./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.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_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/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_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/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_02c52dae-5a17-47cf-83e9-db95fc9a8d98/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_02c52dae-5a17-47cf-83e9-db95fc9a8d98/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 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:04:03,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:04:03,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:04:03,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:04:03,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:04:03,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:04:03,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:04:03,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:04:03,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:04:03,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:04:03,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:04:03,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:04:03,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:04:03,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:04:03,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:04:03,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:04:03,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:04:03,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:04:03,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:04:03,468 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:04:03,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:04:03,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:04:03,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:04:03,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:04:03,472 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:04:03,472 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:04:03,473 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:04:03,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:04:03,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:04:03,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:04:03,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:04:03,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:04:03,477 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:04:03,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:04:03,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:04:03,479 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_02c52dae-5a17-47cf-83e9-db95fc9a8d98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 [2023-11-23 20:04:03,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:04:03,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:04:03,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:04:03,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:04:03,899 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:04:03,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2023-11-23 20:04:07,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:04:08,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:04:08,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2023-11-23 20:04:08,091 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/data/2667ed084/31388616a2cd4582906c232d3ca60fe3/FLAG85cfe13ef [2023-11-23 20:04:08,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/data/2667ed084/31388616a2cd4582906c232d3ca60fe3 [2023-11-23 20:04:08,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:04:08,126 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:04:08,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:08,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:04:08,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:04:08,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4c1129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08, skipping insertion in model container [2023-11-23 20:04:08,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:04:08,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:08,444 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:04:08,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:08,487 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:04:08,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08 WrapperNode [2023-11-23 20:04:08,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:08,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:08,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:04:08,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:04:08,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,533 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-23 20:04:08,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:08,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:04:08,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:04:08,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:04:08,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:04:08,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:04:08,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:04:08,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:04:08,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:04:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:04:08,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:04:08,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:04:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-23 20:04:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-23 20:04:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-23 20:04:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-23 20:04:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:04:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:04:08,777 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:04:08,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:04:09,022 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:04:09,089 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:04:09,090 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:04:09,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:09 BoogieIcfgContainer [2023-11-23 20:04:09,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:04:09,093 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:04:09,093 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:04:09,102 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:04:09,102 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:04:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 46 states and 52 transitions. [2023-11-23 20:04:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-11-23 20:04:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:04:09,175 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:09,514 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 20:04:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 58 transitions. [2023-11-23 20:04:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-23 20:04:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:04:09,652 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:09,722 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 20:04:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 51 states and 59 transitions. [2023-11-23 20:04:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-23 20:04:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:04:09,748 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:09,860 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 20:04:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 58 transitions. [2023-11-23 20:04:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-23 20:04:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:04:09,909 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,065 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 20:04:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 54 states and 64 transitions. [2023-11-23 20:04:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-11-23 20:04:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:04:10,250 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,377 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 20:04:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 56 states and 66 transitions. [2023-11-23 20:04:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2023-11-23 20:04:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:04:10,402 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,516 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 20:04:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 57 states and 67 transitions. [2023-11-23 20:04:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-23 20:04:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 20:04:10,539 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,748 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 20:04:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 59 states and 72 transitions. [2023-11-23 20:04:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2023-11-23 20:04:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:04:10,977 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:11,108 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 20:04:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 28 states and 29 transitions. [2023-11-23 20:04:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-23 20:04:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:04:11,163 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:11,401 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 20:04:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 32 states and 33 transitions. [2023-11-23 20:04:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-11-23 20:04:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:04:12,158 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:12,221 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 20:04:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 33 states and 34 transitions. [2023-11-23 20:04:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-23 20:04:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:04:12,255 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:12,354 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 20:04:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 32 states and 33 transitions. [2023-11-23 20:04:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-11-23 20:04:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:04:12,755 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:12,838 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 20:04:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 31 states and 32 transitions. [2023-11-23 20:04:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-23 20:04:12,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:04:12,871 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 13 iterations. [2023-11-23 20:04:12,886 INFO L751 CodeCheckObserver]: All specifications hold 12 specifications checked. All of them hold [2023-11-23 20:04:13,022 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:04:13,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:04:13 ImpRootNode [2023-11-23 20:04:13,028 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:04:13,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:04:13,030 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:04:13,031 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:04:13,032 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:09" (3/4) ... [2023-11-23 20:04:13,038 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:04:13,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-23 20:04:13,043 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-23 20:04:13,058 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-23 20:04:13,058 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 20:04:13,059 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 20:04:13,059 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:04:13,219 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:04:13,220 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 20:04:13,220 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:04:13,221 INFO L158 Benchmark]: Toolchain (without parser) took 5095.16ms. Allocated memory is still 151.0MB. Free memory was 106.3MB in the beginning and 65.9MB in the end (delta: 40.4MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,222 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:13,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.02ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 95.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.10ms. Allocated memory is still 151.0MB. Free memory was 95.9MB in the beginning and 94.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,225 INFO L158 Benchmark]: Boogie Preprocessor took 46.43ms. Allocated memory is still 151.0MB. Free memory was 94.6MB in the beginning and 93.7MB in the end (delta: 808.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:13,226 INFO L158 Benchmark]: RCFGBuilder took 509.26ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 119.6MB in the end (delta: -26.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,226 INFO L158 Benchmark]: CodeCheck took 3935.68ms. Allocated memory is still 151.0MB. Free memory was 119.6MB in the beginning and 70.0MB in the end (delta: 49.6MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,227 INFO L158 Benchmark]: Witness Printer took 191.20ms. Allocated memory is still 151.0MB. Free memory was 70.0MB in the beginning and 65.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:13,229 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: 3.8s, 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, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s 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 0.35ms. Allocated memory is still 117.4MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.02ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 95.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.10ms. Allocated memory is still 151.0MB. Free memory was 95.9MB in the beginning and 94.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.43ms. Allocated memory is still 151.0MB. Free memory was 94.6MB in the beginning and 93.7MB in the end (delta: 808.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 509.26ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 119.6MB in the end (delta: -26.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * CodeCheck took 3935.68ms. Allocated memory is still 151.0MB. Free memory was 119.6MB in the beginning and 70.0MB in the end (delta: 49.6MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * Witness Printer took 191.20ms. Allocated memory is still 151.0MB. Free memory was 70.0MB in the beginning and 65.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 20:04:13,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c52dae-5a17-47cf-83e9-db95fc9a8d98/bin/ukojak-verify-1t5iHCbJaC/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 Result: TRUE