./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI --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 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef ..................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 03:46:20,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 03:46:20,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 03:46:20,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 03:46:20,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 03:46:20,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 03:46:20,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 03:46:20,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 03:46:20,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 03:46:20,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 03:46:20,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 03:46:20,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 03:46:20,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 03:46:20,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 03:46:20,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 03:46:20,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 03:46:20,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 03:46:20,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 03:46:20,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 03:46:20,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 03:46:20,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 03:46:20,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 03:46:20,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 03:46:20,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 03:46:20,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 03:46:20,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 03:46:20,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 03:46:20,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 03:46:20,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 03:46:20,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 03:46:20,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 03:46:20,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 03:46:20,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 03:46:20,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 03:46:20,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 03:46:20,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 03:46:20,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 03:46:20,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 03:46:20,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 03:46:20,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 03:46:20,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 03:46:20,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 03:46:20,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 03:46:20,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 03:46:20,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 03:46:20,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 03:46:20,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 03:46:20,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 03:46:20,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 03:46:20,995 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 03:46:21,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 03:46:21,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 03:46:21,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 03:46:21,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 03:46:21,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 03:46:21,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 03:46:21,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 03:46:21,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 03:46:21,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 03:46:21,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 03:46:21,005 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 03:46:21,006 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 03:46:21,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 03:46:21,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:46:21,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 03:46:21,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 03:46:21,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 03:46:21,007 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 03:46:21,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 03:46:21,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 03:46:21,008 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_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef [2021-10-29 03:46:21,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 03:46:21,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 03:46:21,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 03:46:21,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 03:46:21,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 03:46:21,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2021-10-29 03:46:21,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/data/56c822f1d/b8fe87835b714f4982a54e1f058069bf/FLAG146809564 [2021-10-29 03:46:21,931 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 03:46:21,932 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2021-10-29 03:46:21,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/data/56c822f1d/b8fe87835b714f4982a54e1f058069bf/FLAG146809564 [2021-10-29 03:46:22,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/data/56c822f1d/b8fe87835b714f4982a54e1f058069bf [2021-10-29 03:46:22,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 03:46:22,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 03:46:22,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 03:46:22,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 03:46:22,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 03:46:22,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a873ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22, skipping insertion in model container [2021-10-29 03:46:22,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 03:46:22,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 03:46:22,596 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_c2c9a132-8118-47ef-83e8-2c8b45746121/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2021-10-29 03:46:22,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:46:22,617 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 03:46:22,632 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_c2c9a132-8118-47ef-83e8-2c8b45746121/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2021-10-29 03:46:22,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:46:22,646 INFO L208 MainTranslator]: Completed translation [2021-10-29 03:46:22,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22 WrapperNode [2021-10-29 03:46:22,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 03:46:22,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 03:46:22,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 03:46:22,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 03:46:22,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 03:46:22,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 03:46:22,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 03:46:22,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 03:46:22,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 03:46:22,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 03:46:22,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 03:46:22,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 03:46:22,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:22" (1/1) ... [2021-10-29 03:46:22,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:46:22,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 03:46:22,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 03:46:22,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 03:46:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 03:46:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 03:46:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 03:46:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-29 03:46:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-29 03:46:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 03:46:23,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 03:46:23,061 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 03:46:23,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:23 BoogieIcfgContainer [2021-10-29 03:46:23,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 03:46:23,065 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 03:46:23,065 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 03:46:23,075 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 03:46:23,085 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:23" (1/1) ... [2021-10-29 03:46:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 03:46:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2021-10-29 03:46:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-29 03:46:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 03:46:23,173 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:23,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:46:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:46:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2021-10-29 03:46:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-10-29 03:46:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 03:46:23,483 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:23,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:46:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 03:46:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2021-10-29 03:46:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-29 03:46:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 03:46:24,008 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:24,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:46:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-29 03:46:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2021-10-29 03:46:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2021-10-29 03:46:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 03:46:24,581 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:24,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:46:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-29 03:46:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2021-10-29 03:46:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2021-10-29 03:46:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 03:46:25,082 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:25,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:46:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 03:46:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:46:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 38 states and 70 transitions. [2021-10-29 03:46:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2021-10-29 03:46:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 03:46:25,559 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:46:25,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:46:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:46:25,588 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:46:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:46:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:46:25,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:46:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:46:25,746 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2021-10-29 03:46:25,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 03:46:25 ImpRootNode [2021-10-29 03:46:25,834 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 03:46:25,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 03:46:25,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 03:46:25,840 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 03:46:25,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:23" (3/4) ... [2021-10-29 03:46:25,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 03:46:25,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 03:46:25,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 03:46:25,907 INFO L168 Benchmark]: Toolchain (without parser) took 3567.72 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 81.8 MB in the beginning and 105.4 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:46:25,908 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 86.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:46:25,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.81 ms. Allocated memory is still 115.3 MB. Free memory was 81.6 MB in the beginning and 92.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 03:46:25,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:46:25,911 INFO L168 Benchmark]: Boogie Preprocessor took 26.95 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.3 MB in the end (delta: 591.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:46:25,912 INFO L168 Benchmark]: RCFGBuilder took 350.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 80.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 03:46:25,913 INFO L168 Benchmark]: CodeCheck took 2769.37 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 80.0 MB in the beginning and 107.8 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:46:25,914 INFO L168 Benchmark]: Witness Printer took 70.39 ms. Allocated memory is still 138.4 MB. Free memory was 107.8 MB in the beginning and 105.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:46:25,920 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 288 SDslu, 272 SDs, 0 SdLazy, 1650 SolverSat, 346 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 974 SyntacticMatches, 42 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 50/100 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 5; [L13] CALL, EXPR id(input) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 5 [L15] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 86.3 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.81 ms. Allocated memory is still 115.3 MB. Free memory was 81.6 MB in the beginning and 92.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.95 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.3 MB in the end (delta: 591.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 350.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 80.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 2769.37 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 80.0 MB in the beginning and 107.8 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.39 ms. Allocated memory is still 138.4 MB. Free memory was 107.8 MB in the beginning and 105.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-29 03:46:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c9a132-8118-47ef-83e8-2c8b45746121/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...