08,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:52:08,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:52:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-25 08:52:08,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:08,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223899898] [2019-11-25 08:52:08,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:08,369 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:08,370 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:52:08,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:52:08 BoogieIcfgContainer [2019-11-25 08:52:08,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:52:08,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:08,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:08,388 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:08,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:07" (3/4) ... [2019-11-25 08:52:08,390 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:52:08,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70ab0a7c-2a18-4536-b95d-a0ef768adbee/bin/uautomizer/witness.graphml [2019-11-25 08:52:08,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:08,426 INFO L168 Benchmark]: Toolchain (without parser) took 1026.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:08,427 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:08,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:08,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:08,428 INFO L168 Benchmark]: Boogie Preprocessor took 14.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:08,429 INFO L168 Benchmark]: RCFGBuilder took 228.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:08,429 INFO L168 Benchmark]: TraceAbstraction took 395.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:08,430 INFO L168 Benchmark]: Witness Printer took 37.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:08,433 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 395.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Witness Printer took 37.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x [L18] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...