./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d 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_1.3.100.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/RecursiveNonterminating-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 5c710c9332055b5f06164a07be44be6850b8917f .......................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:22:27,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:27,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:27,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:27,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:27,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:27,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:27,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:27,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:27,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:27,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:27,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:27,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:27,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:27,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:27,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:27,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:27,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:27,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:27,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:27,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:27,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:27,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:27,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:27,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:27,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:27,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:27,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:27,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:27,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:27,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:27,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:27,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:27,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:27,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:27,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:27,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:27,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:27,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:27,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:27,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:27,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:27,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:27,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:27,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:27,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:27,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:27,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:27,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:27,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:27,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:27,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:27,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:27,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:27,538 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:27,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:27,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:27,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:27,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:27,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:27,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:27,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:27,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:27,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:27,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:27,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:27,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:27,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:27,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:27,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:27,542 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 -> 5c710c9332055b5f06164a07be44be6850b8917f [2020-10-20 06:22:27,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:27,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:27,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:27,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:27,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:27,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2020-10-20 06:22:27,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b675d210/fd37ec98d23344cd8e573e261be5cc1a/FLAG13346f79b [2020-10-20 06:22:28,248 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:28,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2020-10-20 06:22:28,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b675d210/fd37ec98d23344cd8e573e261be5cc1a/FLAG13346f79b [2020-10-20 06:22:28,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b675d210/fd37ec98d23344cd8e573e261be5cc1a [2020-10-20 06:22:28,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:28,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:28,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:28,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:28,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:28,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b1375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28, skipping insertion in model container [2020-10-20 06:22:28,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:28,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:28,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:28,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:28,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:28,953 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:28,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28 WrapperNode [2020-10-20 06:22:28,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:28,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:28,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:28,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:28,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:28,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:28,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:28,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:28,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (1/1) ... [2020-10-20 06:22:28,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:28,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:29,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:29,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:29,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (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 [2020-10-20 06:22:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-20 06:22:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-20 06:22:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:29,262 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:29,262 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:22:29,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:29 BoogieIcfgContainer [2020-10-20 06:22:29,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:29,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:29,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:29,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:29,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:28" (1/3) ... [2020-10-20 06:22:29,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73acb23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:29, skipping insertion in model container [2020-10-20 06:22:29,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:28" (2/3) ... [2020-10-20 06:22:29,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73acb23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:29, skipping insertion in model container [2020-10-20 06:22:29,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:29" (3/3) ... [2020-10-20 06:22:29,273 INFO L111 eAbstractionObserver]: Analyzing ICFG RecursiveNonterminating-2.c [2020-10-20 06:22:29,286 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:29,293 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 06:22:29,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 06:22:29,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:29,333 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:29,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:29,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:29,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:29,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:29,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:29,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:29,356 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-20 06:22:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-10-20 06:22:29,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:29,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-10-20 06:22:29,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1666, now seen corresponding path program 1 times [2020-10-20 06:22:29,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:29,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513570041] [2020-10-20 06:22:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:29,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:29,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:29,504 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:22:29,504 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:22:29,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:29,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:29 BoogieIcfgContainer [2020-10-20 06:22:29,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:29,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:29,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:29,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:29,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:29" (3/4) ... [2020-10-20 06:22:29,533 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:22:29,569 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:29,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:29,572 INFO L168 Benchmark]: Toolchain (without parser) took 933.95 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 12.4 MB in the beginning and 24.5 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:22:29,573 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 34.1 MB. Free memory was 19.5 MB in the beginning and 19.5 MB in the end (delta: 28.2 kB). Peak memory consumption was 28.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.11 ms. Allocated memory was 34.6 MB in the beginning and 41.4 MB in the end (delta: 6.8 MB). Free memory was 11.6 MB in the beginning and 25.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.10 ms. Allocated memory is still 41.4 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,576 INFO L168 Benchmark]: Boogie Preprocessor took 15.76 ms. Allocated memory is still 41.4 MB. Free memory was 24.2 MB in the beginning and 23.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,577 INFO L168 Benchmark]: RCFGBuilder took 264.95 ms. Allocated memory is still 41.4 MB. Free memory was 23.2 MB in the beginning and 22.8 MB in the end (delta: 442.6 kB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,578 INFO L168 Benchmark]: TraceAbstraction took 264.79 ms. Allocated memory was 41.4 MB in the beginning and 44.0 MB in the end (delta: 2.6 MB). Free memory was 22.2 MB in the beginning and 26.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,579 INFO L168 Benchmark]: Witness Printer took 39.00 ms. Allocated memory is still 44.0 MB. Free memory was 26.3 MB in the beginning and 24.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:29,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 34.1 MB. Free memory was 19.5 MB in the beginning and 19.5 MB in the end (delta: 28.2 kB). Peak memory consumption was 28.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 311.11 ms. Allocated memory was 34.6 MB in the beginning and 41.4 MB in the end (delta: 6.8 MB). Free memory was 11.6 MB in the beginning and 25.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 28.10 ms. Allocated memory is still 41.4 MB. Free memory was 25.8 MB in the beginning and 24.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 15.76 ms. Allocated memory is still 41.4 MB. Free memory was 24.2 MB in the beginning and 23.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 264.95 ms. Allocated memory is still 41.4 MB. Free memory was 23.2 MB in the beginning and 22.8 MB in the end (delta: 442.6 kB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 264.79 ms. Allocated memory was 41.4 MB in the beginning and 44.0 MB in the end (delta: 2.6 MB). Free memory was 22.2 MB in the beginning and 26.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * Witness Printer took 39.00 ms. Allocated memory is still 44.0 MB. Free memory was 26.3 MB in the beginning and 24.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L17] int n = __VERIFIER_nondet_int(); [L18] n + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...