./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o10.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/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 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 0.1.24-cad4683 [2019-10-22 10:12:13,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:12:13,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:12:13,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:12:13,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:12:13,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:12:13,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:12:13,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:12:13,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:12:13,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:12:13,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:12:13,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:12:13,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:12:13,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:12:13,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:12:13,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:12:13,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:12:13,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:12:13,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:12:13,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:12:13,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:12:13,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:12:13,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:12:13,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:12:13,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:12:13,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:12:13,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:12:13,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:12:13,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:12:13,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:12:13,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:12:13,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:12:13,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:12:13,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:12:13,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:12:13,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:12:13,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:12:13,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:12:13,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:12:13,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:12:13,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:12:13,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:12:13,380 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:12:13,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:12:13,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:12:13,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:12:13,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:12:13,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:12:13,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:12:13,383 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:12:13,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:12:13,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:12:13,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:12:13,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:12:13,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:12:13,385 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:12:13,385 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:12:13,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:12:13,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:12:13,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:12:13,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:12:13,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:12:13,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:12:13,387 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:12:13,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:12:13,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:12:13,387 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/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/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 -> 0c292d0c9d9c055df9398b3303a92d6621b60758 [2019-10-22 10:12:13,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:12:13,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:12:13,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:12:13,427 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:12:13,428 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:12:13,428 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_o10.c [2019-10-22 10:12:13,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/data/e60afc45d/f23d2c95b054429ca028603d3f1086ed/FLAGc6f232fc4 [2019-10-22 10:12:13,897 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:12:13,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/sv-benchmarks/c/recursive-simple/id_o10.c [2019-10-22 10:12:13,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/data/e60afc45d/f23d2c95b054429ca028603d3f1086ed/FLAGc6f232fc4 [2019-10-22 10:12:14,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/data/e60afc45d/f23d2c95b054429ca028603d3f1086ed [2019-10-22 10:12:14,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:12:14,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:12:14,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:14,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:12:14,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:12:14,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c352c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14, skipping insertion in model container [2019-10-22 10:12:14,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,318 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:12:14,330 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:12:14,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:14,505 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:12:14,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:14,589 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:12:14,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14 WrapperNode [2019-10-22 10:12:14,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:14,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:14,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:12:14,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:12:14,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:14,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:12:14,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:12:14,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:12:14,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:12:14,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:12:14,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:12:14,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:12:14,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/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 [2019-10-22 10:12:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:12:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:12:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 10:12:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 10:12:14,805 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:12:14,805 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 10:12:14,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:14 BoogieIcfgContainer [2019-10-22 10:12:14,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:12:14,806 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:12:14,806 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:12:14,814 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:12:14,814 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:14" (1/1) ... [2019-10-22 10:12:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:12:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-10-22 10:12:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-22 10:12:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:12:14,851 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:12:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2019-10-22 10:12:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-10-22 10:12:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 10:12:15,152 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 10:12:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2019-10-22 10:12:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-22 10:12:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:12:15,554 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 10:12:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2019-10-22 10:12:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-22 10:12:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 10:12:16,139 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 10:12:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2019-10-22 10:12:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-10-22 10:12:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 10:12:16,853 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 10:12:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 38 states and 45 transitions. [2019-10-22 10:12:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-22 10:12:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 10:12:17,571 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 10:12:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2019-10-22 10:12:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-10-22 10:12:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 10:12:18,445 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-22 10:12:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2019-10-22 10:12:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-22 10:12:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-22 10:12:19,421 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-22 10:12:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 53 states and 63 transitions. [2019-10-22 10:12:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2019-10-22 10:12:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-22 10:12:20,537 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-10-22 10:12:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 58 states and 69 transitions. [2019-10-22 10:12:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-10-22 10:12:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 10:12:21,771 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-10-22 10:12:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 63 states and 75 transitions. [2019-10-22 10:12:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2019-10-22 10:12:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 10:12:23,202 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:24,165 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2019-10-22 10:12:24,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:12:24 ImpRootNode [2019-10-22 10:12:24,206 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:12:24,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:12:24,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:12:24,206 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:12:24,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:14" (3/4) ... [2019-10-22 10:12:24,209 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:12:24,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cd4d9d15-32da-41aa-8d0d-e7f730e9f024/bin/ukojak/witness.graphml [2019-10-22 10:12:24,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:12:24,258 INFO L168 Benchmark]: Toolchain (without parser) took 9956.67 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 943.3 MB in the beginning and 894.0 MB in the end (delta: 49.3 MB). Peak memory consumption was 271.6 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,259 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:12:24,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.65 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,260 INFO L168 Benchmark]: Boogie Preprocessor took 13.04 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,261 INFO L168 Benchmark]: RCFGBuilder took 175.00 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,261 INFO L168 Benchmark]: CodeCheck took 9399.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 896.4 MB in the end (delta: 234.0 MB). Peak memory consumption was 306.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,262 INFO L168 Benchmark]: Witness Printer took 50.37 ms. Allocated memory is still 1.3 GB. Free memory was 896.4 MB in the beginning and 894.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:24,264 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: 9.3s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7168 SDtfs, 3068 SDslu, 5112 SDs, 0 SdLazy, 26584 SolverSat, 13292 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2080 GetRequests, 1806 SyntacticMatches, 126 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s 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 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] 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; [L11] RET, 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 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.65 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.04 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.00 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * CodeCheck took 9399.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 896.4 MB in the end (delta: 234.0 MB). Peak memory consumption was 306.3 MB. Max. memory is 11.5 GB. * Witness Printer took 50.37 ms. Allocated memory is still 1.3 GB. Free memory was 896.4 MB in the beginning and 894.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...