./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.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_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/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_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/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_151be4df-9277-45f2-8b14-4c839ad7c74f/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 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 03:58:11,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 03:58:11,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 03:58:11,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 03:58:11,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 03:58:11,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 03:58:11,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 03:58:11,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 03:58:11,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 03:58:11,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 03:58:11,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 03:58:11,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 03:58:11,300 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 03:58:11,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 03:58:11,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:58:11,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 03:58:11,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 03:58:11,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 03:58:11,301 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 03:58:11,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 03:58:11,301 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_151be4df-9277-45f2-8b14-4c839ad7c74f/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 -> 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 [2024-12-06 03:58:11,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 03:58:11,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 03:58:11,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 03:58:11,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 03:58:11,517 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 03:58:11,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2024-12-06 03:58:14,140 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/data/7c8f5ff84/f1c454de7e72439d9cee565552d8bd1d/FLAG49af2ac75 [2024-12-06 03:58:14,335 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 03:58:14,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2024-12-06 03:58:14,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/data/7c8f5ff84/f1c454de7e72439d9cee565552d8bd1d/FLAG49af2ac75 [2024-12-06 03:58:14,353 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/data/7c8f5ff84/f1c454de7e72439d9cee565552d8bd1d [2024-12-06 03:58:14,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 03:58:14,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 03:58:14,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 03:58:14,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 03:58:14,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 03:58:14,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761084a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14, skipping insertion in model container [2024-12-06 03:58:14,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 03:58:14,479 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_151be4df-9277-45f2-8b14-4c839ad7c74f/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2024-12-06 03:58:14,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:58:14,490 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 03:58:14,500 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_151be4df-9277-45f2-8b14-4c839ad7c74f/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2024-12-06 03:58:14,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:58:14,512 INFO L204 MainTranslator]: Completed translation [2024-12-06 03:58:14,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14 WrapperNode [2024-12-06 03:58:14,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 03:58:14,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 03:58:14,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 03:58:14,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 03:58:14,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,534 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-12-06 03:58:14,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 03:58:14,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 03:58:14,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 03:58:14,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 03:58:14,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 03:58:14,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 03:58:14,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 03:58:14,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 03:58:14,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:58:14,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 03:58:14,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 03:58:14,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 03:58:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 03:58:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 03:58:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2024-12-06 03:58:14,598 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2024-12-06 03:58:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 03:58:14,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 03:58:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-12-06 03:58:14,599 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-12-06 03:58:14,657 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 03:58:14,659 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 03:58:14,758 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-12-06 03:58:14,758 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 03:58:14,774 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 03:58:14,775 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 03:58:14,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:58:14 BoogieIcfgContainer [2024-12-06 03:58:14,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 03:58:14,776 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 03:58:14,776 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 03:58:14,784 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 03:58:14,784 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:58:14" (1/1) ... [2024-12-06 03:58:14,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 03:58:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2024-12-06 03:58:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-12-06 03:58:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 03:58:14,840 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:15,044 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 03:58:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2024-12-06 03:58:15,126 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-12-06 03:58:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-06 03:58:15,127 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:15,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:15,313 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 03:58:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2024-12-06 03:58:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-12-06 03:58:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-06 03:58:15,575 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:15,776 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 03:58:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2024-12-06 03:58:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2024-12-06 03:58:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-06 03:58:16,335 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-06 03:58:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2024-12-06 03:58:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2024-12-06 03:58:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-06 03:58:16,960 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-06 03:58:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2024-12-06 03:58:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2024-12-06 03:58:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-06 03:58:17,249 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-06 03:58:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2024-12-06 03:58:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2024-12-06 03:58:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-06 03:58:17,989 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:58:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-06 03:58:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:58:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2024-12-06 03:58:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2024-12-06 03:58:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-06 03:58:18,340 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:58:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:58:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:58:18,356 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:58:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:58:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:58:18,433 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:58:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:58:18,466 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2024-12-06 03:58:18,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 03:58:18 ImpRootNode [2024-12-06 03:58:18,498 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 03:58:18,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 03:58:18,499 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 03:58:18,499 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 03:58:18,500 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:58:14" (3/4) ... [2024-12-06 03:58:18,501 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 03:58:18,549 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 20. [2024-12-06 03:58:18,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 03:58:18,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 03:58:18,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 03:58:18,616 INFO L158 Benchmark]: Toolchain (without parser) took 4259.85ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 73.8MB in the end (delta: 44.0MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2024-12-06 03:58:18,616 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:58:18,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.45ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 106.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 03:58:18,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.78ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:58:18,618 INFO L158 Benchmark]: Boogie Preprocessor took 13.22ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.2MB in the end (delta: 588.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:58:18,618 INFO L158 Benchmark]: RCFGBuilder took 226.38ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 94.9MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:58:18,619 INFO L158 Benchmark]: CodeCheck took 3722.64ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 78.8MB in the end (delta: 16.2MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-12-06 03:58:18,619 INFO L158 Benchmark]: Witness Printer took 115.99ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 73.8MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 03:58:18,621 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1018 IncrementalHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 165 mSDtfsCounter, 1018 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1618 SyntacticMatches, 75 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 32/64 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int input = 5; VAL [input=5] [L21] CALL, EXPR id(input) VAL [\old(x)=5] [L10] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=4] [L15] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L16] CALL, EXPR id(x-1) VAL [\old(x)=3] [L10] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=2] [L15] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L16] CALL, EXPR id(x-1) VAL [\old(x)=1] [L10] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=0] [L15] COND TRUE x==0 [L15] return 0; VAL [\old(x)=0, \result=0] [L11] RET, EXPR id2(x-1) VAL [\old(x)=1, x=1] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=3, x=3] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=5, x=5] [L11] return id2(x-1) + 1; [L21] RET, EXPR id(input) VAL [input=5] [L21] int result = id(input); [L22] COND TRUE result == 5 VAL [input=5] [L23] reach_error() VAL [input=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.45ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 106.9MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.78ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.22ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.2MB in the end (delta: 588.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.38ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 94.9MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 3722.64ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 78.8MB in the end (delta: 16.2MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 115.99ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 73.8MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 03:58:18,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151be4df-9277-45f2-8b14-4c839ad7c74f/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