./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/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 7d05936c4bb1bb97a4b24ebc11d02c0e844c743b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 03:00:54,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:00:54,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:00:54,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:00:54,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:00:54,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:00:54,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:00:54,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:00:54,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:00:54,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:00:54,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:00:54,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:00:54,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:00:54,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:00:54,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:00:54,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:00:54,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:00:54,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:00:54,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:00:54,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:00:54,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:00:54,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:00:54,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:00:54,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:00:54,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:00:54,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:00:54,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:00:54,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:00:54,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:00:54,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:00:54,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:00:54,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:00:54,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:00:54,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:00:54,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:00:54,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:00:54,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:00:54,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:00:54,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:00:54,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:00:54,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:00:54,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-26 03:00:54,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:00:54,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:00:54,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:00:54,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-26 03:00:54,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 03:00:54,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 03:00:54,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:00:54,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:00:54,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:00:54,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:00:54,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:00:54,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:00:54,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:00:54,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:00:54,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:00:54,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:00:54,139 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 03:00:54,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:00:54,139 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-26 03:00:54,139 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-26 03:00:54,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:00:54,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:00:54,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-26 03:00:54,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:00:54,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:00:54,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:00:54,141 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-26 03:00:54,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:00:54,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:00:54,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 7d05936c4bb1bb97a4b24ebc11d02c0e844c743b [2019-11-26 03:00:54,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:00:54,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:00:54,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:00:54,300 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:00:54,304 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:00:54,305 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2019-11-26 03:00:54,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/data/46c811020/26f2b785a4bc40e8b716f9ed73e73eac/FLAG70f8f5bc9 [2019-11-26 03:00:54,711 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:00:54,713 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2019-11-26 03:00:54,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/data/46c811020/26f2b785a4bc40e8b716f9ed73e73eac/FLAG70f8f5bc9 [2019-11-26 03:00:55,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/data/46c811020/26f2b785a4bc40e8b716f9ed73e73eac [2019-11-26 03:00:55,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:00:55,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:00:55,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:55,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:00:55,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:00:55,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601c9fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55, skipping insertion in model container [2019-11-26 03:00:55,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:00:55,127 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:00:55,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:55,252 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:00:55,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:55,332 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:00:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55 WrapperNode [2019-11-26 03:00:55,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:55,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:55,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:00:55,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:00:55,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:55,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:00:55,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:00:55,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:00:55,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:00:55,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:00:55,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:00:55,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:00:55,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-26 03:00:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:00:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:00:55,442 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-26 03:00:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-26 03:00:55,587 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:00:55,587 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 03:00:55,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:55 BoogieIcfgContainer [2019-11-26 03:00:55,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:00:55,588 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-26 03:00:55,588 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-26 03:00:55,598 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-26 03:00:55,598 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:55" (1/1) ... [2019-11-26 03:00:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-11-26 03:00:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-26 03:00:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 03:00:55,638 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:00:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-11-26 03:00:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-26 03:00:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 03:00:56,039 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 03:00:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 23 states and 32 transitions. [2019-11-26 03:00:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-11-26 03:00:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 03:00:56,598 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-26 03:00:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 28 states and 44 transitions. [2019-11-26 03:00:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-11-26 03:00:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 03:00:57,330 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-26 03:00:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 33 states and 58 transitions. [2019-11-26 03:00:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-11-26 03:00:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 03:00:58,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-26 03:00:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 38 states and 74 transitions. [2019-11-26 03:00:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-11-26 03:00:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 03:00:58,986 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-26 03:00:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:00:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 43 states and 92 transitions. [2019-11-26 03:00:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 92 transitions. [2019-11-26 03:00:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-26 03:00:59,856 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:00:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-26 03:01:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 48 states and 112 transitions. [2019-11-26 03:01:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 112 transitions. [2019-11-26 03:01:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-26 03:01:00,833 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-26 03:01:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 53 states and 134 transitions. [2019-11-26 03:01:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 134 transitions. [2019-11-26 03:01:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-26 03:01:02,065 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-11-26 03:01:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 58 states and 158 transitions. [2019-11-26 03:01:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 158 transitions. [2019-11-26 03:01:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-26 03:01:03,398 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-26 03:01:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 63 states and 184 transitions. [2019-11-26 03:01:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 184 transitions. [2019-11-26 03:01:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-26 03:01:04,673 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-11-26 03:01:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 68 states and 212 transitions. [2019-11-26 03:01:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 212 transitions. [2019-11-26 03:01:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-26 03:01:06,195 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-11-26 03:01:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 73 states and 242 transitions. [2019-11-26 03:01:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 242 transitions. [2019-11-26 03:01:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-26 03:01:07,723 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-11-26 03:01:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 78 states and 274 transitions. [2019-11-26 03:01:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 274 transitions. [2019-11-26 03:01:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-26 03:01:09,308 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-11-26 03:01:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 83 states and 308 transitions. [2019-11-26 03:01:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 308 transitions. [2019-11-26 03:01:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-26 03:01:10,947 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-11-26 03:01:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 88 states and 344 transitions. [2019-11-26 03:01:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 344 transitions. [2019-11-26 03:01:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-26 03:01:12,670 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-26 03:01:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 93 states and 382 transitions. [2019-11-26 03:01:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 382 transitions. [2019-11-26 03:01:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-26 03:01:14,674 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-11-26 03:01:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 98 states and 422 transitions. [2019-11-26 03:01:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 422 transitions. [2019-11-26 03:01:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-26 03:01:16,778 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-11-26 03:01:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 103 states and 464 transitions. [2019-11-26 03:01:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 464 transitions. [2019-11-26 03:01:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-26 03:01:18,803 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-11-26 03:01:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 108 states and 508 transitions. [2019-11-26 03:01:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 508 transitions. [2019-11-26 03:01:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-26 03:01:21,121 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2019-11-26 03:01:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 03:01:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 113 states and 554 transitions. [2019-11-26 03:01:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 554 transitions. [2019-11-26 03:01:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-26 03:01:23,624 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 03:01:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:23,819 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2019-11-26 03:01:23,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.11 03:01:23 ImpRootNode [2019-11-26 03:01:23,907 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-26 03:01:23,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:01:23,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:01:23,908 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:01:23,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:55" (3/4) ... [2019-11-26 03:01:23,911 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 03:01:24,010 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_84b13d55-fdea-4cea-8c71-1aee11c0324f/bin/ukojak/witness.graphml [2019-11-26 03:01:24,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:01:24,017 INFO L168 Benchmark]: Toolchain (without parser) took 28913.71 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 393.7 MB). Free memory was 944.8 MB in the beginning and 927.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 411.5 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:24,018 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:24,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:24,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:24,019 INFO L168 Benchmark]: Boogie Preprocessor took 11.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:24,020 INFO L168 Benchmark]: RCFGBuilder took 212.43 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:24,020 INFO L168 Benchmark]: CodeCheck took 28318.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 253.2 MB). Free memory was 1.1 GB in the beginning and 930.6 MB in the end (delta: 186.2 MB). Peak memory consumption was 439.5 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:24,021 INFO L168 Benchmark]: Witness Printer took 107.93 ms. Allocated memory is still 1.4 GB. Free memory was 930.6 MB in the beginning and 927.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:24,023 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 28.2s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5767168 SDtfs, 4194300 SDslu, 5242872 SDs, 0 SdLazy, 68157042 SolverSat, 14680046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30342 GetRequests, 29062 SyntacticMatches, 968 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38376 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 392080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 20; [L11] CALL, EXPR id(input) VAL [\old(x)=20] [L5] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L6] CALL, EXPR id(x-1) VAL [\old(x)=19] [L5] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L6] CALL, EXPR id(x-1) VAL [\old(x)=18] [L5] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L6] CALL, EXPR id(x-1) VAL [\old(x)=17] [L5] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L6] CALL, EXPR id(x-1) VAL [\old(x)=16] [L5] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L6] CALL, EXPR id(x-1) VAL [\old(x)=15] [L5] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L6] CALL, EXPR id(x-1) VAL [\old(x)=14] [L5] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L6] CALL, EXPR id(x-1) VAL [\old(x)=13] [L5] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L6] CALL, EXPR id(x-1) VAL [\old(x)=12] [L5] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L6] CALL, EXPR id(x-1) VAL [\old(x)=11] [L5] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L6] CALL, EXPR id(x-1) 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] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 20 [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 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 212.43 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * CodeCheck took 28318.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 253.2 MB). Free memory was 1.1 GB in the beginning and 930.6 MB in the end (delta: 186.2 MB). Peak memory consumption was 439.5 MB. Max. memory is 11.5 GB. * Witness Printer took 107.93 ms. Allocated memory is still 1.4 GB. Free memory was 930.6 MB in the beginning and 927.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...