./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d05936c4bb1bb97a4b24ebc11d02c0e844c743b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-01 22:55:31,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 22:55:31,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 22:55:31,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 22:55:31,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 22:55:31,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 22:55:31,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 22:55:31,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 22:55:31,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 22:55:31,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 22:55:31,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 22:55:31,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 22:55:31,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 22:55:31,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 22:55:31,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 22:55:31,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 22:55:31,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 22:55:31,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 22:55:31,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 22:55:31,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 22:55:31,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 22:55:31,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 22:55:31,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 22:55:31,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 22:55:31,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 22:55:31,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 22:55:31,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 22:55:31,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 22:55:31,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 22:55:31,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 22:55:31,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 22:55:31,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 22:55:31,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 22:55:31,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 22:55:31,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 22:55:31,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 22:55:31,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 22:55:31,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 22:55:31,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 22:55:31,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 22:55:31,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 22:55:31,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 22:55:31,991 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 22:55:31,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 22:55:31,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 22:55:31,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 22:55:31,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 22:55:31,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 22:55:31,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 22:55:31,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 22:55:31,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 22:55:31,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 22:55:31,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 22:55:31,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 22:55:31,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 22:55:31,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 22:55:31,994 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 22:55:31,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 22:55:31,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 22:55:31,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 22:55:31,995 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 22:55:31,995 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 22:55:31,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 22:55:31,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 22:55:31,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 22:55:31,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 22:55:31,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 22:55:31,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 22:55:31,996 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 22:55:31,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 22:55:31,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 22:55:31,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d05936c4bb1bb97a4b24ebc11d02c0e844c743b [2019-12-01 22:55:32,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 22:55:32,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 22:55:32,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 22:55:32,128 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 22:55:32,128 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 22:55:32,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2019-12-01 22:55:32,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/data/1f020f73f/64da59e4a2374faab7e66b006e042bc2/FLAGfc799242c [2019-12-01 22:55:32,571 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 22:55:32,571 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/sv-benchmarks/c/recursive-simple/id_i20_o20-2.c [2019-12-01 22:55:32,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/data/1f020f73f/64da59e4a2374faab7e66b006e042bc2/FLAGfc799242c [2019-12-01 22:55:32,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/data/1f020f73f/64da59e4a2374faab7e66b006e042bc2 [2019-12-01 22:55:32,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 22:55:32,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 22:55:32,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 22:55:32,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 22:55:32,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 22:55:32,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715a4d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32, skipping insertion in model container [2019-12-01 22:55:32,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 22:55:32,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 22:55:32,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 22:55:32,705 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 22:55:32,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 22:55:32,763 INFO L208 MainTranslator]: Completed translation [2019-12-01 22:55:32,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32 WrapperNode [2019-12-01 22:55:32,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 22:55:32,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 22:55:32,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 22:55:32,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 22:55:32,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 22:55:32,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 22:55:32,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 22:55:32,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 22:55:32,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 22:55:32,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 22:55:32,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 22:55:32,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 22:55:32,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:55:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/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 [2019-12-01 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 22:55:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-12-01 22:55:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-12-01 22:55:32,925 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 22:55:32,925 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-01 22:55:32,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:55:32 BoogieIcfgContainer [2019-12-01 22:55:32,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 22:55:32,926 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 22:55:32,927 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 22:55:32,933 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 22:55:32,933 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:55:32" (1/1) ... [2019-12-01 22:55:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 22:55:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-12-01 22:55:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-01 22:55:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 22:55:32,967 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 22:55:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-12-01 22:55:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-01 22:55:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-01 22:55:33,219 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-01 22:55:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 23 states and 32 transitions. [2019-12-01 22:55:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-01 22:55:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-01 22:55:33,504 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-01 22:55:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 28 states and 44 transitions. [2019-12-01 22:55:33,868 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-12-01 22:55:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-01 22:55:33,869 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-01 22:55:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 33 states and 58 transitions. [2019-12-01 22:55:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-12-01 22:55:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-01 22:55:34,346 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-01 22:55:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 38 states and 74 transitions. [2019-12-01 22:55:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-12-01 22:55:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-01 22:55:34,851 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-01 22:55:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 