./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o20_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o20_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/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 d1286ba4e4f9d6c67aa5e4ab5d636bfd3afce4b1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-635dfa2 [2018-12-02 10:44:46,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 10:44:46,325 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 10:44:46,331 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 10:44:46,331 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 10:44:46,332 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 10:44:46,333 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 10:44:46,333 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 10:44:46,334 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 10:44:46,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 10:44:46,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 10:44:46,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 10:44:46,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 10:44:46,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 10:44:46,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 10:44:46,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 10:44:46,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 10:44:46,338 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 10:44:46,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 10:44:46,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 10:44:46,340 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 10:44:46,341 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 10:44:46,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 10:44:46,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 10:44:46,342 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 10:44:46,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 10:44:46,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 10:44:46,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 10:44:46,343 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 10:44:46,344 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 10:44:46,344 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 10:44:46,344 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 10:44:46,344 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 10:44:46,345 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 10:44:46,345 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 10:44:46,345 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 10:44:46,346 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-02 10:44:46,352 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 10:44:46,353 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 10:44:46,353 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 10:44:46,353 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-02 10:44:46,353 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 10:44:46,354 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 10:44:46,354 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 10:44:46,355 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 10:44:46,355 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 10:44:46,355 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 10:44:46,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 10:44:46,355 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_1eb89bc3-c957-4670-8f21-8ec67186930a/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 -> d1286ba4e4f9d6c67aa5e4ab5d636bfd3afce4b1 [2018-12-02 10:44:46,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 10:44:46,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 10:44:46,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 10:44:46,385 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 10:44:46,385 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 10:44:46,385 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_o20_false-unreach-call_true-termination_true-no-overflow.c [2018-12-02 10:44:46,429 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/data/f966d219a/e77cb0103f2c48e2b02618b33721adb6/FLAG554701a5d [2018-12-02 10:44:46,799 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 10:44:46,800 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/sv-benchmarks/c/recursive-simple/id_o20_false-unreach-call_true-termination_true-no-overflow.c [2018-12-02 10:44:46,803 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/data/f966d219a/e77cb0103f2c48e2b02618b33721adb6/FLAG554701a5d [2018-12-02 10:44:46,811 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/data/f966d219a/e77cb0103f2c48e2b02618b33721adb6 [2018-12-02 10:44:46,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 10:44:46,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 10:44:46,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 10:44:46,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 10:44:46,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 10:44:46,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7084b22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46, skipping insertion in model container [2018-12-02 10:44:46,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 10:44:46,832 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 10:44:46,912 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 10:44:46,914 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 10:44:46,922 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 10:44:46,930 INFO L195 MainTranslator]: Completed translation [2018-12-02 10:44:46,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46 WrapperNode [2018-12-02 10:44:46,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 10:44:46,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 10:44:46,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 10:44:46,931 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 10:44:46,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 10:44:46,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 10:44:46,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 10:44:46,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 10:44:46,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... [2018-12-02 10:44:46,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 10:44:46,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 10:44:46,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 10:44:46,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 10:44:46,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:44:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/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 [2018-12-02 10:44:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 10:44:47,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 10:44:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-02 10:44:47,015 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-02 10:44:47,089 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 10:44:47,090 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 10:44:47,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:44:47 BoogieIcfgContainer [2018-12-02 10:44:47,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 10:44:47,090 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 10:44:47,090 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 10:44:47,096 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 10:44:47,096 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:44:47" (1/1) ... [2018-12-02 10:44:47,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 10:44:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-12-02 10:44:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-12-02 10:44:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 10:44:47,128 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 10:44:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2018-12-02 10:44:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2018-12-02 10:44:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 10:44:47,312 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 10:44:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2018-12-02 10:44:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-02 10:44:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 10:44:47,577 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 10:44:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2018-12-02 10:44:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-12-02 10:44:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 10:44:47,899 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-02 10:44:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 33 states and 39 transitions. [2018-12-02 10:44:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-02 10:44:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 