./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.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_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3bf945356a28265a842df89cdbf40bfa9a223140 ................................................................................................................................................................................................................................................ 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 [2018-10-26 20:16:31,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:16:31,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:16:31,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:16:31,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:16:31,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:16:31,157 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:16:31,159 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:16:31,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:16:31,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:16:31,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:16:31,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:16:31,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:16:31,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:16:31,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:16:31,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:16:31,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:16:31,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:16:31,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:16:31,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:16:31,174 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:16:31,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:16:31,177 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:16:31,177 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:16:31,178 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:16:31,178 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:16:31,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:16:31,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:16:31,182 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:16:31,183 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:16:31,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:16:31,184 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:16:31,184 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:16:31,184 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:16:31,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:16:31,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:16:31,187 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-26 20:16:31,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:16:31,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:16:31,200 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:16:31,201 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:16:31,202 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:16:31,202 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:16:31,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:16:31,202 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:16:31,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:16:31,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:16:31,204 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:16:31,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:16:31,204 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 20:16:31,204 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 20:16:31,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:16:31,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:16:31,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 20:16:31,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:16:31,207 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:16:31,207 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:16:31,207 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 20:16:31,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:16:31,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:16:31,208 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_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/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 ! call(__VERIFIER_error())) ) 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 -> 3bf945356a28265a842df89cdbf40bfa9a223140 [2018-10-26 20:16:31,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:16:31,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:16:31,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:16:31,252 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:16:31,252 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:16:31,253 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-10-26 20:16:31,310 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/data/47edf56ed/bd7a4b1db5d947e7a45db9b8dd5112b5/FLAG8d53d0315 [2018-10-26 20:16:31,681 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:16:31,682 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-10-26 20:16:31,687 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/data/47edf56ed/bd7a4b1db5d947e7a45db9b8dd5112b5/FLAG8d53d0315 [2018-10-26 20:16:31,701 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/data/47edf56ed/bd7a4b1db5d947e7a45db9b8dd5112b5 [2018-10-26 20:16:31,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:16:31,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:16:31,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:16:31,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:16:31,711 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:16:31,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43804fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31, skipping insertion in model container [2018-10-26 20:16:31,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:16:31,739 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:16:31,895 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:16:31,899 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:16:31,916 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:16:31,931 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:16:31,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31 WrapperNode [2018-10-26 20:16:31,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:16:31,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:16:31,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:16:31,932 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:16:31,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:16:31,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:16:31,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:16:31,963 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:16:31,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... [2018-10-26 20:16:31,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:16:31,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:16:31,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:16:31,979 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:16:31,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:16:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/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 [2018-10-26 20:16:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:16:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:16:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-10-26 20:16:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-10-26 20:16:32,448 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:16:32,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:16:32 BoogieIcfgContainer [2018-10-26 20:16:32,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:16:32,449 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-26 20:16:32,449 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-26 20:16:32,462 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-26 20:16:32,463 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:16:32" (1/1) ... [2018-10-26 20:16:32,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:16:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:16:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-10-26 20:16:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-26 20:16:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:16:32,527 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:16:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:16:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:16:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:16:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2018-10-26 20:16:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-10-26 20:16:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:16:33,086 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:16:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:16:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 20:16:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:16:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2018-10-26 20:16:34,349 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-10-26 20:16:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 20:16:34,350 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:16:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:16:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:16:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:16:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:16:34,498 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2018-10-26 20:16:34,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.10 08:16:34 ImpRootNode [2018-10-26 20:16:34,557 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-26 20:16:34,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:16:34,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:16:34,562 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:16:34,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:16:32" (3/4) ... [2018-10-26 20:16:34,565 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 20:16:34,633 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9ae17afb-668f-4d2a-96cf-036972cba66a/bin-2019/ukojak/witness.graphml [2018-10-26 20:16:34,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:16:34,634 INFO L168 Benchmark]: Toolchain (without parser) took 2929.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -112.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:16:34,636 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:16:34,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.87 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 948.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-10-26 20:16:34,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.17 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:16:34,642 INFO L168 Benchmark]: Boogie Preprocessor took 15.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:16:34,647 INFO L168 Benchmark]: RCFGBuilder took 469.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-10-26 20:16:34,648 INFO L168 Benchmark]: CodeCheck took 2107.94 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: 75.7 MB). Peak memory consumption was 75.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:16:34,649 INFO L168 Benchmark]: Witness Printer took 75.75 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. [2018-10-26 20:16:34,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 17 locations, 1 error locations. UNSAFE Result, 2.0s OverallTime, 3 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 12 SDslu, 20 SDs, 0 SdLazy, 78 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL, EXPR id(input) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] RET return 0; VAL [\old(x)=0, \result=0, x=0] [L6] EXPR id((unsigned int)x-1) VAL [\old(x)=1, id((unsigned int)x-1)=0, x=1] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] RET return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L6] EXPR id((unsigned int)x-1) VAL [\old(x)=2, id((unsigned int)x-1)=1, x=2] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] RET return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L13] EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 2 [L15] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 224.87 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 948.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.17 ms. Allocated memory is still 1.0 GB. Free memory is still 948.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 469.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -202.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * CodeCheck took 2107.94 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: 75.7 MB). Peak memory consumption was 75.7 MB. Max. memory is 11.5 GB. * Witness Printer took 75.75 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...