./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f .................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-b2eff8b [2021-10-29 04:11:52,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:11:52,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:11:52,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:11:52,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:11:52,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:11:52,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:11:52,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:11:52,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:11:52,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:11:52,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:11:52,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:11:52,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:11:52,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:11:52,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:11:52,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:11:52,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:11:52,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:11:52,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:11:52,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:11:52,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:11:52,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:11:52,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:11:52,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:11:52,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:11:52,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:11:52,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:11:52,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:11:52,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:11:52,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:11:52,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:11:52,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:11:52,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:11:53,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:11:53,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:11:53,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:11:53,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:11:53,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:11:53,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:11:53,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:11:53,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:11:53,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 04:11:53,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:11:53,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:11:53,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:11:53,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 04:11:53,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:11:53,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:11:53,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:11:53,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:11:53,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:11:53,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:11:53,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:11:53,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:11:53,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:11:53,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:11:53,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:11:53,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:11:53,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:11:53,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:11:53,073 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 04:11:53,073 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 04:11:53,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:11:53,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:11:53,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:11:53,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:11:53,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:11:53,074 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 04:11:53,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:11:53,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:11:53,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2021-10-29 04:11:53,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:11:53,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:11:53,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:11:53,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:11:53,400 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:11:53,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2021-10-29 04:11:53,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/data/aac7a5fc2/d0de50d951424a0abc8166d4788abe32/FLAG02e1db84d [2021-10-29 04:11:53,965 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:11:53,967 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2021-10-29 04:11:53,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/data/aac7a5fc2/d0de50d951424a0abc8166d4788abe32/FLAG02e1db84d [2021-10-29 04:11:54,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/data/aac7a5fc2/d0de50d951424a0abc8166d4788abe32 [2021-10-29 04:11:54,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:11:54,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:11:54,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:11:54,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:11:54,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:11:54,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f5304c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54, skipping insertion in model container [2021-10-29 04:11:54,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:11:54,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:11:54,552 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2021-10-29 04:11:54,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:11:54,570 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:11:54,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2021-10-29 04:11:54,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:11:54,609 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:11:54,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54 WrapperNode [2021-10-29 04:11:54,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:11:54,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:11:54,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:11:54,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:11:54,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:11:54,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:11:54,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:11:54,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:11:54,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:11:54,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:11:54,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:11:54,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:11:54,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:11:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 04:11:54,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 04:11:54,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 04:11:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:11:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-29 04:11:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-29 04:11:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:11:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-29 04:11:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-29 04:11:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:11:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:11:54,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:11:54,956 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 04:11:54,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:54 BoogieIcfgContainer [2021-10-29 04:11:54,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:11:54,959 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 04:11:54,960 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 04:11:54,970 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 04:11:54,971 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:54" (1/1) ... [2021-10-29 04:11:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:11:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2021-10-29 04:11:55,061 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-10-29 04:11:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:11:55,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:55,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:11:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2021-10-29 04:11:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-10-29 04:11:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:11:55,446 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:55,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:11:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2021-10-29 04:11:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2021-10-29 04:11:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 04:11:55,739 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:55,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:11:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 36 states and 50 transitions. [2021-10-29 04:11:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2021-10-29 04:11:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:11:56,046 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:56,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:11:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 43 states and 66 transitions. [2021-10-29 04:11:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2021-10-29 04:11:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-29 04:11:56,849 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:56,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 04:11:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 45 states and 69 transitions. [2021-10-29 04:11:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2021-10-29 04:11:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-29 04:11:57,408 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:57,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 04:11:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 45 states and 66 transitions. [2021-10-29 04:11:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2021-10-29 04:11:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 04:11:58,400 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:58,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 04:11:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:11:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 57 states and 95 transitions. [2021-10-29 04:11:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 95 transitions. [2021-10-29 04:11:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-29 04:11:59,923 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:11:59,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:11:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:11:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-29 04:12:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:12:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 57 states and 94 transitions. [2021-10-29 04:12:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 94 transitions. [2021-10-29 04:12:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-29 04:12:00,176 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:12:00,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:12:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:12:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-29 04:12:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:12:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 57 states and 93 transitions. [2021-10-29 04:12:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 93 transitions. [2021-10-29 04:12:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-29 04:12:00,436 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:12:00,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:12:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:12:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 46 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-29 04:12:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:12:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 60 states and 96 transitions. [2021-10-29 04:12:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 96 transitions. [2021-10-29 04:12:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-29 04:12:03,065 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:12:03,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:12:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:12:03,090 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:12:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:12:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:12:03,183 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:12:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:12:03,224 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2021-10-29 04:12:03,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 04:12:03 ImpRootNode [2021-10-29 04:12:03,284 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 04:12:03,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:12:03,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:12:03,285 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:12:03,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:54" (3/4) ... [2021-10-29 04:12:03,288 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:12:03,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 04:12:03,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:12:03,404 INFO L168 Benchmark]: Toolchain (without parser) took 9060.07 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 62.3 MB in the beginning and 111.2 MB in the end (delta: -48.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:12:03,405 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 48.4 MB in the beginning and 48.4 MB in the end (delta: 49.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:12:03,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 94.4 MB. Free memory was 62.1 MB in the beginning and 69.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:12:03,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.58 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:12:03,408 INFO L168 Benchmark]: Boogie Preprocessor took 16.39 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 67.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:12:03,409 INFO L168 Benchmark]: RCFGBuilder took 295.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 57.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:12:03,410 INFO L168 Benchmark]: CodeCheck took 8324.90 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 57.1 MB in the beginning and 115.4 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:12:03,426 INFO L168 Benchmark]: Witness Printer took 117.34 ms. Allocated memory is still 148.9 MB. Free memory was 115.4 MB in the beginning and 111.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:12:03,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15556 SDtfs, 5644 SDslu, 7136 SDs, 0 SdLazy, 33738 SolverSat, 11534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3212 GetRequests, 2991 SyntacticMatches, 64 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9175 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 635 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 224/281 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: 41]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] int x = 4; [L39] CALL, EXPR fibo1(x) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) [L39] int result = fibo1(x); [L40] COND TRUE result == 3 [L41] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory was 48.4 MB in the beginning and 48.4 MB in the end (delta: 49.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 94.4 MB. Free memory was 62.1 MB in the beginning and 69.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.58 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.39 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 67.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.38 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 57.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 8324.90 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 57.1 MB in the beginning and 115.4 MB in the end (delta: -58.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 117.34 ms. Allocated memory is still 148.9 MB. Free memory was 115.4 MB in the beginning and 111.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:12:03,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b7ad57-8075-4520-9da8-3a3d063e8f1f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...