./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec 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/CookSeeZuleger-TACAS2013-Fig8b.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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d ................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:55:02,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:55:02,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:55:02,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:55:02,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:55:02,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:55:02,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:55:02,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:55:02,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:55:02,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:55:02,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:55:02,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:55:02,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:55:02,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:55:02,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:55:02,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:55:02,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:55:02,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:55:02,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:55:02,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:55:02,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:55:02,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:55:02,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:55:02,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:55:02,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:55:02,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:55:02,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:55:02,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:55:02,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:55:02,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:55:02,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:55:02,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:55:02,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:55:02,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:55:02,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:55:02,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:55:02,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:55:02,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:55:02,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:55:02,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:55:02,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:55:02,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:55:02,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:55:02,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:55:02,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:55:02,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:55:02,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:55:02,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:55:02,323 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:55:02,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:55:02,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:55:02,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:55:02,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:55:02,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:55:02,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:55:02,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:55:02,325 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:55:02,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:55:02,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:55:02,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:55:02,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:55:02,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:55:02,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:55:02,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:02,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:55:02,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:55:02,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:55:02,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:55:02,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:55:02,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:55:02,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:55:02,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2021-08-27 10:55:02,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:55:02,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:55:02,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:55:02,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:55:02,699 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:55:02,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-08-27 10:55:02,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700a90cc/a98c0a7e3002482b85b71d0a37331e00/FLAGcca901740 [2021-08-27 10:55:03,197 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:55:03,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-08-27 10:55:03,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700a90cc/a98c0a7e3002482b85b71d0a37331e00/FLAGcca901740 [2021-08-27 10:55:03,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700a90cc/a98c0a7e3002482b85b71d0a37331e00 [2021-08-27 10:55:03,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:55:03,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:55:03,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:03,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:55:03,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:55:03,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f0ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03, skipping insertion in model container [2021-08-27 10:55:03,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:55:03,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:55:03,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:03,766 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:55:03,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:03,790 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:55:03,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03 WrapperNode [2021-08-27 10:55:03,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:03,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:03,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:55:03,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:55:03,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:03,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:55:03,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:55:03,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:55:03,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:55:03,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:55:03,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:55:03,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:55:03,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:03,908 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) [2021-08-27 10:55:03,936 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 [2021-08-27 10:55:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:55:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:55:04,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:55:04,131 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:55:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:04 BoogieIcfgContainer [2021-08-27 10:55:04,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:55:04,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:55:04,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:55:04,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:55:04,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:55:03" (1/3) ... [2021-08-27 10:55:04,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4703060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:04, skipping insertion in model container [2021-08-27 10:55:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (2/3) ... [2021-08-27 10:55:04,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4703060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:04, skipping insertion in model container [2021-08-27 10:55:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:04" (3/3) ... [2021-08-27 10:55:04,141 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2021-08-27 10:55:04,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:55:04,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 10:55:04,191 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:55:04,207 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, mConcurrency=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 [2021-08-27 10:55:04,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 10:55:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-08-27 10:55:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:55:04,230 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:55:04,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:55:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash 29684906, now seen corresponding path program 1 times [2021-08-27 10:55:04,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118584651] [2021-08-27 10:55:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118584651] [2021-08-27 10:55:04,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118584651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:04,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:04,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:55:04,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788936824] [2021-08-27 10:55:04,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:55:04,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:55:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:55:04,580 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-27 10:55:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,793 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-08-27 10:55:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:55:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-08-27 10:55:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,802 INFO L225 Difference]: With dead ends: 31 [2021-08-27 10:55:04,802 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:55:04,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:55:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-08-27 10:55:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-08-27 10:55:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-08-27 10:55:04,834 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 5 [2021-08-27 10:55:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,834 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-08-27 10:55:04,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-27 10:55:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-08-27 10:55:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 10:55:04,836 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 10:55:04,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:55:04,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:55:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,839 INFO L82 PathProgramCache]: Analyzing trace with hash 920232138, now seen corresponding path program 1 times [2021-08-27 10:55:04,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025190921] [2021-08-27 10:55:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025190921] [2021-08-27 10:55:04,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025190921] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:04,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:04,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:55:04,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846985270] [2021-08-27 10:55:04,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:04,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,901 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-27 10:55:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,922 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-08-27 10:55:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-08-27 10:55:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,924 INFO L225 Difference]: With dead ends: 17 [2021-08-27 10:55:04,924 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 10:55:04,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 10:55:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 10:55:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-08-27 10:55:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-08-27 10:55:04,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2021-08-27 10:55:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,933 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-08-27 10:55:04,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-27 10:55:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-08-27 10:55:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 10:55:04,934 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,935 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:04,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:55:04,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:55:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1121244256, now seen corresponding path program 1 times [2021-08-27 10:55:04,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292775776] [2021-08-27 10:55:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:05,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292775776] [2021-08-27 10:55:05,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292775776] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348299284] [2021-08-27 10:55:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:05,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:05,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:05,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:55:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:55:05,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348299284] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:05,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:55:05,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882227228] [2021-08-27 10:55:05,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:55:05,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:55:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:55:05,211 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-27 10:55:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:05,268 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-08-27 10:55:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:55:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-27 10:55:05,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:05,270 INFO L225 Difference]: With dead ends: 28 [2021-08-27 10:55:05,270 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 10:55:05,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:55:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 10:55:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-08-27 10:55:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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) [2021-08-27 10:55:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-08-27 10:55:05,275 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-08-27 10:55:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:05,275 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-08-27 10:55:05,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-27 10:55:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-08-27 10:55:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 10:55:05,276 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:05,276 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1] [2021-08-27 10:55:05,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-27 10:55:05,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 10:55:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:05,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1772875545, now seen corresponding path program 2 times [2021-08-27 10:55:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:05,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105207115] [2021-08-27 10:55:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:05,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:05,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105207115] [2021-08-27 10:55:05,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105207115] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692745148] [2021-08-27 10:55:05,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:05,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:05,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:05,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:55:05,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 10:55:05,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:05,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:55:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-27 10:55:05,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692745148] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:05,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2021-08-27 10:55:05,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846916431] [2021-08-27 10:55:05,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:55:05,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:55:05,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:05,773 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-08-27 10:55:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:06,016 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-08-27 10:55:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 10:55:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) Word has length 15 [2021-08-27 10:55:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:06,023 INFO L225 Difference]: With dead ends: 39 [2021-08-27 10:55:06,023 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:55:06,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 220.1ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:55:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:55:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:55:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-27 10:55:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:55:06,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-27 10:55:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:06,026 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:55:06,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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) [2021-08-27 10:55:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:55:06,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:55:06,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:06,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:55:06,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:06,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-27 10:55:06,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:55:06,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:55:06,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:55:06,347 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:55:06,348 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:55:06,348 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-08-27 10:55:06,348 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 25) no Hoare annotation was computed. [2021-08-27 10:55:06,348 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~M~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-08-27 10:55:06,349 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 25) no Hoare annotation was computed. [2021-08-27 10:55:06,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:55:06,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:55:06,349 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:55:06,349 INFO L853 garLoopResultBuilder]: At program point L26(lines 13 27) the Hoare annotation is: (or (<= ULTIMATE.start_main_~M~0 2147483647) (< ULTIMATE.start_main_~M~0 (+ ULTIMATE.start_main_~x~0 1))) [2021-08-27 10:55:06,349 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-27 10:55:06,350 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-08-27 10:55:06,353 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:55:06,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:55:06 BoogieIcfgContainer [2021-08-27 10:55:06,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:55:06,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:55:06,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:55:06,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:55:06,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:04" (3/4) ... [2021-08-27 10:55:06,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:55:06,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:55:06,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:55:06,400 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:55:06,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:55:06,401 INFO L168 Benchmark]: Toolchain (without parser) took 2787.52 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 35.3 MB in the beginning and 59.5 MB in the end (delta: -24.2 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,402 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:06,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.17 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 26.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.81 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 41.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,403 INFO L168 Benchmark]: Boogie Preprocessor took 20.63 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 40.0 MB in the end (delta: 995.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:55:06,403 INFO L168 Benchmark]: RCFGBuilder took 261.09 ms. Allocated memory is still 56.6 MB. Free memory was 40.0 MB in the beginning and 31.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,404 INFO L168 Benchmark]: TraceAbstraction took 2228.11 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 30.4 MB in the beginning and 62.1 MB in the end (delta: -31.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,404 INFO L168 Benchmark]: Witness Printer took 36.45 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 59.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:55:06,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.17 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 26.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.81 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 41.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.63 ms. Allocated memory is still 56.6 MB. Free memory was 41.0 MB in the beginning and 40.0 MB in the end (delta: 995.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 261.09 ms. Allocated memory is still 56.6 MB. Free memory was 40.0 MB in the beginning and 31.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2228.11 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 30.4 MB in the beginning and 62.1 MB in the end (delta: -31.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.45 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 59.5 MB in the end (delta: 2.6 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 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2163.9ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 12.0ms, AutomataDifference: 575.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 101.8ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 35 SDslu, 10 SDs, 0 SdLazy, 102 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 186.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 399.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 230 FormulaSimplificationTreeSizeReduction, 68.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 27.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.1ms SsaConstructionTime, 64.3ms SatisfiabilityAnalysisTime, 658.1ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 1 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 28/46 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: M <= 2147483647 && 0 <= x + 2147483648 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: M <= 2147483647 || M < x + 1 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:55:06,443 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...