./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3d619d2c1c3b5319c1ba41a41e084c9947cb440 .................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-09 23:28:49,412 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 23:28:49,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 23:28:49,419 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 23:28:49,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 23:28:49,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 23:28:49,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 23:28:49,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 23:28:49,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 23:28:49,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 23:28:49,424 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 23:28:49,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 23:28:49,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 23:28:49,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 23:28:49,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 23:28:49,427 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 23:28:49,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 23:28:49,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 23:28:49,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 23:28:49,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 23:28:49,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 23:28:49,432 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 23:28:49,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 23:28:49,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 23:28:49,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 23:28:49,434 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 23:28:49,435 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 23:28:49,436 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 23:28:49,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 23:28:49,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 23:28:49,437 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 23:28:49,438 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 23:28:49,438 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 23:28:49,438 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 23:28:49,439 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 23:28:49,439 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 23:28:49,439 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-09 23:28:49,447 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 23:28:49,447 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 23:28:49,448 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 23:28:49,448 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 23:28:49,449 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 23:28:49,449 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 23:28:49,449 INFO L133 SettingsManager]: * Use SBE=true [2018-11-09 23:28:49,449 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 23:28:49,449 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 23:28:49,449 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 23:28:49,449 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 23:28:49,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 23:28:49,451 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 23:28:49,451 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-09 23:28:49,451 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 23:28:49,451 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-09 23:28:49,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-09 23:28:49,451 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 23:28:49,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 23:28:49,452 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 23:28:49,452 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-09 23:28:49,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 23:28:49,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-09 23:28:49,452 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3d619d2c1c3b5319c1ba41a41e084c9947cb440 [2018-11-09 23:28:49,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 23:28:49,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 23:28:49,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 23:28:49,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 23:28:49,489 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 23:28:49,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:28:49,534 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/data/807632438/fa4b11ddfd194ff3b239cdf7863e1138/FLAG94b8bb0c5 [2018-11-09 23:28:49,869 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 23:28:49,869 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/sv-benchmarks/c/recursive/EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:28:49,875 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/data/807632438/fa4b11ddfd194ff3b239cdf7863e1138/FLAG94b8bb0c5 [2018-11-09 23:28:49,896 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/data/807632438/fa4b11ddfd194ff3b239cdf7863e1138 [2018-11-09 23:28:49,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 23:28:49,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-09 23:28:49,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 23:28:49,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 23:28:49,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 23:28:49,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:28:49" (1/1) ... [2018-11-09 23:28:49,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b52ffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:49, skipping insertion in model container [2018-11-09 23:28:49,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:28:49" (1/1) ... [2018-11-09 23:28:49,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 23:28:49,928 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 23:28:50,044 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:28:50,047 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 23:28:50,058 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:28:50,067 INFO L193 MainTranslator]: Completed translation [2018-11-09 23:28:50,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50 WrapperNode [2018-11-09 23:28:50,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 23:28:50,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 23:28:50,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 23:28:50,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 23:28:50,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... [2018-11-09 23:28:50,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 23:28:50,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 23:28:50,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 23:28:50,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 23:28:50,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/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 [2018-11-09 23:28:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-09 23:28:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 23:28:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2018-11-09 23:28:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2018-11-09 23:28:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-09 23:28:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-09 23:28:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-09 23:28:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2018-11-09 23:28:50,156 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2018-11-09 23:28:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-09 23:28:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-09 23:28:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 23:28:50,268 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 23:28:50,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:28:50 BoogieIcfgContainer [2018-11-09 23:28:50,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 23:28:50,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-09 23:28:50,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-09 23:28:50,271 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-09 23:28:50,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:28:49" (1/3) ... [2018-11-09 23:28:50,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fd1740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:28:50, skipping insertion in model container [2018-11-09 23:28:50,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:28:50" (2/3) ... [2018-11-09 23:28:50,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fd1740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:28:50, skipping insertion in model container [2018-11-09 23:28:50,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:28:50" (3/3) ... [2018-11-09 23:28:50,273 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03_false-unreach-call_true-no-overflow_true-termination.c [2018-11-09 23:28:50,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-09 23:28:50,287 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-09 23:28:50,297 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-09 23:28:50,313 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-09 23:28:50,314 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-09 23:28:50,314 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-09 23:28:50,314 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-09 23:28:50,314 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-09 23:28:50,314 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-09 23:28:50,314 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-09 23:28:50,314 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-09 23:28:50,314 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-09 23:28:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-09 23:28:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-09 23:28:50,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-09 23:28:50,334 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-09 23:28:50,336 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-09 23:28:50,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:28:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -241846627, now seen corresponding path program 1 times [2018-11-09 23:28:50,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-09 23:28:50,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-09 23:28:50,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:28:50,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-09 23:28:50,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-09 23:28:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:28:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:28:50,433 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-09 23:28:50,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 11:28:50 BoogieIcfgContainer [2018-11-09 23:28:50,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-09 23:28:50,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 23:28:50,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 23:28:50,451 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 23:28:50,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:28:50" (3/4) ... [2018-11-09 23:28:50,453 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-09 23:28:50,481 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_40528eeb-5a6b-47c0-b45f-e20774caf360/bin-2019/uautomizer/witness.graphml [2018-11-09 23:28:50,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 23:28:50,481 INFO L168 Benchmark]: Toolchain (without parser) took 582.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:28:50,482 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:28:50,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-09 23:28:50,483 INFO L168 Benchmark]: Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:28:50,483 INFO L168 Benchmark]: RCFGBuilder took 183.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-09 23:28:50,484 INFO L168 Benchmark]: TraceAbstraction took 180.89 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:28:50,484 INFO L168 Benchmark]: Witness Printer took 30.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:28:50,486 INFO L336 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 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.18 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 180.89 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 30.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 47]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int n = __VERIFIER_nondet_int(); [L39] COND FALSE !(n < 0) VAL [n=0] [L42] CALL, EXPR isEven(n) VAL [\old(n)=0] [L27] COND TRUE n == 0 [L28] RET return 1; VAL [\old(n)=0, \result=1, n=0] [L42] EXPR isEven(n) VAL [isEven(n)=1, n=0] [L42] int result = isEven(n); [L43] int mod = n % 2; VAL [mod=0, n=0, result=1] [L44] COND FALSE !(result < 0 || result == mod) VAL [mod=0, n=0, result=1] [L47] __VERIFIER_error() VAL [mod=0, n=0, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...