./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/n.c11.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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/n.c11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/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 c22d07de108fc4801b9b7475bdc68ff9a5f4a90db882102d1715237a6b65777f ......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 02:53:48,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 02:53:48,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 02:53:48,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 02:53:48,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 02:53:48,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 02:53:48,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 02:53:48,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 02:53:48,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 02:53:48,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 02:53:48,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 02:53:48,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 02:53:48,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 02:53:48,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 02:53:48,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 02:53:48,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 02:53:48,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 02:53:48,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 02:53:48,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 02:53:48,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 02:53:48,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 02:53:48,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 02:53:48,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 02:53:48,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 02:53:48,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 02:53:48,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 02:53:48,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 02:53:48,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 02:53:48,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 02:53:48,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 02:53:48,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 02:53:48,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 02:53:48,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 02:53:48,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 02:53:48,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 02:53:48,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 02:53:48,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 02:53:48,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 02:53:48,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 02:53:48,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 02:53:48,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 02:53:48,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 02:53:48,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 02:53:48,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 02:53:48,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 02:53:48,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 02:53:48,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 02:53:48,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 02:53:48,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 02:53:48,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 02:53:48,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 02:53:48,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 02:53:48,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 02:53:48,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 02:53:48,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 02:53:48,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 02:53:48,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 02:53:48,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 02:53:48,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 02:53:48,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 02:53:48,500 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 02:53:48,501 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 02:53:48,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 02:53:48,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 02:53:48,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 02:53:48,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 02:53:48,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 02:53:48,502 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 02:53:48,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 02:53:48,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 02:53:48,503 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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22d07de108fc4801b9b7475bdc68ff9a5f4a90db882102d1715237a6b65777f [2021-10-29 02:53:48,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 02:53:48,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 02:53:48,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 02:53:48,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 02:53:48,859 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 02:53:48,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/loops/n.c11.c [2021-10-29 02:53:48,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/data/eb1a578bc/954d7bee35a7459681ece46b74770401/FLAGf4aa2d261 [2021-10-29 02:53:49,380 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 02:53:49,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/sv-benchmarks/c/loops/n.c11.c [2021-10-29 02:53:49,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/data/eb1a578bc/954d7bee35a7459681ece46b74770401/FLAGf4aa2d261 [2021-10-29 02:53:49,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/data/eb1a578bc/954d7bee35a7459681ece46b74770401 [2021-10-29 02:53:49,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 02:53:49,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 02:53:49,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 02:53:49,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 02:53:49,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 02:53:49,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:53:49" (1/1) ... [2021-10-29 02:53:49,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59124049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:49, skipping insertion in model container [2021-10-29 02:53:49,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:53:49" (1/1) ... [2021-10-29 02:53:49,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 02:53:49,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 02:53:49,971 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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/sv-benchmarks/c/loops/n.c11.c[317,330] [2021-10-29 02:53:49,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 02:53:50,003 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 02:53:50,024 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_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/sv-benchmarks/c/loops/n.c11.c[317,330] [2021-10-29 02:53:50,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 02:53:50,045 INFO L208 MainTranslator]: Completed translation [2021-10-29 02:53:50,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50 WrapperNode [2021-10-29 02:53:50,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 02:53:50,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 02:53:50,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 02:53:50,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 02:53:50,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 02:53:50,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 02:53:50,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 02:53:50,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 02:53:50,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 02:53:50,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 02:53:50,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 02:53:50,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 02:53:50,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 02:53:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 02:53:50,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 02:53:50,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 02:53:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 02:53:50,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 02:53:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 02:53:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 02:53:50,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 02:53:50,607 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 02:53:50,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:50 BoogieIcfgContainer [2021-10-29 02:53:50,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 02:53:50,611 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 02:53:50,612 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 02:53:50,639 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 02:53:50,639 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:50" (1/1) ... [2021-10-29 02:53:50,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 02:53:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2021-10-29 02:53:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-10-29 02:53:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 02:53:50,714 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:50,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:50,879 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 02:53:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2021-10-29 02:53:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-29 02:53:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 02:53:50,935 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:50,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 02:53:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 10 states and 14 transitions. [2021-10-29 02:53:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2021-10-29 02:53:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 02:53:51,164 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:51,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 02:53:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 11 states and 16 transitions. [2021-10-29 02:53:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 16 transitions. [2021-10-29 02:53:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 02:53:51,466 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:51,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 02:53:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 12 states and 18 transitions. [2021-10-29 02:53:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 18 transitions. [2021-10-29 02:53:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 02:53:51,813 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:51,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 02:53:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 9 states and 13 transitions. [2021-10-29 02:53:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 13 transitions. [2021-10-29 02:53:52,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 02:53:52,289 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2021-10-29 02:53:52,297 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-29 02:53:52,387 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-29 02:53:52,392 INFO L565 CodeCheckObserver]: Invariant with dag size 22 [2021-10-29 02:53:52,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 02:53:52 ImpRootNode [2021-10-29 02:53:52,401 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 02:53:52,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 02:53:52,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 02:53:52,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 02:53:52,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:50" (3/4) ... [2021-10-29 02:53:52,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 02:53:52,416 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-29 02:53:52,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 02:53:52,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 02:53:52,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 02:53:52,472 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 02:53:52,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 02:53:52,474 INFO L168 Benchmark]: Toolchain (without parser) took 2698.75 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.4 MB in the beginning and 66.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,475 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 02:53:52,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.2 MB in the beginning and 82.9 MB in the end (delta: -33.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,476 INFO L168 Benchmark]: Boogie Preprocessor took 38.40 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 80.4 MB in the end (delta: 972.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 02:53:52,477 INFO L168 Benchmark]: RCFGBuilder took 460.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 69.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,477 INFO L168 Benchmark]: CodeCheck took 1789.68 ms. Allocated memory is still 107.0 MB. Free memory was 69.5 MB in the beginning and 68.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,478 INFO L168 Benchmark]: Witness Printer took 71.13 ms. Allocated memory is still 107.0 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:52,481 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 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, 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: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 416 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 216 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((len <= 3 && 2 < len) || (3 < len && len <= 4)) || (len <= 2 && 1 < len)) || (len <= 1 && 0 < len / 4294967296 + 1) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.62 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.2 MB in the beginning and 82.9 MB in the end (delta: -33.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.40 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 80.4 MB in the end (delta: 972.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 460.50 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 69.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 1789.68 ms. Allocated memory is still 107.0 MB. Free memory was 69.5 MB in the beginning and 68.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 71.13 ms. Allocated memory is still 107.0 MB. Free memory was 68.4 MB in the beginning and 66.3 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 correct! [2021-10-29 02:53:52,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6c0e30-0a52-48f8-a1fa-bc0414d5b7fc/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...