43 states and 92 transitions. [2019-12-01 22:55:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 92 transitions. [2019-12-01 22:55:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-12-01 22:55:35,432 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-12-01 22:55:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 48 states and 112 transitions. [2019-12-01 22:55:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 112 transitions. [2019-12-01 22:55:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-01 22:55:36,081 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-12-01 22:55:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 53 states and 134 transitions. [2019-12-01 22:55:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 134 transitions. [2019-12-01 22:55:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-01 22:55:36,827 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-12-01 22:55:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 58 states and 158 transitions. [2019-12-01 22:55:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 158 transitions. [2019-12-01 22:55:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-01 22:55:37,639 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-12-01 22:55:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 63 states and 184 transitions. [2019-12-01 22:55:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 184 transitions. [2019-12-01 22:55:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-01 22:55:38,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-12-01 22:55:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 68 states and 212 transitions. [2019-12-01 22:55:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 212 transitions. [2019-12-01 22:55:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-01 22:55:39,527 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-12-01 22:55:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 73 states and 242 transitions. [2019-12-01 22:55:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 242 transitions. [2019-12-01 22:55:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-12-01 22:55:40,553 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-12-01 22:55:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 78 states and 274 transitions. [2019-12-01 22:55:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 274 transitions. [2019-12-01 22:55:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-12-01 22:55:41,666 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-12-01 22:55:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 83 states and 308 transitions. [2019-12-01 22:55:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 308 transitions. [2019-12-01 22:55:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-12-01 22:55:42,882 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-12-01 22:55:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 88 states and 344 transitions. [2019-12-01 22:55:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 344 transitions. [2019-12-01 22:55:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-12-01 22:55:44,353 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-12-01 22:55:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 93 states and 382 transitions. [2019-12-01 22:55:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 382 transitions. [2019-12-01 22:55:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-12-01 22:55:45,713 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-12-01 22:55:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 98 states and 422 transitions. [2019-12-01 22:55:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 422 transitions. [2019-12-01 22:55:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-12-01 22:55:47,148 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-12-01 22:55:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 103 states and 464 transitions. [2019-12-01 22:55:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 464 transitions. [2019-12-01 22:55:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-12-01 22:55:48,764 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2019-12-01 22:55:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 108 states and 508 transitions. [2019-12-01 22:55:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 508 transitions. [2019-12-01 22:55:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-12-01 22:55:50,348 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 22:55:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2019-12-01 22:55:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 22:55:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 113 states and 554 transitions. [2019-12-01 22:55:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 554 transitions. [2019-12-01 22:55:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-12-01 22:55:52,029 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 22:55:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:55:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:55:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:55:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 22:55:52,158 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2019-12-01 22:55:52,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 10:55:52 ImpRootNode [2019-12-01 22:55:52,194 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 22:55:52,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 22:55:52,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 22:55:52,194 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 22:55:52,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:55:32" (3/4) ... [2019-12-01 22:55:52,196 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 22:55:52,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3185cdff-c097-4d4c-b81e-4e0131dc9e74/bin/ukojak/witness.graphml [2019-12-01 22:55:52,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 22:55:52,255 INFO L168 Benchmark]: Toolchain (without parser) took 19667.57 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 338.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -240.5 MB). Peak memory consumption was 98.2 MB. Max. memory is 11.5 GB. [2019-12-01 22:55:52,255 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 22:55:52,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-01 22:55:52,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 22:55:52,256 INFO L168 Benchmark]: Boogie Preprocessor took 9.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 22:55:52,256 INFO L168 Benchmark]: RCFGBuilder took 133.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-01 22:55:52,257 INFO L168 Benchmark]: CodeCheck took 19267.12 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 225.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.4 MB). Peak memory consumption was 128.0 MB. Max. memory is 11.5 GB. [2019-12-01 22:55:52,257 INFO L168 Benchmark]: Witness Printer took 59.37 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-12-01 22:55:52,260 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: 19.2s, OverallIterations: 21, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5767168 SDtfs, 4194300 SDslu, 5242872 SDs, 0 SdLazy, 68157042 SolverSat, 14680046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30342 GetRequests, 29062 SyntacticMatches, 968 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38376 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 392080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 20; [L11] CALL, EXPR id(input) VAL [\old(x)=20] [L5] COND FALSE !(x==0) VAL [\old(x)=20, x=20] [L6] CALL, EXPR id(x-1) VAL [\old(x)=19] [L5] COND FALSE !(x==0) VAL [\old(x)=19, x=19] [L6] CALL, EXPR id(x-1) VAL [\old(x)=18] [L5] COND FALSE !(x==0) VAL [\old(x)=18, x=18] [L6] CALL, EXPR id(x-1) VAL [\old(x)=17] [L5] COND FALSE !(x==0) VAL [\old(x)=17, x=17] [L6] CALL, EXPR id(x-1) VAL [\old(x)=16] [L5] COND FALSE !(x==0) VAL [\old(x)=16, x=16] [L6] CALL, EXPR id(x-1) VAL [\old(x)=15] [L5] COND FALSE !(x==0) VAL [\old(x)=15, x=15] [L6] CALL, EXPR id(x-1) VAL [\old(x)=14] [L5] COND FALSE !(x==0) VAL [\old(x)=14, x=14] [L6] CALL, EXPR id(x-1) VAL [\old(x)=13] [L5] COND FALSE !(x==0) VAL [\old(x)=13, x=13] [L6] CALL, EXPR id(x-1) VAL [\old(x)=12] [L5] COND FALSE !(x==0) VAL [\old(x)=12, x=12] [L6] CALL, EXPR id(x-1) VAL [\old(x)=11] [L5] COND FALSE !(x==0) VAL [\old(x)=11, x=11] [L6] CALL, EXPR id(x-1) VAL [\old(x)=10] [L5] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L6] CALL, EXPR id(x-1) VAL [\old(x)=9] [L5] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L6] CALL, EXPR id(x-1) VAL [\old(x)=8] [L5] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L6] CALL, EXPR id(x-1) VAL [\old(x)=7] [L5] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L6] CALL, EXPR id(x-1) VAL [\old(x)=6] [L5] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L6] CALL, EXPR id(x-1) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=11, id(x-1)=10, x=11] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=12, id(x-1)=11, x=12] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=13, id(x-1)=12, x=13] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=14, id(x-1)=13, x=14] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=15, id(x-1)=14, x=15] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=16, id(x-1)=15, x=16] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=17, id(x-1)=16, x=17] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=18, id(x-1)=17, x=18] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=19, id(x-1)=18, x=19] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=20, id(x-1)=19, x=20] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 20 [L13] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * CodeCheck took 19267.12 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 225.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -97.4 MB). Peak memory consumption was 128.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.37 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB 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...