./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB --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 2b1e7360b510ceea1b4f190c67c2656c6deb0030b7718750b71696817135287b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:05:32,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:05:32,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:05:32,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:05:32,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:05:32,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:05:32,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:05:32,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:05:32,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:05:32,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:05:32,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:05:32,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:05:32,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:05:32,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:05:32,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:05:32,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:05:32,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:05:32,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:05:32,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:05:32,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:05:32,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:05:32,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:05:32,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:05:32,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:05:32,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:05:32,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:05:32,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:05:32,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:05:32,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:05:32,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:05:32,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:05:32,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:05:32,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:05:32,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:05:32,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:05:32,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:05:32,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:05:32,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:05:32,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:05:32,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:05:32,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:05:32,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 17:05:32,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:05:32,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:05:32,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:05:32,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 17:05:32,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:05:32,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:05:32,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:05:32,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:05:32,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:05:32,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:05:32,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:05:32,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:05:32,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:05:32,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:05:32,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:05:32,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:05:32,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:05:32,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:05:32,991 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 17:05:32,991 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 17:05:32,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:05:32,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:05:32,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:05:32,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:05:32,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:05:32,992 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 17:05:32,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:05:32,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:05:32,993 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_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b1e7360b510ceea1b4f190c67c2656c6deb0030b7718750b71696817135287b [2022-10-17 17:05:33,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:05:33,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:05:33,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:05:33,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:05:33,314 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:05:33,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2022-10-17 17:05:33,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/data/eee6be6dd/048849926ff044c39ad9f2f8dea86824/FLAG4f377fc01 [2022-10-17 17:05:33,963 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:05:33,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2022-10-17 17:05:33,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/data/eee6be6dd/048849926ff044c39ad9f2f8dea86824/FLAG4f377fc01 [2022-10-17 17:05:34,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/data/eee6be6dd/048849926ff044c39ad9f2f8dea86824 [2022-10-17 17:05:34,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:05:34,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:05:34,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:05:34,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:05:34,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:05:34,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0f4368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34, skipping insertion in model container [2022-10-17 17:05:34,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:05:34,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:05:34,632 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_a74ea92d-49a2-41de-848d-f2894846c0e6/sv-benchmarks/c/recursive-simple/sum_10x0-2.c[481,494] [2022-10-17 17:05:34,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:05:34,645 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:05:34,661 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_a74ea92d-49a2-41de-848d-f2894846c0e6/sv-benchmarks/c/recursive-simple/sum_10x0-2.c[481,494] [2022-10-17 17:05:34,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:05:34,677 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:05:34,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34 WrapperNode [2022-10-17 17:05:34,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:05:34,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:05:34,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:05:34,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:05:34,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,722 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-10-17 17:05:34,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:05:34,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:05:34,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:05:34,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:05:34,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:05:34,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:05:34,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:05:34,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:05:34,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:34" (1/1) ... [2022-10-17 17:05:34,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:05:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 17:05:34,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 17:05:34,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 17:05:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:05:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:05:34,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:05:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-10-17 17:05:34,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-10-17 17:05:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:05:34,947 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:05:34,949 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:05:35,098 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:05:35,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:05:35,117 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:05:35,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:35 BoogieIcfgContainer [2022-10-17 17:05:35,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:05:35,121 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 17:05:35,121 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 17:05:35,134 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 17:05:35,134 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:35" (1/1) ... [2022-10-17 17:05:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:05:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2022-10-17 17:05:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-10-17 17:05:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:05:35,306 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:05:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2022-10-17 17:05:35,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-10-17 17:05:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:05:35,812 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:05:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2022-10-17 17:05:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-10-17 17:05:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 17:05:36,280 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:36,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 17:05:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2022-10-17 17:05:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-10-17 17:05:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 17:05:36,683 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:05:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2022-10-17 17:05:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2022-10-17 17:05:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 17:05:37,094 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 17:05:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2022-10-17 17:05:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2022-10-17 17:05:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 17:05:37,429 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 17:05:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2022-10-17 17:05:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2022-10-17 17:05:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 17:05:37,791 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-17 17:05:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2022-10-17 17:05:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2022-10-17 17:05:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 17:05:38,114 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-17 17:05:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2022-10-17 17:05:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2022-10-17 17:05:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 17:05:38,474 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 17:05:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2022-10-17 17:05:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2022-10-17 17:05:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:05:38,952 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:05:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-10-17 17:05:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 43 states and 99 transitions. [2022-10-17 17:05:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2022-10-17 17:05:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-17 17:05:39,430 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:39,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:39,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:05:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:39,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:05:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:39,740 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2022-10-17 17:05:39,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 05:05:39 ImpRootNode [2022-10-17 17:05:39,832 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 17:05:39,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:05:39,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:05:39,834 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:05:39,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:35" (3/4) ... [2022-10-17 17:05:39,837 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:05:39,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 17:05:39,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:05:39,943 INFO L158 Benchmark]: Toolchain (without parser) took 5612.51ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 67.4MB in the beginning and 45.7MB in the end (delta: 21.7MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,946 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:05:39,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.22ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.64ms. Allocated memory is still 90.2MB. Free memory was 65.4MB in the beginning and 64.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,952 INFO L158 Benchmark]: Boogie Preprocessor took 30.83ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.2MB in the end (delta: 854.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:05:39,953 INFO L158 Benchmark]: RCFGBuilder took 364.53ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 53.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,955 INFO L158 Benchmark]: CodeCheck took 4711.72ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 53.7MB in the beginning and 48.8MB in the end (delta: 4.9MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,955 INFO L158 Benchmark]: Witness Printer took 108.11ms. Allocated memory is still 123.7MB. Free memory was 47.8MB in the beginning and 45.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:05:39,958 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 547 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1402 IncrementalHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 138 mSDtfsCounter, 1402 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3873 GetRequests, 3831 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int a = 10; [L15] int b = 0; VAL [a=10, b=0] [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=10, m=0, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=9, m=1, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=8, m=2, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=7, m=3, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=6, m=4, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=5, m=5, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=4, m=6, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=3, m=7, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=2, m=8, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=1, m=9, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=10, \old(n)=0, \result=10, m=10, n=0] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1, m=9, n=1, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2, m=8, n=2, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3, m=7, n=3, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4, m=6, n=4, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5, m=5, n=5, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6, m=4, n=6, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7, m=3, n=7, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8, m=2, n=8, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9, m=1, n=9, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=10, m=0, n=10, sum(n - 1, m + 1)=10] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) VAL [a=10, b=0, sum(a, b)=10] [L16] int result = sum(a, b); [L17] COND TRUE result == a + b VAL [a=10, b=0, result=10] [L18] reach_error() VAL [a=10, b=0, result=10] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.22ms. Allocated memory is still 90.2MB. Free memory was 67.2MB in the beginning and 65.6MB in the end (delta: 1.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.64ms. Allocated memory is still 90.2MB. Free memory was 65.4MB in the beginning and 64.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.83ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.2MB in the end (delta: 854.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 364.53ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 53.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4711.72ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 53.7MB in the beginning and 48.8MB in the end (delta: 4.9MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. * Witness Printer took 108.11ms. Allocated memory is still 123.7MB. Free memory was 47.8MB in the beginning and 45.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 17:05:40,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74ea92d-49a2-41de-848d-f2894846c0e6/bin/ukojak-92XMlrwhuB/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