./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/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 0c292d0c9d9c055df9398b3303a92d6621b60758 .......................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 12:04:25,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:04:25,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:04:25,401 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:04:25,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:04:25,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:04:25,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:04:25,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:04:25,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:04:25,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:04:25,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:04:25,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:04:25,406 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:04:25,407 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:04:25,408 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:04:25,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:04:25,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:04:25,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:04:25,412 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:04:25,413 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:04:25,413 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:04:25,414 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:04:25,415 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:04:25,415 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:04:25,415 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:04:25,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:04:25,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:04:25,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:04:25,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:04:25,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:04:25,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:04:25,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:04:25,419 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:04:25,419 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:04:25,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:04:25,421 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:04:25,421 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 12:04:25,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:04:25,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:04:25,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:04:25,432 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:04:25,432 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:04:25,433 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:04:25,433 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:04:25,434 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:04:25,434 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 12:04:25,435 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 12:04:25,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:04:25,435 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:04:25,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 12:04:25,435 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:04:25,435 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:04:25,435 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:04:25,436 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 12:04:25,436 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:04:25,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:04:25,436 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_50049d9b-c6ee-43e6-9559-33cf43747e9b/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 -> 0c292d0c9d9c055df9398b3303a92d6621b60758 [2018-11-18 12:04:25,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:04:25,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:04:25,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:04:25,472 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:04:25,472 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:04:25,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c [2018-11-18 12:04:25,509 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/data/a95de9b87/fa69cae02b3145b8a89655aaf8cb9dd8/FLAG749b55d4c [2018-11-18 12:04:25,901 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:04:25,901 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c [2018-11-18 12:04:25,905 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/data/a95de9b87/fa69cae02b3145b8a89655aaf8cb9dd8/FLAG749b55d4c [2018-11-18 12:04:25,913 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/data/a95de9b87/fa69cae02b3145b8a89655aaf8cb9dd8 [2018-11-18 12:04:25,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:04:25,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:04:25,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:04:25,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:04:25,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:04:25,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:04:25" (1/1) ... [2018-11-18 12:04:25,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a96ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:25, skipping insertion in model container [2018-11-18 12:04:25,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:04:25" (1/1) ... [2018-11-18 12:04:25,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:04:25,935 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:04:26,034 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:04:26,036 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:04:26,045 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:04:26,053 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:04:26,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26 WrapperNode [2018-11-18 12:04:26,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:04:26,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:04:26,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:04:26,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:04:26,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:04:26,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:04:26,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:04:26,079 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:04:26,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:04:26,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:04:26,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:04:26,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:04:26,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:04:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/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 [2018-11-18 12:04:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:04:26,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:04:26,176 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-18 12:04:26,176 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-18 12:04:26,280 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:04:26,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:04:26 BoogieIcfgContainer [2018-11-18 12:04:26,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:04:26,281 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 12:04:26,281 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 12:04:26,291 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 12:04:26,291 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:04:26" (1/1) ... [2018-11-18 12:04:26,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:04:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-11-18 12:04:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-18 12:04:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 12:04:26,339 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:04:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2018-11-18 12:04:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-11-18 12:04:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 12:04:26,574 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 12:04:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2018-11-18 12:04:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-18 12:04:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:04:26,913 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 12:04:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2018-11-18 12:04:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-18 12:04:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 12:04:27,425 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 12:04:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2018-11-18 12:04:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-18 12:04:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 12:04:27,880 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-18 12:04:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 38 states and 45 transitions. [2018-11-18 12:04:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-18 12:04:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 12:04:28,446 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-18 12:04:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2018-11-18 12:04:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-18 12:04:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 12:04:29,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-18 12:04:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2018-11-18 12:04:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-11-18 12:04:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 12:04:29,801 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-18 12:04:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 53 states and 63 transitions. [2018-11-18 12:04:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2018-11-18 12:04:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 12:04:30,661 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-18 12:04:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 58 states and 69 transitions. [2018-11-18 12:04:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2018-11-18 12:04:31,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-18 12:04:31,629 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:04:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-18 12:04:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:04:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 63 states and 75 transitions. [2018-11-18 12:04:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2018-11-18 12:04:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-18 12:04:32,715 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:04:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:04:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:04:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:04:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:04:32,860 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-11-18 12:04:32,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 12:04:32 ImpRootNode [2018-11-18 12:04:32,891 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 12:04:32,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:04:32,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:04:32,891 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:04:32,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:04:26" (3/4) ... [2018-11-18 12:04:32,895 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 12:04:32,956 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_50049d9b-c6ee-43e6-9559-33cf43747e9b/bin-2019/ukojak/witness.graphml [2018-11-18 12:04:32,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:04:32,957 INFO L168 Benchmark]: Toolchain (without parser) took 7041.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 348.7 MB). Free memory was 953.8 MB in the beginning and 1.2 GB in the end (delta: -266.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:04:32,959 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:04:32,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.57 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:04:32,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.79 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:04:32,961 INFO L168 Benchmark]: Boogie Preprocessor took 12.96 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:04:32,962 INFO L168 Benchmark]: RCFGBuilder took 188.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -205.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:04:32,962 INFO L168 Benchmark]: CodeCheck took 6609.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -75.1 MB). Peak memory consumption was 111.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:04:32,963 INFO L168 Benchmark]: Witness Printer took 65.43 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:04:32,968 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, 16 locations, 1 error locations. UNSAFE Result, 6.5s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7168 SDtfs, 3068 SDslu, 5112 SDs, 0 SdLazy, 26584 SolverSat, 13292 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2080 GetRequests, 1806 SyntacticMatches, 126 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 62248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 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: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) VAL [\old(x)=10] [L5] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L6] CALL, EXPR id(x-1) VAL [\old(x)=9] [L5] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L6] CALL, EXPR id(x-1) VAL [\old(x)=8] [L5] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L6] CALL, EXPR id(x-1) VAL [\old(x)=7] [L5] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L6] CALL, EXPR id(x-1) VAL [\old(x)=6] [L5] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L6] CALL, EXPR id(x-1) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(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(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L6] RET return id(x-1) + 1; [L6] EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L6] RET return id(x-1) + 1; [L11] EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.57 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 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 24.79 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.96 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -205.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * CodeCheck took 6609.52 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -75.1 MB). Peak memory consumption was 111.5 MB. Max. memory is 11.5 GB. * Witness Printer took 65.43 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...