./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer --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 32bit --witnessprinter.graph.data.programhash 1c7eaf6fd654eb823cca8af53b20b25aebb12776 ....................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 07:13:44,366 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:13:44,367 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:13:44,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:13:44,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:13:44,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:13:44,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:13:44,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:13:44,379 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:13:44,380 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:13:44,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:13:44,381 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:13:44,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:13:44,382 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:13:44,383 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:13:44,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:13:44,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:13:44,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:13:44,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:13:44,387 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:13:44,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:13:44,389 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:13:44,391 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:13:44,391 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:13:44,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:13:44,392 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:13:44,393 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:13:44,393 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:13:44,394 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:13:44,394 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:13:44,395 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:13:44,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:13:44,395 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:13:44,396 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:13:44,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:13:44,397 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:13:44,397 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-10 07:13:44,405 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:13:44,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:13:44,406 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:13:44,406 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:13:44,406 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:13:44,406 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:13:44,407 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:13:44,407 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:13:44,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:13:44,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:13:44,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:13:44,409 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:13:44,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:13:44,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:13:44,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:13:44,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:13:44,410 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:13:44,412 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:13:44,412 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:13:44,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:13:44,413 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_93ed364a-1fe5-47af-8b62-8e96a958f044/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 ! 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c7eaf6fd654eb823cca8af53b20b25aebb12776 [2018-11-10 07:13:44,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:13:44,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:13:44,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:13:44,453 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:13:44,453 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:13:44,454 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c [2018-11-10 07:13:44,506 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/data/0f9f1198f/0c80b4739d624023ae398b4d340d9cb9/FLAG0ffe4c534 [2018-11-10 07:13:44,842 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:13:44,843 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug_false-no-overflow.c [2018-11-10 07:13:44,847 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/data/0f9f1198f/0c80b4739d624023ae398b4d340d9cb9/FLAG0ffe4c534 [2018-11-10 07:13:44,858 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/data/0f9f1198f/0c80b4739d624023ae398b4d340d9cb9 [2018-11-10 07:13:44,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:13:44,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 07:13:44,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:13:44,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:13:44,866 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:13:44,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:13:44" (1/1) ... [2018-11-10 07:13:44,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1788b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:44, skipping insertion in model container [2018-11-10 07:13:44,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:13:44" (1/1) ... [2018-11-10 07:13:44,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:13:44,894 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:13:45,030 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:13:45,033 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:13:45,043 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:13:45,052 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:13:45,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45 WrapperNode [2018-11-10 07:13:45,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:13:45,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:13:45,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:13:45,053 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:13:45,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... [2018-11-10 07:13:45,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:13:45,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:13:45,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:13:45,072 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:13:45,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/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 [2018-11-10 07:13:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:13:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:13:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2018-11-10 07:13:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2018-11-10 07:13:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:13:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 07:13:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 07:13:45,161 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2018-11-10 07:13:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2018-11-10 07:13:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:13:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:13:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:13:45,334 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:13:45,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:13:45 BoogieIcfgContainer [2018-11-10 07:13:45,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:13:45,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:13:45,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:13:45,338 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:13:45,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:13:44" (1/3) ... [2018-11-10 07:13:45,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:13:45, skipping insertion in model container [2018-11-10 07:13:45,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:13:45" (2/3) ... [2018-11-10 07:13:45,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:13:45, skipping insertion in model container [2018-11-10 07:13:45,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:13:45" (3/3) ... [2018-11-10 07:13:45,340 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd03WithOverflowBug_false-no-overflow.c [2018-11-10 07:13:45,347 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:13:45,353 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 07:13:45,367 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 07:13:45,388 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:13:45,390 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:13:45,390 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:13:45,390 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:13:45,390 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:13:45,390 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:13:45,390 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:13:45,391 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:13:45,391 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:13:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-10 07:13:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:13:45,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:13:45,411 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:13:45,414 INFO L424 AbstractCegarLoop]: === Iteration 1 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:13:45,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:13:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash -62605241, now seen corresponding path program 1 times [2018-11-10 07:13:45,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:13:45,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:13:45,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:13:45,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:13:45,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:13:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:13:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:13:45,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:13:45,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 07:13:45,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 07:13:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:13:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:13:45,566 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2018-11-10 07:13:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:13:45,641 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-11-10 07:13:45,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 07:13:45,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-10 07:13:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:13:45,648 INFO L225 Difference]: With dead ends: 52 [2018-11-10 07:13:45,649 INFO L226 Difference]: Without dead ends: 29 [2018-11-10 07:13:45,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 07:13:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-10 07:13:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-11-10 07:13:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 07:13:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-10 07:13:45,674 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2018-11-10 07:13:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:13:45,674 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-10 07:13:45,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 07:13:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-10 07:13:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 07:13:45,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:13:45,675 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:13:45,676 INFO L424 AbstractCegarLoop]: === Iteration 2 === [isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 07:13:45,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:13:45,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1940762428, now seen corresponding path program 1 times [2018-11-10 07:13:45,676 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:13:45,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:13:45,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:13:45,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:13:45,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:13:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:13:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:13:45,699 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 07:13:45,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:13:45 BoogieIcfgContainer [2018-11-10 07:13:45,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:13:45,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:13:45,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:13:45,715 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:13:45,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:13:45" (3/4) ... [2018-11-10 07:13:45,718 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 07:13:45,744 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_93ed364a-1fe5-47af-8b62-8e96a958f044/bin-2019/uautomizer/witness.graphml [2018-11-10 07:13:45,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:13:45,745 INFO L168 Benchmark]: Toolchain (without parser) took 884.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -128.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2018-11-10 07:13:45,746 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:13:45,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.20 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:13:45,747 INFO L168 Benchmark]: Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:13:45,747 INFO L168 Benchmark]: RCFGBuilder took 263.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:13:45,748 INFO L168 Benchmark]: TraceAbstraction took 379.71 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-11-10 07:13:45,748 INFO L168 Benchmark]: Witness Printer took 29.55 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:13:45,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 191.20 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 263.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 379.71 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: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Witness Printer took 29.55 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 32]: integer overflow possible integer overflow possible We found a FailurePath: [L38] int n = __VERIFIER_nondet_int(); [L39] CALL isEven(n) VAL [\old(n)=-2147483648] [L27] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648] [L29] COND FALSE !(n == 1) VAL [\old(n)=-2147483648, n=-2147483648] [L32] n - 1 VAL [\old(n)=-2147483648, n=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 22 SDslu, 88 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...