./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/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 f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a ................................................................................................................................................................................................................................................................ 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 04:25:01,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:25:01,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:25:01,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:25:01,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:25:01,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:25:01,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:25:01,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:25:01,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:25:01,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:25:01,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:25:01,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:25:01,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:25:01,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:25:01,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:25:01,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:25:01,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:25:01,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:25:01,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:25:01,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:25:01,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:25:01,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:25:01,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:25:01,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:25:01,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:25:01,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:25:01,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:25:01,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:25:01,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:25:01,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:25:01,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:25:01,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:25:01,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:25:01,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:25:01,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:25:01,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:25:01,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:25:01,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:25:01,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:25:01,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:25:01,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:25:01,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 04:25:01,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:25:01,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:25:01,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:25:01,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 04:25:01,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:25:01,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:25:01,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:25:01,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:25:01,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:25:01,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:25:01,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:25:01,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:25:01,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:25:01,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:25:01,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:25:01,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:25:01,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:25:01,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:25:01,603 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 04:25:01,603 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 04:25:01,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:25:01,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:25:01,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:25:01,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:25:01,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:25:01,606 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 04:25:01,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:25:01,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:25:01,607 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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a [2021-10-29 04:25:01,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:25:01,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:25:01,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:25:01,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:25:01,919 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:25:01,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-10-29 04:25:02,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/data/997fdc803/2e9c5be0dc884e13b79d29661380b589/FLAG5a5b8235f [2021-10-29 04:25:02,515 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:25:02,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-10-29 04:25:02,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/data/997fdc803/2e9c5be0dc884e13b79d29661380b589/FLAG5a5b8235f [2021-10-29 04:25:02,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/data/997fdc803/2e9c5be0dc884e13b79d29661380b589 [2021-10-29 04:25:02,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:25:02,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:25:02,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:25:02,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:25:02,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:25:02,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:25:02" (1/1) ... [2021-10-29 04:25:02,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a97b7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:02, skipping insertion in model container [2021-10-29 04:25:02,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:25:02" (1/1) ... [2021-10-29 04:25:02,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:25:02,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:25:03,110 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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2021-10-29 04:25:03,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:25:03,122 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:25:03,138 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_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2021-10-29 04:25:03,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:25:03,151 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:25:03,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03 WrapperNode [2021-10-29 04:25:03,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:25:03,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:25:03,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:25:03,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:25:03,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:25:03,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:25:03,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:25:03,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:25:03,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:25:03,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:25:03,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:25:03,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:25:03,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:25:03,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 04:25:03,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 04:25:03,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 04:25:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:25:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:25:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-10-29 04:25:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-10-29 04:25:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:25:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:25:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-29 04:25:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-29 04:25:03,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:25:03,613 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 04:25:03,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:25:03 BoogieIcfgContainer [2021-10-29 04:25:03,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:25:03,617 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 04:25:03,617 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 04:25:03,626 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 04:25:03,626 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:25:03" (1/1) ... [2021-10-29 04:25:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:25:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:25:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2021-10-29 04:25:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 04:25:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:25:03,679 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:25:03,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:25:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:25:03,886 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 04:25:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:25:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2021-10-29 04:25:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-29 04:25:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:25:03,939 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:25:03,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:25:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:25:04,164 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 04:25:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:25:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2021-10-29 04:25:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-10-29 04:25:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 04:25:04,568 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:25:04,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:25:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:25:04,615 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:25:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:25:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:25:04,704 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:25:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:25:04,764 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2021-10-29 04:25:04,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 04:25:04 ImpRootNode [2021-10-29 04:25:04,829 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 04:25:04,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:25:04,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:25:04,831 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:25:04,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:25:03" (3/4) ... [2021-10-29 04:25:04,834 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:25:04,911 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 04:25:04,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:25:04,918 INFO L168 Benchmark]: Toolchain (without parser) took 2030.00 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.9 MB in the beginning and 83.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:25:04,919 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 72.8 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:25:04,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.01 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 77.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:25:04,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:25:04,922 INFO L168 Benchmark]: Boogie Preprocessor took 19.09 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 904.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:25:04,922 INFO L168 Benchmark]: RCFGBuilder took 412.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 64.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:25:04,924 INFO L168 Benchmark]: CodeCheck took 1212.65 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 85.8 MB in the end (delta: -21.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:25:04,924 INFO L168 Benchmark]: Witness Printer took 86.30 ms. Allocated memory is still 121.6 MB. Free memory was 85.8 MB in the beginning and 83.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:25:04,933 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 66 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] unsigned int input = __VERIFIER_nondet_uint(); [L25] CALL, EXPR id(input) VAL [\old(x)=2] [L10] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=1] [L17] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L18] CALL, EXPR id(x-1) VAL [\old(x)=0] [L10] COND TRUE x==0 [L10] return 0; VAL [\old(x)=0, \result=0, x=0] [L18] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L18] unsigned int ret = id(x-1) + 1; [L19] COND FALSE !(ret > 3) [L20] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L11] RET, EXPR id2(x-1) VAL [\old(x)=2, id2(x-1)=1, x=2] [L11] unsigned int ret = id2(x-1) + 1; [L12] COND FALSE !(ret > 3) [L13] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L25] RET, EXPR id(input) [L25] unsigned int result = id(input); [L26] COND TRUE result == 2 [L27] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 72.8 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.01 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 77.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.09 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 904.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 412.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 64.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 1212.65 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 85.8 MB in the end (delta: -21.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 86.30 ms. Allocated memory is still 121.6 MB. Free memory was 85.8 MB in the beginning and 83.7 MB in the end (delta: 2.1 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 04:25:04,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c65c83ad-ac68-47d7-8ad2-ca6cd9742c2d/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...