./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Singapore_plus.c --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for overflows
Using default analysis
Version 8d31f386
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/Singapore_plus.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 77bbe6e41bc18d2251402b3dafc3ae4df1f7b97b
..................................................................................................................................................................................................................................
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 0.2.1-wip.dd.multireach-323-8d31f38
[2021-07-06 14:55:22,523 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-07-06 14:55:22,524 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-07-06 14:55:22,552 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-07-06 14:55:22,553 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-07-06 14:55:22,554 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-07-06 14:55:22,557 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-07-06 14:55:22,559 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-07-06 14:55:22,562 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-07-06 14:55:22,564 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-07-06 14:55:22,564 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-07-06 14:55:22,566 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-07-06 14:55:22,567 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-07-06 14:55:22,570 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-07-06 14:55:22,571 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-07-06 14:55:22,572 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-07-06 14:55:22,575 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-07-06 14:55:22,575 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-07-06 14:55:22,576 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-07-06 14:55:22,581 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-07-06 14:55:22,584 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-07-06 14:55:22,585 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-07-06 14:55:22,585 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-07-06 14:55:22,586 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-07-06 14:55:22,588 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-07-06 14:55:22,591 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-07-06 14:55:22,591 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-07-06 14:55:22,592 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-07-06 14:55:22,593 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-07-06 14:55:22,593 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-07-06 14:55:22,593 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-07-06 14:55:22,594 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-07-06 14:55:22,595 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-07-06 14:55:22,596 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-07-06 14:55:22,597 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-07-06 14:55:22,598 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-07-06 14:55:22,598 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-07-06 14:55:22,598 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-07-06 14:55:22,598 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-07-06 14:55:22,599 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-07-06 14:55:22,600 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-07-06 14:55:22,602 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2021-07-06 14:55:22,621 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-06 14:55:22,622 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-06 14:55:22,623 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-06 14:55:22,624 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-06 14:55:22,624 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-06 14:55:22,625 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-06 14:55:22,625 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-06 14:55:22,625 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2021-07-06 14:55:22,626 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-06 14:55:22,626 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-06 14:55:22,626 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-06 14:55:22,626 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-06 14:55:22,626 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-06 14:55:22,626 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-06 14:55:22,627 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-06 14:55:22,627 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-06 14:55:22,627 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-06 14:55:22,627 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-06 14:55:22,627 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-06 14:55:22,627 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-06 14:55:22,628 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-06 14:55:22,628 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-07-06 14:55:22,628 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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 -> 77bbe6e41bc18d2251402b3dafc3ae4df1f7b97b
[2021-07-06 14:55:22,898 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-06 14:55:22,917 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-06 14:55:22,919 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-06 14:55:22,920 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-07-06 14:55:22,920 INFO  L275        PluginConnector]: CDTParser initialized
[2021-07-06 14:55:22,921 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Singapore_plus.c
[2021-07-06 14:55:22,963 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80/FLAG859d5746a
[2021-07-06 14:55:23,297 INFO  L306              CDTParser]: Found 1 translation units.
[2021-07-06 14:55:23,297 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Singapore_plus.c
[2021-07-06 14:55:23,301 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80/FLAG859d5746a
[2021-07-06 14:55:23,741 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80
[2021-07-06 14:55:23,743 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-06 14:55:23,745 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-07-06 14:55:23,747 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-07-06 14:55:23,747 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-07-06 14:55:23,759 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-07-06 14:55:23,759 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,760 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730df78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23, skipping insertion in model container
[2021-07-06 14:55:23,761 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,765 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-07-06 14:55:23,773 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-07-06 14:55:23,856 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-07-06 14:55:23,859 INFO  L203         MainTranslator]: Completed pre-run
[2021-07-06 14:55:23,867 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-07-06 14:55:23,875 INFO  L208         MainTranslator]: Completed translation
[2021-07-06 14:55:23,875 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23 WrapperNode
[2021-07-06 14:55:23,875 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-07-06 14:55:23,876 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-06 14:55:23,876 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-06 14:55:23,877 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-06 14:55:23,881 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,907 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,918 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-06 14:55:23,919 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-06 14:55:23,919 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-06 14:55:23,919 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-06 14:55:23,924 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,924 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,925 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,925 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,926 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,928 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,931 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,932 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-06 14:55:23,932 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-06 14:55:23,932 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-06 14:55:23,932 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-06 14:55:23,933 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ...
