./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:25:30,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:25:30,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:25:30,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:25:30,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:25:30,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:25:30,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:25:30,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:25:30,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:25:30,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:25:30,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:25:30,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:25:30,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:25:30,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:25:30,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:25:30,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:25:30,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:25:30,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:25:30,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:25:30,963 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:25:30,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:25:30,965 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:25:30,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:25:30,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:25:30,967 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:25:30,968 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:25:30,969 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:25:30,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:25:30,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:30,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:25:30,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:25:30,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:25:30,973 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:25:30,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:25:30,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:25:30,975 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_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6597d5a31aa324ba443314d2c363b302cd71d697c12811ade53ae3225a095206 [2023-11-23 20:25:31,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:25:31,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:25:31,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:25:31,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:25:31,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:25:31,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2023-11-23 20:25:34,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:25:35,098 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:25:35,098 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2023-11-23 20:25:35,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/data/d6d135774/7e83f3473e234d0fbb4f9503983e6d1e/FLAG450c0725c [2023-11-23 20:25:35,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/data/d6d135774/7e83f3473e234d0fbb4f9503983e6d1e [2023-11-23 20:25:35,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:25:35,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:25:35,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:35,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:25:35,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:25:35,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f07f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35, skipping insertion in model container [2023-11-23 20:25:35,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:25:35,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:35,382 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:25:35,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:35,419 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:25:35,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35 WrapperNode [2023-11-23 20:25:35,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:35,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:35,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:25:35,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:25:35,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,459 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-23 20:25:35,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:35,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:25:35,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:25:35,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:25:35,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:25:35,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:25:35,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:25:35,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:25:35,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:35" (1/1) ... [2023-11-23 20:25:35,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:35,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:25:35,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:25:35,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:25:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:25:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:25:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-23 20:25:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-23 20:25:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-23 20:25:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-23 20:25:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:25:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:25:35,683 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:25:35,686 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:25:35,999 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:25:36,051 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:25:36,058 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:25:36,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:36 BoogieIcfgContainer [2023-11-23 20:25:36,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:25:36,061 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:25:36,062 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:25:36,072 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:25:36,072 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:36" (1/1) ... [2023-11-23 20:25:36,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:25:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 46 states and 52 transitions. [2023-11-23 20:25:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-11-23 20:25:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:25:36,147 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 58 transitions. [2023-11-23 20:25:36,514 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-23 20:25:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:25:36,515 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:36,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 51 states and 59 transitions. [2023-11-23 20:25:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-23 20:25:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:25:36,645 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 58 transitions. [2023-11-23 20:25:36,759 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-23 20:25:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:25:36,760 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 54 states and 64 transitions. [2023-11-23 20:25:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-11-23 20:25:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:25:37,122 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 56 states and 66 transitions. [2023-11-23 20:25:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2023-11-23 20:25:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:25:37,256 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:37,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 57 states and 67 transitions. [2023-11-23 20:25:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-23 20:25:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:25:37,363 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 59 states and 72 transitions. [2023-11-23 20:25:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2023-11-23 20:25:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:25:37,688 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:25:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 28 states and 29 transitions. [2023-11-23 20:25:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-23 20:25:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:25:37,809 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:25:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 32 states and 33 transitions. [2023-11-23 20:25:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-11-23 20:25:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:25:38,667 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:25:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 33 states and 34 transitions. [2023-11-23 20:25:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-23 20:25:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:25:38,820 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:38,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:25:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 32 states and 33 transitions. [2023-11-23 20:25:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-11-23 20:25:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:25:39,258 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:25:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 20:25:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 31 states and 32 transitions. [2023-11-23 20:25:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-23 20:25:39,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:25:39,348 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 13 iterations. [2023-11-23 20:25:39,360 INFO L751 CodeCheckObserver]: All specifications hold 12 specifications checked. All of them hold [2023-11-23 20:25:39,481 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:25:39,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:25:39 ImpRootNode [2023-11-23 20:25:39,488 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:25:39,489 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:25:39,489 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:25:39,490 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:25:39,490 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:36" (3/4) ... [2023-11-23 20:25:39,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:25:39,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-23 20:25:39,497 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-23 20:25:39,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-23 20:25:39,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 20:25:39,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 20:25:39,505 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:25:39,628 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:25:39,628 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 20:25:39,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:25:39,630 INFO L158 Benchmark]: Toolchain (without parser) took 4497.74ms. Allocated memory is still 199.2MB. Free memory was 162.4MB in the beginning and 91.9MB in the end (delta: 70.5MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,630 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:39,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.17ms. Allocated memory is still 199.2MB. Free memory was 162.4MB in the beginning and 152.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.09ms. Allocated memory is still 199.2MB. Free memory was 152.1MB in the beginning and 150.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,632 INFO L158 Benchmark]: Boogie Preprocessor took 27.06ms. Allocated memory is still 199.2MB. Free memory was 150.9MB in the beginning and 150.0MB in the end (delta: 946.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:39,632 INFO L158 Benchmark]: RCFGBuilder took 571.78ms. Allocated memory is still 199.2MB. Free memory was 150.0MB in the beginning and 136.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,633 INFO L158 Benchmark]: CodeCheck took 3427.23ms. Allocated memory is still 199.2MB. Free memory was 136.9MB in the beginning and 96.1MB in the end (delta: 40.8MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,633 INFO L158 Benchmark]: Witness Printer took 139.63ms. Allocated memory is still 199.2MB. Free memory was 96.1MB in the beginning and 91.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:25:39,636 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, 46 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 576 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1193 IncrementalHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 196 mSDtfsCounter, 1193 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1543 GetRequests, 1483 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 19/23 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 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.17ms. Allocated memory is still 199.2MB. Free memory was 162.4MB in the beginning and 152.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.09ms. Allocated memory is still 199.2MB. Free memory was 152.1MB in the beginning and 150.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.06ms. Allocated memory is still 199.2MB. Free memory was 150.9MB in the beginning and 150.0MB in the end (delta: 946.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 571.78ms. Allocated memory is still 199.2MB. Free memory was 150.0MB in the beginning and 136.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 3427.23ms. Allocated memory is still 199.2MB. Free memory was 136.9MB in the beginning and 96.1MB in the end (delta: 40.8MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. * Witness Printer took 139.63ms. Allocated memory is still 199.2MB. Free memory was 96.1MB in the beginning and 91.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 20:25:39,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16ebf690-ec28-4cd1-be6d-2a8d79437dc0/bin/ukojak-verify-1t5iHCbJaC/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 Result: TRUE