10:44:48,335 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-02 10:44:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 38 states and 45 transitions. [2018-12-02 10:44:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-02 10:44:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-02 10:44:48,822 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-02 10:44:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2018-12-02 10:44:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-02 10:44:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 10:44:49,582 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-02 10:44:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2018-12-02 10:44:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-12-02 10:44:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-02 10:44:50,322 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-02 10:44:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 53 states and 63 transitions. [2018-12-02 10:44:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2018-12-02 10:44:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-02 10:44:51,441 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-12-02 10:44:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 58 states and 69 transitions. [2018-12-02 10:44:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2018-12-02 10:44:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-12-02 10:44:52,375 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-12-02 10:44:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 63 states and 75 transitions. [2018-12-02 10:44:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2018-12-02 10:44:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-02 10:44:54,206 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-12-02 10:44:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 68 states and 81 transitions. [2018-12-02 10:44:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2018-12-02 10:44:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-12-02 10:44:55,744 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-12-02 10:44:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:44:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 73 states and 87 transitions. [2018-12-02 10:44:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2018-12-02 10:44:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-02 10:44:58,730 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:44:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:44:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-12-02 10:45:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 78 states and 93 transitions. [2018-12-02 10:45:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2018-12-02 10:45:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-02 10:45:00,780 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-12-02 10:45:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 83 states and 99 transitions. [2018-12-02 10:45:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2018-12-02 10:45:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-12-02 10:45:04,103 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-12-02 10:45:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 88 states and 105 transitions. [2018-12-02 10:45:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2018-12-02 10:45:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-12-02 10:45:06,091 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-12-02 10:45:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 93 states and 111 transitions. [2018-12-02 10:45:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2018-12-02 10:45:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-12-02 10:45:10,715 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-12-02 10:45:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 98 states and 117 transitions. [2018-12-02 10:45:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2018-12-02 10:45:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-12-02 10:45:15,411 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-12-02 10:45:16,896 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2018-12-02 10:45:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 103 states and 123 transitions. [2018-12-02 10:45:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2018-12-02 10:45:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-12-02 10:45:18,061 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2018-12-02 10:45:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 108 states and 129 transitions. [2018-12-02 10:45:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2018-12-02 10:45:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-12-02 10:45:21,837 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 10:45:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-12-02 10:45:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 10:45:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 113 states and 135 transitions. [2018-12-02 10:45:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2018-12-02 10:45:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-12-02 10:45:24,818 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 10:45:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 10:45:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 10:45:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 10:45:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 10:45:31,504 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2018-12-02 10:45:31,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 10:45:31 ImpRootNode [2018-12-02 10:45:31,539 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 10:45:31,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 10:45:31,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 10:45:31,540 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 10:45:31,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:44:47" (3/4) ... [2018-12-02 10:45:31,542 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 10:45:31,603 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1eb89bc3-c957-4670-8f21-8ec67186930a/bin-2019/ukojak/witness.graphml [2018-12-02 10:45:31,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 10:45:31,603 INFO L168 Benchmark]: Toolchain (without parser) took 44789.96 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.1 MB). Free memory was 953.3 MB in the beginning and 903.9 MB in the end (delta: 49.3 MB). Peak memory consumption was 288.4 MB. Max. memory is 11.5 GB. [2018-12-02 10:45:31,604 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 10:45:31,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-02 10:45:31,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.80 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 10:45:31,605 INFO L168 Benchmark]: Boogie Preprocessor took 8.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 10:45:31,605 INFO L168 Benchmark]: RCFGBuilder took 134.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-12-02 10:45:31,606 INFO L168 Benchmark]: CodeCheck took 44448.94 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 146.8 MB). Free memory was 1.1 GB in the beginning and 903.9 MB in the end (delta: 177.2 MB). Peak memory consumption was 324.0 MB. Max. memory is 11.5 GB. [2018-12-02 10:45:31,606 INFO L168 Benchmark]: Witness Printer took 63.63 ms. Allocated memory is still 1.3 GB. Free memory is still 903.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 10:45:31,608 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, 15 locations, 1 error locations. UNSAFE Result, 44.3s OverallTime, 21 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7340032 SDtfs, 3145724 SDslu, 5242872 SDs, 0 SdLazy, 27262936 SolverSat, 13631468 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7075 GetRequests, 6216 SyntacticMatches, 551 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34910 ImplicationChecksByTransitivity, 36.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 438928 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 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)=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] unsigned 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 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.80 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 8.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * CodeCheck took 44448.94 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 146.8 MB). Free memory was 1.1 GB in the beginning and 903.9 MB in the end (delta: 177.2 MB). Peak memory consumption was 324.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.63 ms. Allocated memory is still 1.3 GB. Free memory is still 903.9 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...