./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/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_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN --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 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 06:22:16,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 06:22:16,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 06:22:16,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 06:22:16,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 06:22:16,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 06:22:16,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 06:22:16,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 06:22:16,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 06:22:16,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 06:22:16,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 06:22:16,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 06:22:16,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 06:22:16,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 06:22:16,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 06:22:16,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 06:22:16,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 06:22:16,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 06:22:16,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 06:22:16,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 06:22:16,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 06:22:16,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 06:22:16,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 06:22:16,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 06:22:16,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 06:22:16,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 06:22:16,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 06:22:16,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 06:22:16,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 06:22:16,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 06:22:16,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 06:22:16,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 06:22:16,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 06:22:16,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 06:22:16,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 06:22:16,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 06:22:16,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 06:22:16,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 06:22:16,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 06:22:16,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 06:22:16,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 06:22:16,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-21 06:22:16,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 06:22:16,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 06:22:16,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 06:22:16,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-21 06:22:16,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 06:22:16,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 06:22:16,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 06:22:16,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 06:22:16,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 06:22:16,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 06:22:16,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 06:22:16,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 06:22:16,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 06:22:16,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 06:22:16,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 06:22:16,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 06:22:16,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 06:22:16,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 06:22:16,287 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 06:22:16,287 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 06:22:16,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 06:22:16,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 06:22:16,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 06:22:16,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 06:22:16,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 06:22:16,289 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 06:22:16,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 06:22:16,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 06:22:16,290 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_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6f0ceb44f91fbf2c30fb7a6cf4ec4645c0e639d55219bc8a5d1521d1ed7589 [2021-11-21 06:22:16,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 06:22:16,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 06:22:16,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 06:22:16,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 06:22:16,591 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 06:22:16,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2021-11-21 06:22:16,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/data/0c725b1d8/8db7d08e52dc474380a4e0337a7bc15b/FLAG0ae9ca009 [2021-11-21 06:22:17,136 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 06:22:17,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2021-11-21 06:22:17,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/data/0c725b1d8/8db7d08e52dc474380a4e0337a7bc15b/FLAG0ae9ca009 [2021-11-21 06:22:17,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/data/0c725b1d8/8db7d08e52dc474380a4e0337a7bc15b [2021-11-21 06:22:17,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 06:22:17,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 06:22:17,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 06:22:17,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 06:22:17,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 06:22:17,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7024e21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17, skipping insertion in model container [2021-11-21 06:22:17,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 06:22:17,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 06:22:17,765 WARN L230 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_b29f0475-d519-453a-b78f-47f36b1951e7/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2021-11-21 06:22:17,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 06:22:17,789 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 06:22:17,803 WARN L230 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_b29f0475-d519-453a-b78f-47f36b1951e7/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c[548,561] [2021-11-21 06:22:17,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 06:22:17,816 INFO L208 MainTranslator]: Completed translation [2021-11-21 06:22:17,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17 WrapperNode [2021-11-21 06:22:17,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 06:22:17,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 06:22:17,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 06:22:17,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 06:22:17,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,853 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-21 06:22:17,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 06:22:17,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 06:22:17,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 06:22:17,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 06:22:17,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 06:22:17,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 06:22:17,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 06:22:17,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 06:22:17,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:22:17" (1/1) ... [2021-11-21 06:22:17,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 06:22:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 06:22:17,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 06:22:17,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 06:22:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 06:22:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 06:22:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-11-21 06:22:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-11-21 06:22:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 06:22:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 06:22:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-21 06:22:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-21 06:22:18,019 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 06:22:18,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 06:22:18,103 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 06:22:18,116 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 06:22:18,116 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 06:22:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:22:18 BoogieIcfgContainer [2021-11-21 06:22:18,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 06:22:18,120 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 06:22:18,120 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 06:22:18,130 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 06:22:18,130 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:22:18" (1/1) ... [2021-11-21 06:22:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 06:22:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2021-11-21 06:22:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-21 06:22:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 06:22:18,203 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:18,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 06:22:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2021-11-21 06:22:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-21 06:22:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 06:22:18,427 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:18,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 06:22:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2021-11-21 06:22:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-11-21 06:22:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 06:22:18,930 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:18,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 06:22:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2021-11-21 06:22:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-11-21 06:22:19,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 06:22:19,608 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:19,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 06:22:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2021-11-21 06:22:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2021-11-21 06:22:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 06:22:20,172 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:20,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 06:22:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2021-11-21 06:22:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2021-11-21 06:22:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 06:22:20,441 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:20,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 06:22:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2021-11-21 06:22:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2021-11-21 06:22:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 06:22:21,094 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:21,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:22:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 06:22:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:22:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2021-11-21 06:22:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2021-11-21 06:22:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 06:22:21,307 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:22:21,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:22:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:22:21,323 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 06:22:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:22:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:22:21,380 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 06:22:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:22:21,413 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2021-11-21 06:22:21,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:22:21 ImpRootNode [2021-11-21 06:22:21,455 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 06:22:21,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 06:22:21,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 06:22:21,456 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 06:22:21,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:22:18" (3/4) ... [2021-11-21 06:22:21,458 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 06:22:21,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 06:22:21,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 06:22:21,516 INFO L158 Benchmark]: Toolchain (without parser) took 3962.03ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 78.3MB in the beginning and 76.0MB in the end (delta: 2.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,517 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 06:22:21,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.37ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 83.2MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.71ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 81.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,519 INFO L158 Benchmark]: Boogie Preprocessor took 27.70ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 81.0MB in the end (delta: 856.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 06:22:21,520 INFO L158 Benchmark]: RCFGBuilder took 228.98ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 72.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,521 INFO L158 Benchmark]: CodeCheck took 3335.37ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 72.0MB in the beginning and 78.0MB in the end (delta: -6.0MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,522 INFO L158 Benchmark]: Witness Printer took 59.13ms. Allocated memory is still 130.0MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:22:21,527 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: 3.3s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 1.3s 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, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s 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, 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) VAL [id(input)=5, 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 0.32ms. Allocated memory is still 107.0MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.37ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 83.2MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.71ms. Allocated memory is still 107.0MB. Free memory was 83.2MB in the beginning and 81.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.70ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 81.0MB in the end (delta: 856.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.98ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 72.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 3335.37ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 72.0MB in the beginning and 78.0MB in the end (delta: -6.0MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 59.13ms. Allocated memory is still 130.0MB. Free memory was 78.0MB in the beginning and 76.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-21 06:22:21,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b29f0475-d519-453a-b78f-47f36b1951e7/bin/ukojak-vF6T2TMglN/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