./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/Nyala-2lex-2.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 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:29:30,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:29:30,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:29:30,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:29:30,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:29:30,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:29:30,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:29:30,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:29:30,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:29:30,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:29:30,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:29:30,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:29:30,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:29:30,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:29:30,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:29:30,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:29:30,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:29:30,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:29:30,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:29:30,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:29:30,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:29:30,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:29:30,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:29:30,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:29:30,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:29:30,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:29:30,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:29:30,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:29:30,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:29:30,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:29:30,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:29:30,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:29:30,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:29:30,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:29:30,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:29:30,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:29:30,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:29:30,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:29:30,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:29:30,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:29:30,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:29:30,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:29:30,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:29:30,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:29:30,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:29:30,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:29:30,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:29:30,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:29:30,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:29:30,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:29:30,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:29:30,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:29:30,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:29:30,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:29:30,433 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:29:30,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:29:30,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:29:30,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:29:30,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:29:30,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:29:30,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:29:30,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:29:30,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:29:30,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:29:30,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:29:30,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:29:30,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:29:30,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:29:30,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:29:30,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:29:30,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2020-10-19 18:29:30,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:29:30,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:29:30,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:29:30,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:29:30,817 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:29:30,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2020-10-19 18:29:30,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9519ae2/e6a0b22fc5a24aedb6d78472c8154c21/FLAG6265f1f37 [2020-10-19 18:29:31,338 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:29:31,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2020-10-19 18:29:31,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9519ae2/e6a0b22fc5a24aedb6d78472c8154c21/FLAG6265f1f37 [2020-10-19 18:29:31,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9519ae2/e6a0b22fc5a24aedb6d78472c8154c21 [2020-10-19 18:29:31,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:29:31,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:29:31,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:31,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:29:31,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:29:31,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:31,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e126fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31, skipping insertion in model container [2020-10-19 18:29:31,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:31,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:29:31,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:29:31,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:31,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:29:31,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:31,974 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:29:31,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31 WrapperNode [2020-10-19 18:29:31,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:31,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:31,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:29:31,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:29:31,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:31,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:32,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:29:32,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:29:32,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:29:32,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... [2020-10-19 18:29:32,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:29:32,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:29:32,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:29:32,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:29:32,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:29:32,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:29:32,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:29:32,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:29:32,327 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:29:32,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:32 BoogieIcfgContainer [2020-10-19 18:29:32,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:29:32,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:29:32,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:29:32,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:29:32,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:29:31" (1/3) ... [2020-10-19 18:29:32,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de3237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:32, skipping insertion in model container [2020-10-19 18:29:32,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:31" (2/3) ... [2020-10-19 18:29:32,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de3237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:32, skipping insertion in model container [2020-10-19 18:29:32,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:32" (3/3) ... [2020-10-19 18:29:32,341 INFO L111 eAbstractionObserver]: Analyzing ICFG Nyala-2lex-2.c [2020-10-19 18:29:32,354 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:29:32,363 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:29:32,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:29:32,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:29:32,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:29:32,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:29:32,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:29:32,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:29:32,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:29:32,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:29:32,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:29:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-19 18:29:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-19 18:29:32,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:32,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-19 18:29:32,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:32,426 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-19 18:29:32,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:32,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065788871] [2020-10-19 18:29:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065788871] [2020-10-19 18:29:32,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:32,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:32,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524669730] [2020-10-19 18:29:32,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:32,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:32,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:32,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:32,635 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-10-19 18:29:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:32,835 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-19 18:29:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:32,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-19 18:29:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:32,853 INFO L225 Difference]: With dead ends: 19 [2020-10-19 18:29:32,854 INFO L226 Difference]: Without dead ends: 10 [2020-10-19 18:29:32,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-19 18:29:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-19 18:29:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 18:29:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-19 18:29:32,905 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 3 [2020-10-19 18:29:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:32,906 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-19 18:29:32,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-19 18:29:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:29:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:32,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:29:32,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:29:32,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-19 18:29:32,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:32,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733314101] [2020-10-19 18:29:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733314101] [2020-10-19 18:29:32,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:32,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:29:32,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42751699] [2020-10-19 18:29:32,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:32,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:32,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:32,963 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-10-19 18:29:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:32,996 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-10-19 18:29:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:32,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:29:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:32,998 INFO L225 Difference]: With dead ends: 11 [2020-10-19 18:29:32,998 INFO L226 Difference]: Without dead ends: 10 [2020-10-19 18:29:32,999 INFO L677 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 [2020-10-19 18:29:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-19 18:29:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-19 18:29:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-19 18:29:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-10-19 18:29:33,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2020-10-19 18:29:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:33,001 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-10-19 18:29:33,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-10-19 18:29:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:29:33,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:33,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:29:33,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:29:33,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash 925739533, now seen corresponding path program 1 times [2020-10-19 18:29:33,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:33,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192161793] [2020-10-19 18:29:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192161793] [2020-10-19 18:29:33,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:33,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:33,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905003168] [2020-10-19 18:29:33,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:33,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:33,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:33,031 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-10-19 18:29:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:33,043 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-10-19 18:29:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:33,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 18:29:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:33,045 INFO L225 Difference]: With dead ends: 9 [2020-10-19 18:29:33,045 INFO L226 Difference]: Without dead ends: 8 [2020-10-19 18:29:33,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-19 18:29:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-19 18:29:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-19 18:29:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-10-19 18:29:33,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2020-10-19 18:29:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:33,050 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-19 18:29:33,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-10-19 18:29:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:29:33,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:33,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:29:33,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:29:33,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1366845498, now seen corresponding path program 1 times [2020-10-19 18:29:33,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:33,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275956579] [2020-10-19 18:29:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275956579] [2020-10-19 18:29:33,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:33,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:29:33,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971819815] [2020-10-19 18:29:33,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:33,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:33,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:33,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:33,083 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2020-10-19 18:29:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:33,098 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-10-19 18:29:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:33,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:29:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:33,099 INFO L225 Difference]: With dead ends: 9 [2020-10-19 18:29:33,099 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:29:33,100 INFO L677 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 [2020-10-19 18:29:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:29:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:29:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:29:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:29:33,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-10-19 18:29:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:33,102 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:29:33,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:29:33,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:29:33,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:29:33,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:29:33,135 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:29:33,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:29:33,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:29:33,136 INFO L274 CegarLoopResult]: For program point L21(lines 21 24) no Hoare annotation was computed. [2020-10-19 18:29:33,136 INFO L270 CegarLoopResult]: At program point L21-2(lines 19 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-10-19 18:29:33,136 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2020-10-19 18:29:33,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:29:33,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-19 18:29:33,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:29:33,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:29:33,137 INFO L270 CegarLoopResult]: At program point L26(lines 15 27) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2020-10-19 18:29:33,137 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-19 18:29:33,138 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-19 18:29:33,138 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-19 18:29:33,138 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-19 18:29:33,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:29:33 BoogieIcfgContainer [2020-10-19 18:29:33,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:29:33,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:29:33,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:29:33,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:29:33,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:32" (3/4) ... [2020-10-19 18:29:33,161 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:29:33,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:29:33,173 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-19 18:29:33,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:29:33,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:29:33,219 INFO L168 Benchmark]: Toolchain (without parser) took 1483.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 961.3 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,220 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:33,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 949.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,222 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,223 INFO L168 Benchmark]: RCFGBuilder took 226.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,223 INFO L168 Benchmark]: TraceAbstraction took 822.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,224 INFO L168 Benchmark]: Witness Printer took 61.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:33,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 232.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 949.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 822.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 61.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...