./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8f83f4c04fbac90273b8f8e733ac05d1463068f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-aa41828 [2018-11-22 23:23:52,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:23:52,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:23:52,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:23:52,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:23:52,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:23:52,532 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:23:52,534 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:23:52,535 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:23:52,535 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:23:52,536 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:23:52,536 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:23:52,537 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:23:52,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:23:52,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:23:52,539 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:23:52,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:23:52,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:23:52,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:23:52,543 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:23:52,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:23:52,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:23:52,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:23:52,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:23:52,546 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:23:52,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:23:52,547 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:23:52,547 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:23:52,548 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:23:52,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:23:52,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:23:52,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:23:52,549 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:23:52,550 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:23:52,550 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:23:52,551 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:23:52,551 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 23:23:52,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:23:52,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:23:52,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:23:52,559 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:23:52,560 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:23:52,560 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:23:52,560 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:23:52,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:23:52,560 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:23:52,560 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:23:52,560 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:23:52,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:23:52,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:23:52,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:23:52,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:23:52,562 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_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8f83f4c04fbac90273b8f8e733ac05d1463068f [2018-11-22 23:23:52,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:23:52,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:23:52,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:23:52,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:23:52,595 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:23:52,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c [2018-11-22 23:23:52,630 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/data/61029b019/84e4bc7103a84e798ba991840e874f82/FLAGa43557033 [2018-11-22 23:23:53,044 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:23:53,045 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c [2018-11-22 23:23:53,049 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/data/61029b019/84e4bc7103a84e798ba991840e874f82/FLAGa43557033 [2018-11-22 23:23:53,060 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/data/61029b019/84e4bc7103a84e798ba991840e874f82 [2018-11-22 23:23:53,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:23:53,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:23:53,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:23:53,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:23:53,066 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:23:53,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eac3ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53, skipping insertion in model container [2018-11-22 23:23:53,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:23:53,086 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:23:53,184 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:23:53,187 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:23:53,194 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:23:53,203 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:23:53,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53 WrapperNode [2018-11-22 23:23:53,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:23:53,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:23:53,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:23:53,205 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:23:53,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:23:53,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:23:53,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:23:53,218 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:23:53,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... [2018-11-22 23:23:53,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:23:53,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:23:53,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:23:53,229 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:23:53,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/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 [2018-11-22 23:23:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:23:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:23:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-22 23:23:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-22 23:23:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:23:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:23:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:23:53,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:23:53,377 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:23:53,377 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-22 23:23:53,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:23:53 BoogieIcfgContainer [2018-11-22 23:23:53,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:23:53,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:23:53,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:23:53,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:23:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:23:53" (1/3) ... [2018-11-22 23:23:53,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cee504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:23:53, skipping insertion in model container [2018-11-22 23:23:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:23:53" (2/3) ... [2018-11-22 23:23:53,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cee504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:23:53, skipping