./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id_o3_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_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/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 9b6c190b845f4496788acb9553cb85e1e7dace14 ...................................................................................................................................................................................................................................................... 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 [2018-11-10 11:46:16,248 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:46:16,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:46:16,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:46:16,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:46:16,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:46:16,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:46:16,262 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:46:16,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:46:16,264 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:46:16,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:46:16,265 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:46:16,265 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:46:16,266 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:46:16,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:46:16,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:46:16,268 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:46:16,270 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:46:16,271 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:46:16,272 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:46:16,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:46:16,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:46:16,275 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:46:16,276 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:46:16,276 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:46:16,277 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:46:16,277 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:46:16,278 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:46:16,279 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:46:16,279 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:46:16,280 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:46:16,280 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:46:16,280 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:46:16,281 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:46:16,281 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:46:16,282 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:46:16,282 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 11:46:16,293 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:46:16,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:46:16,294 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:46:16,294 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:46:16,295 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:46:16,295 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:46:16,295 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:46:16,295 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:46:16,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:46:16,297 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:46:16,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:46:16,297 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 11:46:16,297 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 11:46:16,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:46:16,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:46:16,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 11:46:16,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:46:16,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:46:16,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:46:16,298 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 11:46:16,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:46:16,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:46:16,299 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_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/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 -> 9b6c190b845f4496788acb9553cb85e1e7dace14 [2018-11-10 11:46:16,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:46:16,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:46:16,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:46:16,341 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:46:16,342 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:46:16,342 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c [2018-11-10 11:46:16,389 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/data/8416a0ad5/935dbba965f1474791815e107daa564d/FLAGff705970f [2018-11-10 11:46:16,731 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:46:16,731 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/sv-benchmarks/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c [2018-11-10 11:46:16,735 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/data/8416a0ad5/935dbba965f1474791815e107daa564d/FLAGff705970f [2018-11-10 11:46:16,745 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/data/8416a0ad5/935dbba965f1474791815e107daa564d [2018-11-10 11:46:16,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:46:16,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:46:16,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:46:16,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:46:16,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:46:16,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f62aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16, skipping insertion in model container [2018-11-10 11:46:16,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:46:16,774 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:46:16,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:46:16,888 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:46:16,899 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:46:16,909 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:46:16,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16 WrapperNode [2018-11-10 11:46:16,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:46:16,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:46:16,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:46:16,911 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:46:16,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:46:16,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:46:16,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:46:16,937 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:46:16,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... [2018-11-10 11:46:16,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:46:16,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:46:16,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:46:16,948 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:46:16,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:46:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/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 [2018-11-10 11:46:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:46:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:46:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-10 11:46:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-10 11:46:17,147 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:46:17,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:46:17 BoogieIcfgContainer [2018-11-10 11:46:17,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:46:17,148 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 11:46:17,148 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 11:46:17,158 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 11:46:17,159 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:46:17" (1/1) ... [2018-11-10 11:46:17,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:46:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 11:46:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-11-10 11:46:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-10 11:46:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 11:46:17,214 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 11:46:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:46:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:46:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 11:46:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2018-11-10 11:46:17,439 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-11-10 11:46:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 11:46:17,440 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 11:46:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:46:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:46:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 11:46:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2018-11-10 11:46:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-10 11:46:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 11:46:17,807 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 11:46:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:46:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 11:46:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 11:46:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2018-11-10 11:46:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-10 11:46:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 11:46:18,295 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 11:46:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:46:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:46:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:46:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:46:18,381 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2018-11-10 11:46:18,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 11:46:18 ImpRootNode [2018-11-10 11:46:18,412 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 11:46:18,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:46:18,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:46:18,413 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:46:18,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:46:17" (3/4) ... [2018-11-10 11:46:18,416 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:46:18,454 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_73cf8b22-55ab-4a8d-b686-0b6c5f8e761c/bin-2019/ukojak/witness.graphml [2018-11-10 11:46:18,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:46:18,455 INFO L168 Benchmark]: Toolchain (without parser) took 1707.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 959.1 MB in the beginning and 955.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 145.3 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,457 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:46:18,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.68 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.39 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:46:18,459 INFO L168 Benchmark]: Boogie Preprocessor took 10.80 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,460 INFO L168 Benchmark]: RCFGBuilder took 199.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,461 INFO L168 Benchmark]: CodeCheck took 1264.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.8 MB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,462 INFO L168 Benchmark]: Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 958.8 MB in the beginning and 955.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:46:18,468 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, 1.2s OverallTime, 4 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 20 SDslu, 32 SDs, 0 SdLazy, 168 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 9/18 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)=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; [L11] EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 3 [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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.68 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.39 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.80 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 199.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * CodeCheck took 1264.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.8 MB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.20 ms. Allocated memory is still 1.2 GB. Free memory was 958.8 MB in the beginning and 955.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...