./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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/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_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/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 0.1.23-1dbac8b [2018-11-09 23:05:11,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 23:05:11,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 23:05:11,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 23:05:11,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 23:05:11,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 23:05:11,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 23:05:11,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 23:05:11,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 23:05:11,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 23:05:11,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 23:05:11,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 23:05:11,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 23:05:11,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 23:05:11,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 23:05:11,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 23:05:11,223 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 23:05:11,225 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 23:05:11,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 23:05:11,227 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 23:05:11,228 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 23:05:11,228 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 23:05:11,230 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 23:05:11,230 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 23:05:11,230 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 23:05:11,231 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 23:05:11,231 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 23:05:11,232 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 23:05:11,232 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 23:05:11,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 23:05:11,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 23:05:11,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 23:05:11,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 23:05:11,234 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 23:05:11,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 23:05:11,235 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 23:05:11,235 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-09 23:05:11,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 23:05:11,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 23:05:11,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 23:05:11,246 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 23:05:11,247 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 23:05:11,247 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 23:05:11,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 23:05:11,247 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 23:05:11,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 23:05:11,247 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 23:05:11,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 23:05:11,248 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 23:05:11,249 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-09 23:05:11,249 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-09 23:05:11,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 23:05:11,250 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 23:05:11,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-09 23:05:11,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 23:05:11,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 23:05:11,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 23:05:11,250 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-09 23:05:11,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 23:05:11,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-09 23:05:11,251 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_9f79253c-fb76-4b62-962d-3e88cdaa2e74/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 [2018-11-09 23:05:11,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 23:05:11,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 23:05:11,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 23:05:11,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 23:05:11,285 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 23:05:11,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c [2018-11-09 23:05:11,322 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/data/ba2c4ebe6/1a3cc086ff5b4309b508a4aae9074fc6/FLAG6e8c11fc7 [2018-11-09 23:05:11,712 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 23:05:11,713 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/sv-benchmarks/c/recursive-simple/id_o10_false-unreach-call_true-termination_true-no-overflow.c [2018-11-09 23:05:11,716 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/data/ba2c4ebe6/1a3cc086ff5b4309b508a4aae9074fc6/FLAG6e8c11fc7 [2018-11-09 23:05:11,725 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/data/ba2c4ebe6/1a3cc086ff5b4309b508a4aae9074fc6 [2018-11-09 23:05:11,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 23:05:11,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-09 23:05:11,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 23:05:11,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 23:05:11,732 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 23:05:11,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8b0baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11, skipping insertion in model container [2018-11-09 23:05:11,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 23:05:11,749 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 23:05:11,845 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:05:11,847 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 23:05:11,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:05:11,865 INFO L193 MainTranslator]: Completed translation [2018-11-09 23:05:11,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11 WrapperNode [2018-11-09 23:05:11,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 23:05:11,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-09 23:05:11,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-09 23:05:11,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-09 23:05:11,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-09 23:05:11,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 23:05:11,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 23:05:11,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 23:05:11,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... [2018-11-09 23:05:11,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 23:05:11,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 23:05:11,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 23:05:11,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 23:05:11,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:05:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/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 [2018-11-09 23:05:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 23:05:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 23:05:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-09 23:05:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-09 23:05:12,069 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 23:05:12,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:05:12 BoogieIcfgContainer [2018-11-09 23:05:12,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 23:05:12,070 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-09 23:05:12,070 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-09 23:05:12,079 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-09 23:05:12,079 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:05:12" (1/1) ... [2018-11-09 23:05:12,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:05:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-11-09 23:05:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-09 23:05:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-09 23:05:12,129 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:05:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2018-11-09 23:05:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-11-09 23:05:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-09 23:05:12,325 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:05:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2018-11-09 23:05:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-09 23:05:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-09 23:05:12,720 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-09 23:05:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2018-11-09 23:05:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-09 23:05:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-09 23:05:13,121 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-09 23:05:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2018-11-09 23:05:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-11-09 23:05:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-09 23:05:13,596 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-09 23:05:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 38 states and 45 transitions. [2018-11-09 23:05:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-09 23:05:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-09 23:05:14,177 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-09 23:05:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2018-11-09 23:05:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-09 23:05:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-09 23:05:14,833 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-09 23:05:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2018-11-09 23:05:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-11-09 23:05:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-09 23:05:15,653 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-09 23:05:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 53 states and 63 transitions. [2018-11-09 23:05:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2018-11-09 23:05:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-09 23:05:16,560 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-09 23:05:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 58 states and 69 transitions. [2018-11-09 23:05:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2018-11-09 23:05:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-09 23:05:17,671 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:05:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-09 23:05:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:05:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 63 states and 75 transitions. [2018-11-09 23:05:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2018-11-09 23:05:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-09 23:05:18,833 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:05:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:05:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:05:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:05:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:05:18,950 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-11-09 23:05:18,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 11:05:18 ImpRootNode [2018-11-09 23:05:18,978 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-09 23:05:18,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 23:05:18,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 23:05:18,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 23:05:18,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:05:12" (3/4) ... [2018-11-09 23:05:18,982 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-09 23:05:19,035 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9f79253c-fb76-4b62-962d-3e88cdaa2e74/bin-2019/ukojak/witness.graphml [2018-11-09 23:05:19,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 23:05:19,036 INFO L168 Benchmark]: Toolchain (without parser) took 7308.49 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 341.3 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 179.1 MB. Max. memory is 11.5 GB. [2018-11-09 23:05:19,038 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-11-09 23:05:19,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:05:19,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:05:19,039 INFO L168 Benchmark]: Boogie Preprocessor took 9.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:05:19,040 INFO L168 Benchmark]: RCFGBuilder took 175.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-09 23:05:19,040 INFO L168 Benchmark]: CodeCheck took 6908.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.0 MB). Peak memory consumption was 208.2 MB. Max. memory is 11.5 GB. [2018-11-09 23:05:19,042 INFO L168 Benchmark]: Witness Printer took 57.00 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:05:19,045 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, 6.8s 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, 7350 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 60880 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 0.11 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 136.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 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 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.29 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * CodeCheck took 6908.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 198.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.0 MB). Peak memory consumption was 208.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.00 ms. Allocated memory is still 1.4 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...