./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk --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 9dc175bed280c85fbc7018a36f57353cd7d8c459346c67f95db055f6ec935a28 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:02:55,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:02:55,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 23:02:55,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:02:55,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:02:55,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:02:55,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:02:55,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:02:55,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:02:55,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:02:55,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:02:55,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:02:55,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:02:55,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:02:55,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:02:55,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:02:55,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:02:55,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:02:55,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:02:55,955 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:02:55,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:02:55,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:02:55,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:02:55,960 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:02:55,960 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:02:55,960 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:02:55,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:02:55,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:02:55,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:02:55,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:02:55,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:02:55,961 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:02:55,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:02:55,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc175bed280c85fbc7018a36f57353cd7d8c459346c67f95db055f6ec935a28 [2024-11-08 23:02:56,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:02:56,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:02:56,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:02:56,297 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:02:56,298 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:02:56,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c Unable to find full path for "g++" [2024-11-08 23:02:58,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:02:58,460 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:02:58,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2024-11-08 23:02:58,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/data/e862b37b2/74a66a43cde147c1814e6236325e743b/FLAGcee5e185b [2024-11-08 23:02:58,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/data/e862b37b2/74a66a43cde147c1814e6236325e743b [2024-11-08 23:02:58,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:02:58,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:02:58,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:02:58,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:02:58,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:02:58,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:02:58" (1/1) ... [2024-11-08 23:02:58,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d913d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:58, skipping insertion in model container [2024-11-08 23:02:58,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:02:58" (1/1) ... [2024-11-08 23:02:58,834 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:02:59,020 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_c4b1ed91-1989-4943-a8c0-031e4deef203/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c[454,467] [2024-11-08 23:02:59,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:02:59,036 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:02:59,046 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_c4b1ed91-1989-4943-a8c0-031e4deef203/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c[454,467] [2024-11-08 23:02:59,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:02:59,065 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:02:59,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59 WrapperNode [2024-11-08 23:02:59,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:02:59,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:02:59,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:02:59,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:02:59,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,093 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-08 23:02:59,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:02:59,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:02:59,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:02:59,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:02:59,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:02:59,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:02:59,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:02:59,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:02:59,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:02:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:02:59,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:02:59,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:02:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:02:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:02:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:02:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:02:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-08 23:02:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-08 23:02:59,265 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:02:59,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:02:59,409 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-08 23:02:59,409 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:02:59,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:02:59,438 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:02:59,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:02:59 BoogieIcfgContainer [2024-11-08 23:02:59,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:02:59,439 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:02:59,440 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:02:59,451 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:02:59,451 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:02:59" (1/1) ... [2024-11-08 23:02:59,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:02:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:02:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2024-11-08 23:02:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-08 23:02:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:02:59,541 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:02:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:02:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:02:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:02:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:02:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-11-08 23:02:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-08 23:02:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 23:02:59,888 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:02:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:02:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 23:03:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2024-11-08 23:03:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-11-08 23:03:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 23:03:00,596 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 23:03:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2024-11-08 23:03:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2024-11-08 23:03:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 23:03:01,313 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 23:03:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2024-11-08 23:03:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2024-11-08 23:03:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 23:03:01,980 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 23:03:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 38 states and 70 transitions. [2024-11-08 23:03:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2024-11-08 23:03:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 23:03:02,676 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 23:03:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 43 states and 87 transitions. [2024-11-08 23:03:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 87 transitions. [2024-11-08 23:03:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 23:03:03,390 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-08 23:03:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 48 states and 106 transitions. [2024-11-08 23:03:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 106 transitions. [2024-11-08 23:03:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 23:03:04,139 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-08 23:03:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 53 states and 127 transitions. [2024-11-08 23:03:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions. [2024-11-08 23:03:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 23:03:04,983 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 23:03:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 58 states and 150 transitions. [2024-11-08 23:03:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 150 transitions. [2024-11-08 23:03:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 23:03:05,853 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:05,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:03:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-08 23:03:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:03:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 63 states and 175 transitions. [2024-11-08 23:03:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 175 transitions. [2024-11-08 23:03:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 23:03:06,842 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:03:06,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:03:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:03:06,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:03:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:03:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:03:06,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:03:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:03:06,977 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2024-11-08 23:03:07,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:03:07 ImpRootNode [2024-11-08 23:03:07,012 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:03:07,012 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:03:07,012 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:03:07,013 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:03:07,013 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:02:59" (3/4) ... [2024-11-08 23:03:07,014 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 23:03:07,087 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 23:03:07,087 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:03:07,088 INFO L158 Benchmark]: Toolchain (without parser) took 8286.22ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 110.5MB in the end (delta: 18.4MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,089 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:03:07,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.77ms. Allocated memory is still 161.5MB. Free memory was 128.4MB in the beginning and 116.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.04ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 115.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,094 INFO L158 Benchmark]: Boogie Preprocessor took 18.46ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 114.5MB in the end (delta: 544.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:03:07,095 INFO L158 Benchmark]: RCFGBuilder took 324.97ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 104.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,095 INFO L158 Benchmark]: CodeCheck took 7572.42ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 104.0MB in the beginning and 112.6MB in the end (delta: -8.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,096 INFO L158 Benchmark]: Witness Printer took 75.22ms. Allocated memory is still 197.1MB. Free memory was 112.6MB in the beginning and 110.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:03:07,098 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: 7.5s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 640 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 389 mSDsluCounter, 582 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 380 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2771 IncrementalHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 202 mSDtfsCounter, 2771 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4868 GetRequests, 4538 SyntacticMatches, 212 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4719 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 10; VAL [input=10] [L13] CALL, EXPR id(input) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, x=10] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [input=10] [L13] int result = id(input); [L14] COND TRUE result == 10 VAL [input=10] [L15] reach_error() VAL [input=10] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.77ms. Allocated memory is still 161.5MB. Free memory was 128.4MB in the beginning and 116.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.04ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 115.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.46ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 114.5MB in the end (delta: 544.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.97ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 104.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 7572.42ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 104.0MB in the beginning and 112.6MB in the end (delta: -8.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Witness Printer took 75.22ms. Allocated memory is still 197.1MB. Free memory was 112.6MB in the beginning and 110.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 23:03:07,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b1ed91-1989-4943-a8c0-031e4deef203/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE