./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 cf1a7837 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_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/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_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV --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 0.2.3-dev-cf1a783 [2023-11-11 23:51:41,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:51:41,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-11 23:51:41,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:51:41,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:51:41,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:51:41,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:51:41,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:51:41,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:51:41,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:51:41,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:51:41,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:51:41,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-11 23:51:41,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:51:41,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-11 23:51:41,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:51:41,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:51:41,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:51:41,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:51:41,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-11 23:51:41,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:51:41,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:51:41,907 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:51:41,908 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:51:41,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:51:41,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:51:41,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:51:41,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:51:41,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:51:41,911 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:51:41,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:51:41,913 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:51:41,913 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_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 [2023-11-11 23:51:42,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:51:42,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:51:42,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:51:42,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:51:42,285 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:51:42,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2023-11-11 23:51:45,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:51:45,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:51:45,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2023-11-11 23:51:45,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/data/212a53e96/0518e90263f34ad698813a6ed52794b4/FLAGfe178946d [2023-11-11 23:51:45,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/data/212a53e96/0518e90263f34ad698813a6ed52794b4 [2023-11-11 23:51:45,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:51:45,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:51:45,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:51:45,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:51:45,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:51:45,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:51:45" (1/1) ... [2023-11-11 23:51:45,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135326ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:45, skipping insertion in model container [2023-11-11 23:51:45,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:51:45" (1/1) ... [2023-11-11 23:51:45,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:51:45,950 WARN L240 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_473e1363-84fc-4693-b5a5-d82ad8387eb1/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2023-11-11 23:51:45,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:51:45,995 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:51:46,009 WARN L240 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_473e1363-84fc-4693-b5a5-d82ad8387eb1/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2023-11-11 23:51:46,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:51:46,024 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:51:46,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46 WrapperNode [2023-11-11 23:51:46,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:51:46,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:51:46,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:51:46,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:51:46,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,063 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-11 23:51:46,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:51:46,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:51:46,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:51:46,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:51:46,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:51:46,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:51:46,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:51:46,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:51:46,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:51:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:51:46,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:51:46,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:51:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-11 23:51:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-11 23:51:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2023-11-11 23:51:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2023-11-11 23:51:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:51:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:51:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-11 23:51:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-11 23:51:46,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:51:46,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:51:46,435 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:51:46,450 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:51:46,451 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-11 23:51:46,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:51:46 BoogieIcfgContainer [2023-11-11 23:51:46,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:51:46,455 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:51:46,455 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:51:46,466 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:51:46,466 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:51:46" (1/1) ... [2023-11-11 23:51:46,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:51:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2023-11-11 23:51:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-11 23:51:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:51:46,541 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:46,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:51:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2023-11-11 23:51:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-11 23:51:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-11 23:51:46,892 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:51:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2023-11-11 23:51:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-11-11 23:51:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-11 23:51:47,461 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-11 23:51:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2023-11-11 23:51:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-11-11 23:51:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-11 23:51:48,435 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-11 23:51:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2023-11-11 23:51:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2023-11-11 23:51:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-11 23:51:49,193 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-11 23:51:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2023-11-11 23:51:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2023-11-11 23:51:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-11 23:51:49,538 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-11 23:51:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2023-11-11 23:51:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2023-11-11 23:51:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-11 23:51:50,291 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:51:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-11 23:51:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:51:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2023-11-11 23:51:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2023-11-11 23:51:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-11 23:51:50,609 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:51:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:51:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-11 23:51:50,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-11 23:51:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-11 23:51:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-11 23:51:50,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-11 23:51:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-11 23:51:50,712 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2023-11-11 23:51:50,777 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,778 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-11 23:51:50,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-11 23:51:50,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,780 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-11 23:51:50,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:51:50 ImpRootNode [2023-11-11 23:51:50,785 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:51:50,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:51:50,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:51:50,787 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:51:50,789 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:51:46" (3/4) ... [2023-11-11 23:51:50,790 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-11 23:51:50,839 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,843 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-11 23:51:50,844 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,844 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-11 23:51:50,845 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated [2023-11-11 23:51:50,850 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-11 23:51:50,925 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:51:50,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:51:50,926 INFO L158 Benchmark]: Toolchain (without parser) took 5187.40ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 77.3MB in the beginning and 174.1MB in the end (delta: -96.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:51:50,927 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 101.2MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:51:50,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.53ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 76.8MB in the beginning and 141.0MB in the end (delta: -64.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.93ms. Allocated memory is still 172.0MB. Free memory was 141.0MB in the beginning and 139.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,933 INFO L158 Benchmark]: Boogie Preprocessor took 27.90ms. Allocated memory is still 172.0MB. Free memory was 139.6MB in the beginning and 143.8MB in the end (delta: -4.3MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,933 INFO L158 Benchmark]: RCFGBuilder took 361.05ms. Allocated memory is still 172.0MB. Free memory was 143.8MB in the beginning and 133.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,935 INFO L158 Benchmark]: CodeCheck took 4330.71ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 133.3MB in the beginning and 177.2MB in the end (delta: -43.8MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,936 INFO L158 Benchmark]: Witness Printer took 139.42ms. Allocated memory is still 207.6MB. Free memory was 176.2MB in the beginning and 174.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:51:50,939 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: 4.2s, 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, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 1.8s 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, 1.2s 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 - 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, x=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, result=5] [L23] reach_error() VAL [input=5, result=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 101.2MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.53ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 76.8MB in the beginning and 141.0MB in the end (delta: -64.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.93ms. Allocated memory is still 172.0MB. Free memory was 141.0MB in the beginning and 139.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.90ms. Allocated memory is still 172.0MB. Free memory was 139.6MB in the beginning and 143.8MB in the end (delta: -4.3MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * RCFGBuilder took 361.05ms. Allocated memory is still 172.0MB. Free memory was 143.8MB in the beginning and 133.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4330.71ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 133.3MB in the beginning and 177.2MB in the end (delta: -43.8MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. * Witness Printer took 139.42ms. Allocated memory is still 207.6MB. Free memory was 176.2MB in the beginning and 174.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-11 23:51:50,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473e1363-84fc-4693-b5a5-d82ad8387eb1/bin/ukojak-verify-0OAaufAVZV/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