./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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/AliasDarteFeautrierGonnord-SAS2010-ndecr.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 4dcf005a6e1e6e73e7cc641a540372bc424a31307930dd7dbed052b7a4d982de --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:42:08,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:42:08,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:42:08,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:42:08,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:42:08,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:42:08,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:42:08,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:42:08,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:42:08,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:42:08,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:42:08,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:42:08,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:42:08,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:42:08,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:42:08,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:42:08,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:42:08,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:42:08,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:42:08,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:42:08,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:42:08,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:42:08,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:42:08,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:42:08,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:42:08,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:42:08,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:42:08,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:42:08,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:42:08,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:42:08,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:42:08,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:42:08,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:42:08,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:42:08,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:42:08,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:42:08,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:42:08,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:42:08,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:42:08,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:42:08,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:42:08,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:42:08,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:42:08,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:42:08,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:42:08,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:42:08,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:42:08,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:42:08,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:42:08,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:42:08,459 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:42:08,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:42:08,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:42:08,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:42:08,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:42:08,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:42:08,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:42:08,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:42:08,461 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:42:08,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:42:08,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:42:08,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:42:08,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:42:08,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:42:08,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:42:08,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:08,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:42:08,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:42:08,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:42:08,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:42:08,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:42:08,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:42:08,463 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dcf005a6e1e6e73e7cc641a540372bc424a31307930dd7dbed052b7a4d982de [2021-12-28 08:42:08,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:42:08,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:42:08,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:42:08,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:42:08,781 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:42:08,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-12-28 08:42:08,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d088cf9c0/ef3d53ad54ba4597a1bd343b2510b501/FLAGc64616086 [2021-12-28 08:42:09,162 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:42:09,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-12-28 08:42:09,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d088cf9c0/ef3d53ad54ba4597a1bd343b2510b501/FLAGc64616086 [2021-12-28 08:42:09,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d088cf9c0/ef3d53ad54ba4597a1bd343b2510b501 [2021-12-28 08:42:09,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:42:09,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:42:09,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:09,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:42:09,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:42:09,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145138dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09, skipping insertion in model container [2021-12-28 08:42:09,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:42:09,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:42:09,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:09,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:42:09,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:09,326 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:42:09,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09 WrapperNode [2021-12-28 08:42:09,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:09,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:09,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:42:09,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:42:09,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,357 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-12-28 08:42:09,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:09,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:42:09,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:42:09,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:42:09,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:42:09,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:42:09,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:42:09,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:42:09,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (1/1) ... [2021-12-28 08:42:09,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:09,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:09,424 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) [2021-12-28 08:42:09,442 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 [2021-12-28 08:42:09,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:42:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:42:09,492 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:42:09,494 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:42:09,592 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:42:09,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:42:09,597 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 08:42:09,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:09 BoogieIcfgContainer [2021-12-28 08:42:09,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:42:09,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:42:09,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:42:09,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:42:09,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:42:09" (1/3) ... [2021-12-28 08:42:09,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e23301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:09, skipping insertion in model container [2021-12-28 08:42:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:09" (2/3) ... [2021-12-28 08:42:09,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e23301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:09, skipping insertion in model container [2021-12-28 08:42:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:09" (3/3) ... [2021-12-28 08:42:09,608 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-ndecr.c [2021-12-28 08:42:09,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:42:09,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 08:42:09,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:42:09,656 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 [2021-12-28 08:42:09,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 08:42:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-12-28 08:42:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-28 08:42:09,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:09,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-28 08:42:09,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-12-28 08:42:09,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:09,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569552212] [2021-12-28 08:42:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:09,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:09,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:09,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569552212] [2021-12-28 08:42:09,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569552212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:09,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:09,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:09,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185289967] [2021-12-28 08:42:09,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:09,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:09,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:09,837 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-28 08:42:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:09,864 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-12-28 08:42:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2021-12-28 08:42:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:09,876 INFO L225 Difference]: With dead ends: 19 [2021-12-28 08:42:09,876 INFO L226 Difference]: Without dead ends: 10 [2021-12-28 08:42:09,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:09,892 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:09,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-28 08:42:09,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-28 08:42:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-12-28 08:42:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-28 08:42:09,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2021-12-28 08:42:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:09,928 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-28 08:42:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-12-28 08:42:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-28 08:42:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 08:42:09,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:09,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 08:42:09,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:42:09,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2021-12-28 08:42:09,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:09,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80403279] [2021-12-28 08:42:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:09,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:42:09,943 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 08:42:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:42:09,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 08:42:09,965 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 08:42:09,966 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-28 08:42:09,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-28 08:42:09,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-28 08:42:09,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-28 08:42:09,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:42:09,971 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 08:42:09,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 08:42:09,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 08:42:09 BoogieIcfgContainer [2021-12-28 08:42:09,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 08:42:09,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 08:42:09,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 08:42:09,991 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 08:42:09,992 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:09" (3/4) ... [2021-12-28 08:42:09,993 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-28 08:42:10,017 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 08:42:10,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 08:42:10,019 INFO L158 Benchmark]: Toolchain (without parser) took 836.98ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 46.7MB in the beginning and 45.2MB in the end (delta: 1.4MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,019 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:42:10,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.03ms. Allocated memory is still 62.9MB. Free memory was 46.5MB in the beginning and 37.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 47.8MB in the end (delta: -10.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,020 INFO L158 Benchmark]: Boogie Preprocessor took 17.86ms. Allocated memory is still 62.9MB. Free memory was 47.8MB in the beginning and 47.0MB in the end (delta: 780.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,021 INFO L158 Benchmark]: RCFGBuilder took 221.25ms. Allocated memory is still 62.9MB. Free memory was 46.7MB in the beginning and 38.9MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,023 INFO L158 Benchmark]: TraceAbstraction took 386.30ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 46.9MB in the end (delta: -8.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,023 INFO L158 Benchmark]: Witness Printer took 26.77ms. Allocated memory is still 75.5MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:42:10,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.03ms. Allocated memory is still 62.9MB. Free memory was 46.5MB in the beginning and 37.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 47.8MB in the end (delta: -10.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.86ms. Allocated memory is still 62.9MB. Free memory was 47.8MB in the beginning and 47.0MB in the end (delta: 780.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.25ms. Allocated memory is still 62.9MB. Free memory was 46.7MB in the beginning and 38.9MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 386.30ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 46.9MB in the end (delta: -8.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 26.77ms. Allocated memory is still 75.5MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.5MB). 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: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, n; [L15] n = __VERIFIER_nondet_int() [L16] n - 1 VAL [n=-2147483648] - UnprovableResult [Line: 16]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: 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, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0 StatesRemovedByMinimization, 0 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, 4 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-28 08:42:10,079 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)