./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b --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 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 22:20:17,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 22:20:17,232 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-32bit-Kojak_Default.epf [2024-12-05 22:20:17,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 22:20:17,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 22:20:17,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 22:20:17,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 22:20:17,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 22:20:17,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 22:20:17,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 22:20:17,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-05 22:20:17,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 22:20:17,260 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 22:20:17,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 22:20:17,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:20:17,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 22:20:17,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 22:20:17,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 22:20:17,261 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 22:20:17,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 22:20:17,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b 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 -> 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d [2024-12-05 22:20:17,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 22:20:17,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 22:20:17,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 22:20:17,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 22:20:17,509 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 22:20:17,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2024-12-05 22:20:20,158 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/data/19079ce08/87a2c071dd7640fb8e97587cd5991b62/FLAG2c62f0052 [2024-12-05 22:20:20,355 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 22:20:20,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2024-12-05 22:20:20,362 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/data/19079ce08/87a2c071dd7640fb8e97587cd5991b62/FLAG2c62f0052 [2024-12-05 22:20:20,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/data/19079ce08/87a2c071dd7640fb8e97587cd5991b62 [2024-12-05 22:20:20,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 22:20:20,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 22:20:20,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 22:20:20,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 22:20:20,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 22:20:20,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2a7b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20, skipping insertion in model container [2024-12-05 22:20:20,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,397 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 22:20:20,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:20:20,516 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 22:20:20,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:20:20,538 INFO L204 MainTranslator]: Completed translation [2024-12-05 22:20:20,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20 WrapperNode [2024-12-05 22:20:20,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 22:20:20,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 22:20:20,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 22:20:20,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 22:20:20,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,562 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2024-12-05 22:20:20,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 22:20:20,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 22:20:20,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 22:20:20,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 22:20:20,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,570 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 22:20:20,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 22:20:20,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 22:20:20,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 22:20:20,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:20:20,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 22:20:20,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 22:20:20,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 22:20:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-12-05 22:20:20,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-12-05 22:20:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 22:20:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-12-05 22:20:20,632 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-12-05 22:20:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 22:20:20,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 22:20:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 22:20:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-12-05 22:20:20,632 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-12-05 22:20:20,683 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 22:20:20,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 22:20:20,783 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-12-05 22:20:20,783 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 22:20:20,802 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 22:20:20,802 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-05 22:20:20,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:20:20 BoogieIcfgContainer [2024-12-05 22:20:20,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 22:20:20,804 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 22:20:20,804 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 22:20:20,813 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 22:20:20,813 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:20:20" (1/1) ... [2024-12-05 22:20:20,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 22:20:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2024-12-05 22:20:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-12-05 22:20:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 22:20:20,874 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:20:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:20:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:20:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:20:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2024-12-05 22:20:21,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-12-05 22:20:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 22:20:21,046 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:20:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:20:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:20:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:20:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 31 states and 35 transitions. [2024-12-05 22:20:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-12-05 22:20:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 22:20:21,225 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:20:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:20:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:20:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:20:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 30 states and 34 transitions. [2024-12-05 22:20:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-12-05 22:20:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 22:20:21,307 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:20:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:20:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:20:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:20:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 35 states and 40 transitions. [2024-12-05 22:20:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-12-05 22:20:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 22:20:21,582 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:20:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:20:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:20:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:20:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:20:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 24 states and 27 transitions. [2024-12-05 22:20:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-12-05 22:20:21,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-05 22:20:21,830 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2024-12-05 22:20:21,837 INFO L726 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2024-12-05 22:20:21,871 INFO L77 FloydHoareUtils]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2024-12-05 22:20:21,871 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line 3) the Hoare annotation is: true [2024-12-05 22:20:21,871 INFO L77 FloydHoareUtils]: At program point fFINAL(lines 8 13) the Hoare annotation is: true [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L12(line 12) the Hoare annotation is: true [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L11(line 11) the Hoare annotation is: (<= f_~n 3) [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L10(line 10) the Hoare annotation is: (and (<= 3 |f_#t~post6|) (<= |f_#t~post6| 4)) [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L11-1(lines 8 13) the Hoare annotation is: true [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 8 13) the Hoare annotation is: (<= |f_#in~n| 4) [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L9(line 9) the Hoare annotation is: (<= f_~n 4) [2024-12-05 22:20:21,872 INFO L77 FloydHoareUtils]: At program point L10-1(line 10) the Hoare annotation is: (<= |f_#t~post6| 4) [2024-12-05 22:20:21,873 INFO L75 FloydHoareUtils]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point fEXIT(lines 8 13) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L75 FloydHoareUtils]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point L23(line 23) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point L23-1(lines 22 24) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point L19(line 19) the Hoare annotation is: true [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point L18(line 18) the Hoare annotation is: (<= f2_~n 2) [2024-12-05 22:20:21,873 INFO L77 FloydHoareUtils]: At program point L17(line 17) the Hoare annotation is: (and (<= |f2_#t~post7| 3) (<= 3 |f2_#t~post7|)) [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point L18-1(lines 15 20) the Hoare annotation is: true [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point L16(line 16) the Hoare annotation is: (<= f2_~n 3) [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point L17-1(line 17) the Hoare annotation is: (<= |f2_#t~post7| 3) [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point f2EXIT(lines 15 20) the Hoare annotation is: true [2024-12-05 22:20:21,874 INFO L75 FloydHoareUtils]: For program point f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point f2FINAL(lines 15 20) the Hoare annotation is: true [2024-12-05 22:20:21,874 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: (<= |f2_#in~n| 3) [2024-12-05 22:20:21,874 INFO L75 FloydHoareUtils]: For program point f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2024-12-05 22:20:21,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 10:20:21 ImpRootNode [2024-12-05 22:20:21,890 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 22:20:21,890 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 22:20:21,891 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 22:20:21,891 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 22:20:21,891 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:20:20" (3/4) ... [2024-12-05 22:20:21,893 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-05 22:20:21,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2024-12-05 22:20:21,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2024-12-05 22:20:21,897 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-12-05 22:20:21,900 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-05 22:20:21,900 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-05 22:20:21,900 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-05 22:20:21,900 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-05 22:20:21,966 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 22:20:21,966 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 22:20:21,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 22:20:21,967 INFO L158 Benchmark]: Toolchain (without parser) took 1588.28ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 94.3MB in the end (delta: 23.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-12-05 22:20:21,967 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:20:21,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.27ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 107.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 22:20:21,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.84ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 106.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:20:21,968 INFO L158 Benchmark]: Boogie Preprocessor took 11.14ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 105.7MB in the end (delta: 438.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:20:21,968 INFO L158 Benchmark]: RCFGBuilder took 228.44ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 95.1MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 22:20:21,969 INFO L158 Benchmark]: CodeCheck took 1086.25ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 99.2MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:20:21,969 INFO L158 Benchmark]: Witness Printer took 75.97ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 94.3MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:20:21,971 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 4 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 94 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 55 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 305 SyntacticMatches, 15 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 97 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - ProcedureContractResult [Line: 8]: Procedure Contract for f Derived contract for procedure f. Requires: (n <= 4) - ProcedureContractResult [Line: 15]: Procedure Contract for f2 Derived contract for procedure f2. Requires: (n <= 3) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.27ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 107.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.84ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 106.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.14ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 105.7MB in the end (delta: 438.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.44ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 95.1MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1086.25ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 99.2MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.97ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 94.3MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2024-12-05 22:20:21,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd572c0-3bb8-471d-92f8-8af1d25336a7/bin/ukojak-verify-CZk0znPC7b/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