[2021-07-06 14:55:23,937 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-06 14:55:23,942 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-07-06 14:55:23,951 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-07-06 14:55:23,967 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-07-06 14:55:23,994 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-06 14:55:23,994 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-06 14:55:24,165 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-06 14:55:24,167 INFO  L299             CfgBuilder]: Removed 5 assume(true) statements.
[2021-07-06 14:55:24,168 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24 BoogieIcfgContainer
[2021-07-06 14:55:24,168 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-06 14:55:24,169 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-06 14:55:24,170 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-06 14:55:24,172 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-06 14:55:24,172 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 02:55:23" (1/3) ...
[2021-07-06 14:55:24,173 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc72815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:24, skipping insertion in model container
[2021-07-06 14:55:24,173 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (2/3) ...
[2021-07-06 14:55:24,173 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc72815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:24, skipping insertion in model container
[2021-07-06 14:55:24,173 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24" (3/3) ...
[2021-07-06 14:55:24,174 INFO  L111   eAbstractionObserver]: Analyzing ICFG Singapore_plus.c
[2021-07-06 14:55:24,181 INFO  L198   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-06 14:55:24,181 INFO  L158   ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations.
[2021-07-06 14:55:24,219 INFO  L328      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ========
[2021-07-06 14:55:24,226 INFO  L329      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-07-06 14:55:24,227 INFO  L330      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-07-06 14:55:24,239 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-06 14:55:24,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2021-07-06 14:55:24,243 INFO  L517         BasicCegarLoop]: Found error trace
[2021-07-06 14:55:24,243 INFO  L525         BasicCegarLoop]: trace histogram [1, 1]
[2021-07-06 14:55:24,244 INFO  L374      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2021-07-06 14:55:24,249 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-06 14:55:24,249 INFO  L82        PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times
[2021-07-06 14:55:24,255 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-06 14:55:24,255 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063667882]
[2021-07-06 14:55:24,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-06 14:55:24,256 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-07-06 14:55:24,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-07-06 14:55:24,318 INFO  L224             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-07-06 14:55:24,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-07-06 14:55:24,327 INFO  L224             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-07-06 14:55:24,337 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-07-06 14:55:24,339 INFO  L639         BasicCegarLoop]: Counterexample is feasible
[2021-07-06 14:55:24,342 WARN  L471      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-06 14:55:24,343 WARN  L182   nStatisticsGenerator]: total relevant statements: 0
[2021-07-06 14:55:24,346 INFO  L303   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was UNSAFE (1/8)
[2021-07-06 14:55:24,358 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 02:55:24 BoogieIcfgContainer
[2021-07-06 14:55:24,358 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-07-06 14:55:24,360 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-07-06 14:55:24,360 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-07-06 14:55:24,360 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-07-06 14:55:24,361 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24" (3/4) ...
[2021-07-06 14:55:24,362 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-07-06 14:55:24,390 INFO  L141         WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2021-07-06 14:55:24,390 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-07-06 14:55:24,392 INFO  L168              Benchmark]: Toolchain (without parser) took 646.57 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 48.0 MB in the beginning and 60.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,393 INFO  L168              Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,393 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 128.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 39.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,394 INFO  L168              Benchmark]: Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 51.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,394 INFO  L168              Benchmark]: Boogie Preprocessor took 12.89 ms. Allocated memory is still 67.1 MB. Free memory was 51.7 MB in the beginning and 50.8 MB in the end (delta: 834.7 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,396 INFO  L168              Benchmark]: RCFGBuilder took 236.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 40.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,397 INFO  L168              Benchmark]: TraceAbstraction took 188.72 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 62.4 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,397 INFO  L168              Benchmark]: Witness Printer took 30.74 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-07-06 14:55:24,401 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 128.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 39.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 51.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 12.89 ms. Allocated memory is still 67.1 MB. Free memory was 51.7 MB in the beginning and 50.8 MB in the end (delta: 834.7 kB). There was no memory consumed. Max. memory is 16.1 GB.
 * RCFGBuilder took 236.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 40.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 188.72 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 62.4 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
 * Witness Printer took 30.74 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 16]: integer overflow possible
    integer overflow possible
We found a FailurePath: 
[L12]        int x;
[L13]        int y;
[L14]        x = __VERIFIER_nondet_int()
[L15]        y = __VERIFIER_nondet_int()
[L16]        x + y

  - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW
    CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 128.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.4ms SsaConstructionTime, 13.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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!
[2021-07-06 14:55:24,432 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...