insertion in model container [2018-11-22 23:23:53,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:23:53" (3/3) ... [2018-11-22 23:23:53,383 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_false-unreach-call_true-termination.c [2018-11-22 23:23:53,389 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:23:53,393 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 23:23:53,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 23:23:53,421 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:23:53,421 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:23:53,422 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:23:53,422 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:23:53,422 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:23:53,422 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:23:53,422 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:23:53,422 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:23:53,422 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:23:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-22 23:23:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 23:23:53,437 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:23:53,438 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:23:53,439 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:23:53,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:23:53,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2018-11-22 23:23:53,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:23:53,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:23:53,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:23:53,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:23:53,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:23:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 23:23:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 23:23:53,514 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #19#return; [?] CALL call #t~ret1 := main(); [?] CALL call f(4); VAL [|f_#in~n|=4] [?] ~n := #in~n; VAL [f_~n=4, |f_#in~n|=4] [?] assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; VAL [f_~n=3, |f_#in~n|=4] [?] CALL call f(~n); VAL [|f_#in~n|=3] [?] ~n := #in~n; VAL [f_~n=3, |f_#in~n|=3] [?] assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; VAL [f_~n=2, |f_#in~n|=3] [?] CALL call f(~n); VAL [|f_#in~n|=2] [?] ~n := #in~n; VAL [f_~n=2, |f_#in~n|=2] [?] assume ~n < 3; VAL [f_~n=2, |f_#in~n|=2] [?] assume true; VAL [f_~n=2, |f_#in~n|=2] [?] RET #17#return; VAL [f_~n=2, |f_#in~n|=3] [?] assume !false; VAL [f_~n=2, |f_#in~n|=3] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] assume ~n < 3; VAL [#in~n=2, ~n=2] [L3-L8] ensures true; VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] assume ~n < 3; VAL [#in~n=2, ~n=2] [L3-L8] ensures true; VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [L11] CALL f(4) VAL [\old(n)=4] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=4, n=3] [L6] CALL f(n) VAL [\old(n)=3] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=3, n=2] [L6] CALL f(n) VAL [\old(n)=2] [L4] COND TRUE n<3 VAL [\old(n)=2, n=2] [L6] RET f(n) VAL [\old(n)=3, n=2] [L7] __VERIFIER_error() VAL [\old(n)=3, n=2] ----- [2018-11-22 23:23:53,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:23:53 BoogieIcfgContainer [2018-11-22 23:23:53,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:23:53,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:23:53,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:23:53,535 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:23:53,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:23:53" (3/4) ... [2018-11-22 23:23:53,537 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #19#return; [?] CALL call #t~ret1 := main(); [?] CALL call f(4); VAL [|f_#in~n|=4] [?] ~n := #in~n; VAL [f_~n=4, |f_#in~n|=4] [?] assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; VAL [f_~n=3, |f_#in~n|=4] [?] CALL call f(~n); VAL [|f_#in~n|=3] [?] ~n := #in~n; VAL [f_~n=3, |f_#in~n|=3] [?] assume !(~n < 3);#t~post0 := ~n;~n := #t~post0 - 1;havoc #t~post0; VAL [f_~n=2, |f_#in~n|=3] [?] CALL call f(~n); VAL [|f_#in~n|=2] [?] ~n := #in~n; VAL [f_~n=2, |f_#in~n|=2] [?] assume ~n < 3; VAL [f_~n=2, |f_#in~n|=2] [?] assume true; VAL [f_~n=2, |f_#in~n|=2] [?] RET #17#return; VAL [f_~n=2, |f_#in~n|=3] [?] assume !false; VAL [f_~n=2, |f_#in~n|=3] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] assume ~n < 3; VAL [#in~n=2, ~n=2] [L3-L8] ensures true; VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] assume !(~n < 3); [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] assume ~n < 3; VAL [#in~n=2, ~n=2] [L3-L8] ensures true; VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L11] CALL call f(4); VAL [#in~n=4] [L3-L8] ~n := #in~n; VAL [#in~n=4, ~n=4] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=4, ~n=3] [L6] CALL call f(~n); VAL [#in~n=3] [L3-L8] ~n := #in~n; VAL [#in~n=3, ~n=3] [L4] COND FALSE !(~n < 3) [L5] #t~post0 := ~n; [L5] ~n := #t~post0 - 1; [L5] havoc #t~post0; VAL [#in~n=3, ~n=2] [L6] CALL call f(~n); VAL [#in~n=2] [L3-L8] ~n := #in~n; VAL [#in~n=2, ~n=2] [L4] COND TRUE ~n < 3 VAL [#in~n=2, ~n=2] [L6] RET call f(~n); VAL [#in~n=3, ~n=2] [L7] assert false; VAL [#in~n=3, ~n=2] [L11] CALL f(4) VAL [\old(n)=4] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=4, n=3] [L6] CALL f(n) VAL [\old(n)=3] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=3, n=2] [L6] CALL f(n) VAL [\old(n)=2] [L4] COND TRUE n<3 VAL [\old(n)=2, n=2] [L6] RET f(n) VAL [\old(n)=3, n=2] [L7] __VERIFIER_error() VAL [\old(n)=3, n=2] ----- [2018-11-22 23:23:53,568 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d6c2e461-1f34-4241-832a-7f6d6d76f6f9/bin-2019/uautomizer/witness.graphml [2018-11-22 23:23:53,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:23:53,569 INFO L168 Benchmark]: Toolchain (without parser) took 506.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:23:53,570 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-11-22 23:23:53,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 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. [2018-11-22 23:23:53,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.15 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. [2018-11-22 23:23:53,571 INFO L168 Benchmark]: Boogie Preprocessor took 10.47 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:23:53,572 INFO L168 Benchmark]: RCFGBuilder took 149.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:23:53,572 INFO L168 Benchmark]: TraceAbstraction took 156.28 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:23:53,573 INFO L168 Benchmark]: Witness Printer took 33.56 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:23:53,575 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 140.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 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 Procedure Inliner took 13.15 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. * Boogie Preprocessor took 10.47 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 149.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 156.28 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * Witness Printer took 33.56 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] CALL f(4) VAL [\old(n)=4] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=4, n=3] [L6] CALL f(n) VAL [\old(n)=3] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=3, n=2] [L6] CALL f(n) VAL [\old(n)=2] [L4] COND TRUE n<3 VAL [\old(n)=2, n=2] [L6] RET f(n) VAL [\old(n)=3, n=2] [L7] __VERIFIER_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...