./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/min_rf.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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-lit/min_rf.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 9442b91b34d1534e654ccb2ff614d1bcc5a78e4993d344efa390c901105881d4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:46:29,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:46:29,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:46:29,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:46:29,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:46:29,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:46:29,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:46:29,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:46:29,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:46:29,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:46:29,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:46:29,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:46:29,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:46:29,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:46:29,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:46:29,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:46:29,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:46:29,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:46:29,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:46:29,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:46:29,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:46:29,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:46:29,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:46:29,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:46:29,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:46:29,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:46:29,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:46:29,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:46:29,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:46:29,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:46:29,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:46:29,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:46:29,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:46:29,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:46:29,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:46:29,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:46:29,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:46:29,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:46:29,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:46:29,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:46:29,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:46:29,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-21 20:46:29,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:46:29,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:46:29,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:46:29,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:46:29,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:46:29,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:46:29,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:46:29,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:46:29,330 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:46:29,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:46:29,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:46:29,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:46:29,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:46:29,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:46:29,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:46:29,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:46:29,342 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:46:29,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:46:29,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:46:29,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:46:29,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:46:29,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:46:29,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:46:29,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:46:29,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:46:29,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:46:29,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:46:29,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:46:29,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:46:29,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:46:29,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:46:29,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9442b91b34d1534e654ccb2ff614d1bcc5a78e4993d344efa390c901105881d4 [2021-12-21 20:46:29,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:46:29,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:46:29,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:46:29,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:46:29,603 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:46:29,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/min_rf.c [2021-12-21 20:46:29,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d47ef2b/523a73ba2ce44145807d07381da591ab/FLAG573ae2292 [2021-12-21 20:46:30,053 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:46:30,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/min_rf.c [2021-12-21 20:46:30,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d47ef2b/523a73ba2ce44145807d07381da591ab/FLAG573ae2292 [2021-12-21 20:46:30,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d47ef2b/523a73ba2ce44145807d07381da591ab [2021-12-21 20:46:30,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:46:30,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:46:30,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:46:30,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:46:30,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:46:30,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a87955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30, skipping insertion in model container [2021-12-21 20:46:30,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:46:30,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:46:30,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:46:30,237 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:46:30,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:46:30,260 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:46:30,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30 WrapperNode [2021-12-21 20:46:30,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:46:30,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:46:30,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:46:30,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:46:30,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,286 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-12-21 20:46:30,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:46:30,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:46:30,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:46:30,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:46:30,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:46:30,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:46:30,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:46:30,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:46:30,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (1/1) ... [2021-12-21 20:46:30,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:46:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:46:30,345 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) [2021-12-21 20:46:30,348 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 [2021-12-21 20:46:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:46:30,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:46:30,423 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:46:30,424 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:46:30,525 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:46:30,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:46:30,532 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 20:46:30,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:46:30 BoogieIcfgContainer [2021-12-21 20:46:30,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:46:30,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:46:30,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:46:30,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:46:30,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:46:30" (1/3) ... [2021-12-21 20:46:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d7060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:46:30, skipping insertion in model container [2021-12-21 20:46:30,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:46:30" (2/3) ... [2021-12-21 20:46:30,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d7060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:46:30, skipping insertion in model container [2021-12-21 20:46:30,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:46:30" (3/3) ... [2021-12-21 20:46:30,547 INFO L111 eAbstractionObserver]: Analyzing ICFG min_rf.c [2021-12-21 20:46:30,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:46:30,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-12-21 20:46:30,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:46:30,596 INFO L339 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 20:46:30,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-12-21 20:46:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 33 states have internal predecessors, (37), 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) [2021-12-21 20:46:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 20:46:30,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:46:30,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:46:30,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-12-21 20:46:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:46:30,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722443, now seen corresponding path program 1 times [2021-12-21 20:46:30,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:46:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953222278] [2021-12-21 20:46:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:46:30,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:46:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:46:30,737 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 20:46:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:46:30,767 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 20:46:30,768 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 20:46:30,770 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2021-12-21 20:46:30,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2021-12-21 20:46:30,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2021-12-21 20:46:30,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2021-12-21 20:46:30,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2021-12-21 20:46:30,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2021-12-21 20:46:30,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2021-12-21 20:46:30,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2021-12-21 20:46:30,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2021-12-21 20:46:30,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2021-12-21 20:46:30,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2021-12-21 20:46:30,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2021-12-21 20:46:30,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:46:30,782 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-21 20:46:30,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 20:46:30,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:46:30 BoogieIcfgContainer [2021-12-21 20:46:30,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 20:46:30,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 20:46:30,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 20:46:30,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 20:46:30,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:46:30" (3/4) ... [2021-12-21 20:46:30,808 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 20:46:30,848 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 20:46:30,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 20:46:30,849 INFO L158 Benchmark]: Toolchain (without parser) took 743.61ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 62.3MB in the beginning and 81.7MB in the end (delta: -19.3MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-21 20:46:30,850 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:46:30,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.35ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 53.3MB in the end (delta: 8.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 20:46:30,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:46:30,852 INFO L158 Benchmark]: Boogie Preprocessor took 23.41ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 51.0MB in the end (delta: 905.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:46:30,852 INFO L158 Benchmark]: RCFGBuilder took 222.10ms. Allocated memory is still 83.9MB. Free memory was 51.0MB in the beginning and 41.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 20:46:30,853 INFO L158 Benchmark]: TraceAbstraction took 268.15ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 41.0MB in the beginning and 83.1MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:46:30,853 INFO L158 Benchmark]: Witness Printer took 43.08ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:46:30,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.35ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 53.3MB in the end (delta: 8.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.18ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.41ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 51.0MB in the end (delta: 905.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.10ms. Allocated memory is still 83.9MB. Free memory was 51.0MB in the beginning and 41.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 268.15ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 41.0MB in the beginning and 83.1MB in the end (delta: -42.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.08ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 81.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 32]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x,y; [L16] int z; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND TRUE y > 0 && x > 0 VAL [x=1, y=2147483647] [L22] COND FALSE !(x>y) [L25] z = x VAL [x=1, y=2147483647, z=1] [L27] COND FALSE !(__VERIFIER_nondet_int() != 0) [L32] y+x VAL [x=1, y=2147483647, z=1] - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 32]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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! [2021-12-21 20:46:30,896 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)