./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/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_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk --witnessprinter.witness.filename witness --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 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:57:56,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:57:56,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 22:57:56,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 22:57:56,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 22:57:56,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:57:56,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 22:57:56,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 22:57:56,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:57:56,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:57:56,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:57:56,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:57:56,963 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 22:57:56,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 22:57:56,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 22:57:56,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:57:56,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:57:56,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:57:56,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:57:56,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:57:56,972 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 22:57:56,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:57:56,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:57:56,977 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:57:56,977 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:57:56,978 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:57:56,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:57:56,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:57:56,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:57:56,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:57:56,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 22:57:56,985 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 22:57:57,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 22:57:57,007 INFO L153 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_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2024-11-08 22:57:57,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:57:57,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:57:57,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:57:57,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:57:57,432 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:57:57,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c Unable to find full path for "g++" [2024-11-08 22:57:59,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:58:00,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:58:00,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-08 22:58:00,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/data/90c941351/1f77bd2d8f8640cda1a3317334fc9a45/FLAGb1d2dc111 [2024-11-08 22:58:00,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/data/90c941351/1f77bd2d8f8640cda1a3317334fc9a45 [2024-11-08 22:58:00,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:58:00,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:58:00,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:58:00,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:58:00,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:58:00,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6569ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00, skipping insertion in model container [2024-11-08 22:58:00,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:58:00,297 WARN L250 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_5961fa29-dd21-4832-8585-60f7263692f1/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2024-11-08 22:58:00,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:58:00,312 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:58:00,326 WARN L250 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_5961fa29-dd21-4832-8585-60f7263692f1/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2024-11-08 22:58:00,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:58:00,345 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:58:00,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00 WrapperNode [2024-11-08 22:58:00,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:58:00,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:58:00,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:58:00,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:58:00,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,376 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-08 22:58:00,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:58:00,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:58:00,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:58:00,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:58:00,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:58:00,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:58:00,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:58:00,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:58:00,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:58:00,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:58:00,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:58:00,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:58:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:58:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 22:58:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-08 22:58:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-08 22:58:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-08 22:58:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-08 22:58:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:58:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:58:00,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:58:00,541 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:58:00,671 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 22:58:00,672 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:58:00,705 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:58:00,705 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 22:58:00,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:58:00 BoogieIcfgContainer [2024-11-08 22:58:00,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:58:00,707 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:58:00,707 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:58:00,719 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:58:00,719 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:58:00" (1/1) ... [2024-11-08 22:58:00,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:58:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-08 22:58:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-08 22:58:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 22:58:00,801 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:58:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-08 22:58:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-08 22:58:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 22:58:01,286 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:58:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2024-11-08 22:58:01,750 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-08 22:58:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 22:58:01,752 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:01,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 22:58:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 36 states and 50 transitions. [2024-11-08 22:58:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-11-08 22:58:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 22:58:02,168 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 22:58:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 43 states and 66 transitions. [2024-11-08 22:58:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2024-11-08 22:58:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 22:58:03,267 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 22:58:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 45 states and 69 transitions. [2024-11-08 22:58:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2024-11-08 22:58:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 22:58:03,964 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 22:58:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 45 states and 66 transitions. [2024-11-08 22:58:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-11-08 22:58:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 22:58:05,180 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 22:58:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 57 states and 95 transitions. [2024-11-08 22:58:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 95 transitions. [2024-11-08 22:58:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 22:58:07,102 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 22:58:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 57 states and 94 transitions. [2024-11-08 22:58:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 94 transitions. [2024-11-08 22:58:07,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 22:58:07,515 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:58:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 22:58:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:58:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 57 states and 93 transitions. [2024-11-08 22:58:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 93 transitions. [2024-11-08 22:58:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 22:58:07,889 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:58:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:58:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:58:07,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:58:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:58:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:58:07,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:58:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:58:08,074 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2024-11-08 22:58:08,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:58:08 ImpRootNode [2024-11-08 22:58:08,129 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:58:08,130 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:58:08,130 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:58:08,130 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:58:08,131 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:58:00" (3/4) ... [2024-11-08 22:58:08,132 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 22:58:08,213 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 22:58:08,213 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:58:08,214 INFO L158 Benchmark]: Toolchain (without parser) took 8140.39ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 115.5MB in the beginning and 88.9MB in the end (delta: 26.6MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,214 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 153.1MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:58:08,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.57ms. Allocated memory is still 153.1MB. Free memory was 115.2MB in the beginning and 102.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.06ms. Allocated memory is still 153.1MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,215 INFO L158 Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 153.1MB. Free memory was 101.2MB in the beginning and 100.6MB in the end (delta: 666.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:58:08,220 INFO L158 Benchmark]: RCFGBuilder took 307.84ms. Allocated memory is still 153.1MB. Free memory was 100.1MB in the beginning and 89.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,220 INFO L158 Benchmark]: CodeCheck took 7422.11ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 88.7MB in the beginning and 92.0MB in the end (delta: -3.4MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,221 INFO L158 Benchmark]: Witness Printer took 83.53ms. Allocated memory is still 195.0MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:58:08,223 INFO L338 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: 7.3s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 769 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 269 mSDsluCounter, 706 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 479 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1613 IncrementalHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 479 mSolverCounterUnsat, 402 mSDtfsCounter, 1613 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2629 GetRequests, 2466 SyntacticMatches, 49 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4126 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 108/149 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; VAL [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] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, 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] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, 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] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, 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] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, 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] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [x=4] [L39] int result = fibo1(x); [L40] COND TRUE result == 3 VAL [x=4] [L41] reach_error() VAL [x=4] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 153.1MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.57ms. Allocated memory is still 153.1MB. Free memory was 115.2MB in the beginning and 102.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.06ms. Allocated memory is still 153.1MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.95ms. Allocated memory is still 153.1MB. Free memory was 101.2MB in the beginning and 100.6MB in the end (delta: 666.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 307.84ms. Allocated memory is still 153.1MB. Free memory was 100.1MB in the beginning and 89.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 7422.11ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 88.7MB in the beginning and 92.0MB in the end (delta: -3.4MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Witness Printer took 83.53ms. Allocated memory is still 195.0MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 22:58:08,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5961fa29-dd21-4832-8585-60f7263692f1/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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