./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB --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 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:40:46,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:40:46,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:40:46,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:40:46,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:40:46,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:40:46,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:40:46,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:40:46,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:40:46,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:40:46,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:40:46,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:40:46,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:40:46,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:40:46,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:40:46,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:40:46,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:40:46,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:40:46,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:40:46,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:40:46,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:40:46,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:40:46,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:40:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:40:46,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:40:46,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:40:46,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:40:46,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:40:46,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:40:46,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:40:46,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:40:46,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:40:46,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:40:46,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:40:46,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:40:46,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:40:46,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:40:46,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:40:46,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:40:46,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:40:46,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:40:46,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:40:46,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:40:46,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:40:46,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:40:46,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:40:46,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:40:46,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:40:46,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:40:46,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:40:46,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:40:46,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:40:46,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:40:46,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:40:46,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:40:46,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:40:46,672 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:40:46,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:40:46,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:40:46,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:40:46,673 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:40:46,673 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:40:46,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:40:46,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:40:46,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:40:46,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:40:46,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:40:46,675 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:40:46,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:40:46,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:40:46,677 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_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 [2022-10-17 16:40:46,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:40:47,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:40:47,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:40:47,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:40:47,033 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:40:47,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2022-10-17 16:40:47,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/data/546313988/6675c6c58b384235a43c35d30e0ee35e/FLAG21590b86f [2022-10-17 16:40:47,552 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:40:47,552 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2022-10-17 16:40:47,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/data/546313988/6675c6c58b384235a43c35d30e0ee35e/FLAG21590b86f [2022-10-17 16:40:47,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/data/546313988/6675c6c58b384235a43c35d30e0ee35e [2022-10-17 16:40:47,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:40:47,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:40:47,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:40:47,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:40:47,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:40:47,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:40:47" (1/1) ... [2022-10-17 16:40:47,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abb4204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:47, skipping insertion in model container [2022-10-17 16:40:47,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:40:47" (1/1) ... [2022-10-17 16:40:47,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:40:47,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:40:48,199 WARN L230 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_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c[946,959] [2022-10-17 16:40:48,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:40:48,212 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:40:48,233 WARN L230 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_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c[946,959] [2022-10-17 16:40:48,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:40:48,251 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:40:48,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48 WrapperNode [2022-10-17 16:40:48,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:40:48,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:40:48,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:40:48,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:40:48,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,286 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-17 16:40:48,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:40:48,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:40:48,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:40:48,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:40:48,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:40:48,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:40:48,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:40:48,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:40:48,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:40:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:40:48,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:40:48,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:40:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:40:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:40:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-17 16:40:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-17 16:40:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-17 16:40:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-17 16:40:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:40:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:40:48,485 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:40:48,487 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:40:48,631 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:40:48,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:40:48,648 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:40:48,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:48 BoogieIcfgContainer [2022-10-17 16:40:48,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:40:48,667 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:40:48,667 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:40:48,677 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:40:48,677 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:48" (1/1) ... [2022-10-17 16:40:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:40:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2022-10-17 16:40:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-10-17 16:40:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:40:48,803 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:40:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:40:49,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 28 states and 37 transitions. [2022-10-17 16:40:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-10-17 16:40:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:40:49,166 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:40:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:40:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 36 transitions. [2022-10-17 16:40:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-10-17 16:40:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 16:40:49,317 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:40:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 16:40:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 33 states and 48 transitions. [2022-10-17 16:40:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2022-10-17 16:40:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 16:40:49,733 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:49,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:40:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:49,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:40:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:49,893 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-10-17 16:40:49,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:40:49 ImpRootNode [2022-10-17 16:40:49,924 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:40:49,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:40:49,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:40:49,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:40:49,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:48" (3/4) ... [2022-10-17 16:40:49,927 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:40:49,967 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:40:49,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:40:49,968 INFO L158 Benchmark]: Toolchain (without parser) took 2015.12ms. Allocated memory is still 138.4MB. Free memory was 100.6MB in the beginning and 108.3MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:40:49,969 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:40:49,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.35ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 112.2MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:40:49,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.13ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 110.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:40:49,970 INFO L158 Benchmark]: Boogie Preprocessor took 39.68ms. Allocated memory is still 138.4MB. Free memory was 110.5MB in the beginning and 109.5MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 16:40:49,971 INFO L158 Benchmark]: RCFGBuilder took 337.39ms. Allocated memory is still 138.4MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 16:40:49,972 INFO L158 Benchmark]: CodeCheck took 1257.20ms. Allocated memory is still 138.4MB. Free memory was 99.0MB in the beginning and 110.5MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:40:49,972 INFO L158 Benchmark]: Witness Printer took 43.10ms. Allocated memory is still 138.4MB. Free memory was 110.5MB in the beginning and 108.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:40:49,975 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 51 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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 = 2; VAL [x=2] [L39] CALL, EXPR fibo1(x) 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); [L39] RET, EXPR fibo1(x) VAL [fibo1(x)=1, x=2] [L39] int result = fibo1(x); [L40] COND TRUE result == 1 VAL [result=1, x=2] [L41] reach_error() VAL [result=1, x=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.35ms. Allocated memory is still 138.4MB. Free memory was 100.4MB in the beginning and 112.2MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.13ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 110.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.68ms. Allocated memory is still 138.4MB. Free memory was 110.5MB in the beginning and 109.5MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 337.39ms. Allocated memory is still 138.4MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1257.20ms. Allocated memory is still 138.4MB. Free memory was 99.0MB in the beginning and 110.5MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.10ms. Allocated memory is still 138.4MB. Free memory was 110.5MB in the beginning and 108.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 16:40:50,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8888f5-cfa3-45e5-9d6d-a87f19c829e2/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE