./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/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_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY --witnessprinter.witness.filename witness.graphml --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 990c50250359c7452ab1ceec7da37e6f04bc6511 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 04:47:55,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 04:47:55,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 04:47:55,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 04:47:55,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 04:47:55,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 04:47:55,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 04:47:55,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 04:47:55,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 04:47:55,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 04:47:55,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 04:47:55,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 04:47:55,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 04:47:55,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 04:47:55,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 04:47:55,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 04:47:55,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 04:47:55,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 04:47:55,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 04:47:55,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 04:47:55,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 04:47:55,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 04:47:55,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 04:47:55,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 04:47:55,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 04:47:55,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 04:47:55,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 04:47:55,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 04:47:55,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 04:47:55,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 04:47:55,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 04:47:55,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 04:47:55,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 04:47:55,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 04:47:55,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 04:47:55,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 04:47:55,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 04:47:55,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 04:47:55,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 04:47:55,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 04:47:55,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 04:47:55,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-13 04:47:55,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 04:47:55,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 04:47:55,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 04:47:55,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 04:47:55,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 04:47:55,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 04:47:55,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 04:47:55,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 04:47:55,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 04:47:55,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 04:47:55,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 04:47:55,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 04:47:55,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 04:47:55,169 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 04:47:55,169 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 04:47:55,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 04:47:55,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:47:55,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 04:47:55,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 04:47:55,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 04:47:55,170 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 04:47:55,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 04:47:55,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 04:47:55,170 INFO L138 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_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 990c50250359c7452ab1ceec7da37e6f04bc6511 [2021-10-13 04:47:55,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 04:47:55,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 04:47:55,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 04:47:55,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 04:47:55,512 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 04:47:55,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2021-10-13 04:47:55,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/data/c1f3540a1/160bc7ea6ea840259c64772d7f688d99/FLAG76278be45 [2021-10-13 04:47:56,025 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 04:47:56,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2021-10-13 04:47:56,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/data/c1f3540a1/160bc7ea6ea840259c64772d7f688d99/FLAG76278be45 [2021-10-13 04:47:56,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/data/c1f3540a1/160bc7ea6ea840259c64772d7f688d99 [2021-10-13 04:47:56,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 04:47:56,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 04:47:56,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 04:47:56,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 04:47:56,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 04:47:56,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e50f43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56, skipping insertion in model container [2021-10-13 04:47:56,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 04:47:56,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 04:47:56,633 WARN L228 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_d6121080-b4f6-4038-978b-0851cf7f4cf4/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2021-10-13 04:47:56,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:47:56,652 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 04:47:56,673 WARN L228 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_d6121080-b4f6-4038-978b-0851cf7f4cf4/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2021-10-13 04:47:56,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:47:56,690 INFO L208 MainTranslator]: Completed translation [2021-10-13 04:47:56,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56 WrapperNode [2021-10-13 04:47:56,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 04:47:56,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 04:47:56,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 04:47:56,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 04:47:56,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 04:47:56,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 04:47:56,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 04:47:56,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 04:47:56,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 04:47:56,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 04:47:56,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 04:47:56,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 04:47:56,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:56" (1/1) ... [2021-10-13 04:47:56,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:47:56,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/z3 [2021-10-13 04:47:56,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 04:47:56,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 04:47:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 04:47:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 04:47:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-10-13 04:47:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-10-13 04:47:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 04:47:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 04:47:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-13 04:47:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-13 04:47:57,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 04:47:57,160 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 04:47:57,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:57 BoogieIcfgContainer [2021-10-13 04:47:57,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 04:47:57,164 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 04:47:57,165 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 04:47:57,175 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 04:47:57,176 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:57" (1/1) ... [2021-10-13 04:47:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 04:47:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2021-10-13 04:47:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-13 04:47:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 04:47:57,228 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:57,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:47:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2021-10-13 04:47:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-13 04:47:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 04:47:57,593 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:57,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:47:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2021-10-13 04:47:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-10-13 04:47:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 04:47:58,007 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:58,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 04:47:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2021-10-13 04:47:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-13 04:47:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 04:47:58,742 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:58,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 04:47:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2021-10-13 04:47:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2021-10-13 04:47:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 04:47:59,247 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:59,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 04:47:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:47:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2021-10-13 04:47:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2021-10-13 04:47:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 04:47:59,522 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:47:59,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:47:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:47:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 04:48:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:48:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2021-10-13 04:48:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2021-10-13 04:48:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 04:48:00,146 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:48:00,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:48:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:48:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 04:48:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:48:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2021-10-13 04:48:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2021-10-13 04:48:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 04:48:00,394 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:48:00,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:48:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:48:00,437 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:48:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:48:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:48:00,510 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:48:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:48:00,569 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2021-10-13 04:48:00,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 04:48:00 ImpRootNode [2021-10-13 04:48:00,648 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 04:48:00,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 04:48:00,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 04:48:00,649 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 04:48:00,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:57" (3/4) ... [2021-10-13 04:48:00,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 04:48:00,758 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 04:48:00,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 04:48:00,761 INFO L168 Benchmark]: Toolchain (without parser) took 4356.03 ms. Allocated memory was 119.5 MB in the beginning and 172.0 MB in the end (delta: 52.4 MB). Free memory was 82.3 MB in the beginning and 92.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,762 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 119.5 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:48:00,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.34 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 95.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 94.2 MB in the end (delta: 991.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,765 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 93.1 MB in the end (delta: 551.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:48:00,766 INFO L168 Benchmark]: RCFGBuilder took 393.61 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 83.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,767 INFO L168 Benchmark]: CodeCheck took 3483.91 ms. Allocated memory was 119.5 MB in the beginning and 172.0 MB in the end (delta: 52.4 MB). Free memory was 82.7 MB in the beginning and 96.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,768 INFO L168 Benchmark]: Witness Printer took 109.90 ms. Allocated memory is still 172.0 MB. Free memory was 96.0 MB in the beginning and 92.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 04:48:00,774 INFO L339 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: 3382.6ms, OverallIterations: 8, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1600 SDtfs, 1308 SDslu, 1464 SDs, 0 SdLazy, 6476 SolverSat, 1404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1603.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1618 SyntacticMatches, 75 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1735.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 41.2ms SsaConstructionTime, 197.7ms SatisfiabilityAnalysisTime, 752.4ms 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, 0.0ms 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; [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, id2(x-1)=0, x=1] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=3, id2(x-1)=2, x=3] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=5, id2(x-1)=4, x=5] [L11] return id2(x-1) + 1; [L21] RET, EXPR id(input) [L21] int result = id(input); [L22] COND TRUE result == 5 [L23] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 119.5 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.34 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 95.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.83 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 94.2 MB in the end (delta: 991.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 119.5 MB. Free memory was 93.7 MB in the beginning and 93.1 MB in the end (delta: 551.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 393.61 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 83.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 3483.91 ms. Allocated memory was 119.5 MB in the beginning and 172.0 MB in the end (delta: 52.4 MB). Free memory was 82.7 MB in the beginning and 96.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Witness Printer took 109.90 ms. Allocated memory is still 172.0 MB. Free memory was 96.0 MB in the beginning and 92.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 04:48:00,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6121080-b4f6-4038-978b-0851cf7f4cf4/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...