./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/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_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18afe523baca40cb7d279a05e0d0a8c37efda6f4bcc6a4be698eb3701f39ab37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 04:00:10,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 04:00:10,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 04:00:10,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 04:00:10,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 04:00:10,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 04:00:10,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 04:00:10,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 04:00:10,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 04:00:10,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 04:00:10,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 04:00:10,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 04:00:10,579 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 04:00:10,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 04:00:10,580 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 04:00:10,580 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 04:00:10,580 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 04:00:10,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 04:00:10,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 04:00:10,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 04:00:10,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 04:00:10,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 04:00:10,581 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 04:00:10,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 04:00:10,581 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_302b531e-996d-4ead-9c18-3364b5f81330/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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18afe523baca40cb7d279a05e0d0a8c37efda6f4bcc6a4be698eb3701f39ab37 [2024-12-06 04:00:10,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 04:00:10,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 04:00:10,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 04:00:10,846 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 04:00:10,847 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 04:00:10,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2024-12-06 04:00:13,566 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/data/8777c8d74/a938e1e919d3405a8ad9e90ce72878ef/FLAGc9005be08 [2024-12-06 04:00:13,783 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 04:00:13,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2024-12-06 04:00:13,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/data/8777c8d74/a938e1e919d3405a8ad9e90ce72878ef/FLAGc9005be08 [2024-12-06 04:00:14,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/data/8777c8d74/a938e1e919d3405a8ad9e90ce72878ef [2024-12-06 04:00:14,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 04:00:14,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 04:00:14,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 04:00:14,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 04:00:14,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 04:00:14,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7f9f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14, skipping insertion in model container [2024-12-06 04:00:14,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 04:00:14,283 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2024-12-06 04:00:14,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 04:00:14,297 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 04:00:14,310 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2024-12-06 04:00:14,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 04:00:14,323 INFO L204 MainTranslator]: Completed translation [2024-12-06 04:00:14,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14 WrapperNode [2024-12-06 04:00:14,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 04:00:14,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 04:00:14,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 04:00:14,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 04:00:14,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,346 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-12-06 04:00:14,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 04:00:14,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 04:00:14,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 04:00:14,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 04:00:14,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 04:00:14,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 04:00:14,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 04:00:14,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 04:00:14,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 04:00:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 04:00:14,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 04:00:14,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 04:00:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 04:00:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 04:00:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 04:00:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 04:00:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-12-06 04:00:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-12-06 04:00:14,455 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 04:00:14,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 04:00:14,537 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-12-06 04:00:14,537 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 04:00:14,564 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 04:00:14,564 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 04:00:14,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:00:14 BoogieIcfgContainer [2024-12-06 04:00:14,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 04:00:14,565 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 04:00:14,565 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 04:00:14,573 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 04:00:14,573 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:00:14" (1/1) ... [2024-12-06 04:00:14,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 04:00:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:00:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2024-12-06 04:00:14,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-12-06 04:00:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 04:00:14,630 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:00:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:00:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:00:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:00:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:00:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-12-06 04:00:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-12-06 04:00:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-06 04:00:14,935 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:00:14,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:00:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:00:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 04:00:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:00:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2024-12-06 04:00:15,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-12-06 04:00:15,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-06 04:00:15,360 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:00:15,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:00:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:00:15,392 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 04:00:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:00:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:00:15,461 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 04:00:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:00:15,482 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2024-12-06 04:00:15,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 04:00:15 ImpRootNode [2024-12-06 04:00:15,503 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 04:00:15,504 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 04:00:15,504 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 04:00:15,504 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 04:00:15,504 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:00:14" (3/4) ... [2024-12-06 04:00:15,505 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 04:00:15,535 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 13. [2024-12-06 04:00:15,575 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 04:00:15,575 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 04:00:15,575 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 04:00:15,576 INFO L158 Benchmark]: Toolchain (without parser) took 1431.14ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 106.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-12-06 04:00:15,576 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:00:15,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.94ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 107.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 04:00:15,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.94ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:00:15,577 INFO L158 Benchmark]: Boogie Preprocessor took 12.92ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 105.4MB in the end (delta: 586.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:00:15,577 INFO L158 Benchmark]: RCFGBuilder took 204.14ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 04:00:15,577 INFO L158 Benchmark]: CodeCheck took 937.95ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 111.2MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:00:15,578 INFO L158 Benchmark]: Witness Printer took 71.23ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 106.9MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 04:00:15,580 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 26 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL, EXPR id(input) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=1, x=1] [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; VAL [\old(x)=1, \result=1, x=1] [L8] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=2, x=2] [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; VAL [\old(x)=2, \result=2, x=2] [L15] RET, EXPR id(input) VAL [input=2] [L15] int result = id(input); [L16] COND TRUE result == 2 VAL [input=2] [L17] reach_error() VAL [input=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.94ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 107.0MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.94ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.92ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 105.4MB in the end (delta: 586.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 204.14ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 937.95ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 111.2MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.23ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 106.9MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 04:00:15,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302b531e-996d-4ead-9c18-3364b5f81330/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE