./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak --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 Kojak --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 0.1.25-f470102 [2019-12-01 20:42:32,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 20:42:32,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 20:42:32,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 20:42:32,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 20:42:32,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 20:42:32,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 20:42:32,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 20:42:32,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 20:42:32,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 20:42:32,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 20:42:32,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 20:42:32,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 20:42:32,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 20:42:32,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 20:42:32,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 20:42:32,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 20:42:32,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 20:42:32,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 20:42:32,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 20:42:32,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 20:42:32,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 20:42:32,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 20:42:32,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 20:42:32,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 20:42:32,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 20:42:32,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 20:42:32,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 20:42:32,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 20:42:32,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 20:42:32,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 20:42:32,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 20:42:32,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 20:42:32,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 20:42:32,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 20:42:32,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 20:42:32,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 20:42:32,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 20:42:32,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 20:42:32,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 20:42:32,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 20:42:32,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf [2019-12-01 20:42:32,424 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 20:42:32,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 20:42:32,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 20:42:32,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 20:42:32,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 20:42:32,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 20:42:32,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 20:42:32,425 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-01 20:42:32,426 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 20:42:32,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 20:42:32,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 20:42:32,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 20:42:32,427 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 20:42:32,427 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 20:42:32,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 20:42:32,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 20:42:32,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 20:42:32,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 20:42:32,428 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak 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 -> Kojak 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 [2019-12-01 20:42:32,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 20:42:32,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 20:42:32,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 20:42:32,538 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 20:42:32,538 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 20:42:32,539 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2019-12-01 20:42:32,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/data/19d259846/6ec469507dc74f2e97517181b9fc76d3/FLAG781b95e99 [2019-12-01 20:42:32,975 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 20:42:32,976 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2019-12-01 20:42:32,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/data/19d259846/6ec469507dc74f2e97517181b9fc76d3/FLAG781b95e99 [2019-12-01 20:42:32,990 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/data/19d259846/6ec469507dc74f2e97517181b9fc76d3 [2019-12-01 20:42:32,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 20:42:32,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 20:42:32,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 20:42:32,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 20:42:32,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 20:42:32,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:42:32" (1/1) ... [2019-12-01 20:42:32,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174ba895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:32, skipping insertion in model container [2019-12-01 20:42:32,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 08:42:32" (1/1) ... [2019-12-01 20:42:33,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 20:42:33,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 20:42:33,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 20:42:33,126 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 20:42:33,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 20:42:33,176 INFO L208 MainTranslator]: Completed translation [2019-12-01 20:42:33,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33 WrapperNode [2019-12-01 20:42:33,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 20:42:33,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 20:42:33,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 20:42:33,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 20:42:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 20:42:33,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 20:42:33,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 20:42:33,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 20:42:33,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 20:42:33,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 20:42:33,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 20:42:33,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 20:42:33,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 08:42:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2019-12-01 20:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2019-12-01 20:42:33,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2019-12-01 20:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2019-12-01 20:42:33,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2019-12-01 20:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 20:42:33,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 20:42:33,396 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 20:42:33,396 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-01 20:42:33,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:42:33 BoogieIcfgContainer [2019-12-01 20:42:33,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 20:42:33,397 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 20:42:33,397 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 20:42:33,404 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 20:42:33,404 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:42:33" (1/1) ... [2019-12-01 20:42:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 20:42:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:42:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 26 states and 30 transitions. [2019-12-01 20:42:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-12-01 20:42:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-01 20:42:33,439 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:42:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 20:42:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 20:42:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 20:42:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 30 states and 35 transitions. [2019-12-01 20:42:33,598 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-01 20:42:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-01 20:42:33,598 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 20:42:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:42:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:42:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:42:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 20:42:33,632 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2019-12-01 20:42:33,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 08:42:33 ImpRootNode [2019-12-01 20:42:33,647 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 20:42:33,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 20:42:33,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 20:42:33,648 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 20:42:33,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 08:42:33" (3/4) ... [2019-12-01 20:42:33,650 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 20:42:33,674 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4f68d76-9696-4501-a5af-87b7f5e46f1d/bin/ukojak/witness.graphml [2019-12-01 20:42:33,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 20:42:33,676 INFO L168 Benchmark]: Toolchain (without parser) took 682.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -124.1 MB). Peak memory consumption was 709.3 kB. Max. memory is 11.5 GB. [2019-12-01 20:42:33,676 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 20:42:33,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-01 20:42:33,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.21 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. [2019-12-01 20:42:33,677 INFO L168 Benchmark]: Boogie Preprocessor took 11.26 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. [2019-12-01 20:42:33,678 INFO L168 Benchmark]: RCFGBuilder took 188.78 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-12-01 20:42:33,678 INFO L168 Benchmark]: CodeCheck took 250.11 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-12-01 20:42:33,678 INFO L168 Benchmark]: Witness Printer took 27.10 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. [2019-12-01 20:42:33,681 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - 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] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.21 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. * Boogie Preprocessor took 11.26 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. * RCFGBuilder took 188.78 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * CodeCheck took 250.11 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 27.10 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. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...