./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.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_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/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_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/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_069775bb-5497-4dbf-8e35-1707bedaccb3/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 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c ................................................................................................................................................................................................................................ 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 02:53:52,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 02:53:52,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 02:53:52,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 02:53:52,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 02:53:52,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 02:53:52,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 02:53:52,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 02:53:52,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 02:53:52,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 02:53:52,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 02:53:52,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 02:53:52,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 02:53:52,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 02:53:52,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 02:53:52,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 02:53:52,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 02:53:52,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 02:53:52,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 02:53:52,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 02:53:52,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 02:53:52,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 02:53:52,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 02:53:52,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 02:53:52,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 02:53:52,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 02:53:52,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 02:53:52,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 02:53:52,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 02:53:52,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 02:53:52,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 02:53:52,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 02:53:52,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 02:53:52,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 02:53:52,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 02:53:52,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 02:53:52,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 02:53:52,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 02:53:52,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 02:53:52,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 02:53:52,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 02:53:52,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 02:53:52,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 02:53:52,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 02:53:52,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 02:53:52,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 02:53:52,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 02:53:52,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 02:53:52,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 02:53:52,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 02:53:52,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 02:53:52,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 02:53:52,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 02:53:52,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 02:53:52,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 02:53:52,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 02:53:52,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 02:53:52,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 02:53:52,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 02:53:52,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 02:53:52,182 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 02:53:52,182 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 02:53:52,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 02:53:52,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 02:53:52,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 02:53:52,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 02:53:52,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 02:53:52,184 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 02:53:52,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 02:53:52,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 02:53:52,184 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_069775bb-5497-4dbf-8e35-1707bedaccb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5dd5c1c64cd1875ba800cc2db6d1da955f2d2f519c1964ff87558bc42b9b4c [2021-10-29 02:53:52,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 02:53:52,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 02:53:52,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 02:53:52,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 02:53:52,470 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 02:53:52,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2021-10-29 02:53:52,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/data/7d25f1084/6a9eb2e4fc3a4d78b219df480b34884b/FLAG1f192dc02 [2021-10-29 02:53:53,098 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 02:53:53,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/sv-benchmarks/c/recursive/McCarthy91-2.c [2021-10-29 02:53:53,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/data/7d25f1084/6a9eb2e4fc3a4d78b219df480b34884b/FLAG1f192dc02 [2021-10-29 02:53:53,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/data/7d25f1084/6a9eb2e4fc3a4d78b219df480b34884b [2021-10-29 02:53:53,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 02:53:53,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 02:53:53,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 02:53:53,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 02:53:53,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 02:53:53,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cffe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53, skipping insertion in model container [2021-10-29 02:53:53,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 02:53:53,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 02:53:53,715 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_069775bb-5497-4dbf-8e35-1707bedaccb3/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-10-29 02:53:53,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 02:53:53,728 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 02:53:53,742 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_069775bb-5497-4dbf-8e35-1707bedaccb3/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-10-29 02:53:53,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 02:53:53,757 INFO L208 MainTranslator]: Completed translation [2021-10-29 02:53:53,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53 WrapperNode [2021-10-29 02:53:53,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 02:53:53,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 02:53:53,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 02:53:53,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 02:53:53,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 02:53:53,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 02:53:53,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 02:53:53,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 02:53:53,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 02:53:53,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 02:53:53,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 02:53:53,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 02:53:53,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:53:53" (1/1) ... [2021-10-29 02:53:53,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 02:53:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 02:53:53,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 02:53:53,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 02:53:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 02:53:53,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 02:53:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 02:53:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 02:53:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-10-29 02:53:53,940 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-10-29 02:53:54,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 02:53:54,255 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 02:53:54,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:54 BoogieIcfgContainer [2021-10-29 02:53:54,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 02:53:54,259 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 02:53:54,259 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 02:53:54,283 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 02:53:54,283 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:54" (1/1) ... [2021-10-29 02:53:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 02:53:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 16 states and 19 transitions. [2021-10-29 02:53:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-29 02:53:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 02:53:54,335 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:54,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:54,633 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 02:53:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 20 states and 25 transitions. [2021-10-29 02:53:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-10-29 02:53:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 02:53:54,831 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 02:53:54,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 02:53:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 02:53:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 02:53:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 02:53:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 18 states and 23 transitions. [2021-10-29 02:53:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-10-29 02:53:56,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 02:53:56,143 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 3 iterations. [2021-10-29 02:53:56,149 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-29 02:53:56,217 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-29 02:53:56,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 02:53:56 ImpRootNode [2021-10-29 02:53:56,222 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 02:53:56,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 02:53:56,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 02:53:56,224 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 02:53:56,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:53:54" (3/4) ... [2021-10-29 02:53:56,228 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 02:53:56,235 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2021-10-29 02:53:56,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-29 02:53:56,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 02:53:56,240 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 02:53:56,241 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 02:53:56,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 02:53:56,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 02:53:56,280 INFO L168 Benchmark]: Toolchain (without parser) took 2791.60 ms. Allocated memory is still 121.6 MB. Free memory was 80.8 MB in the beginning and 67.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,280 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory was 96.6 MB in the beginning and 96.6 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 02:53:56,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.19 ms. Allocated memory is still 121.6 MB. Free memory was 80.4 MB in the beginning and 97.4 MB in the end (delta: -17.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,282 INFO L168 Benchmark]: Boogie Preprocessor took 39.05 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 95.2 MB in the end (delta: 837.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 02:53:56,283 INFO L168 Benchmark]: RCFGBuilder took 420.25 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 84.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,284 INFO L168 Benchmark]: CodeCheck took 1963.75 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 70.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,285 INFO L168 Benchmark]: Witness Printer took 55.00 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 67.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 02:53:56,288 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, 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: 26 SDtfs, 12 SDslu, 12 SDs, 0 SdLazy, 156 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 8/12 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: 32]: 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: 26]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory was 96.6 MB in the beginning and 96.6 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.19 ms. Allocated memory is still 121.6 MB. Free memory was 80.4 MB in the beginning and 97.4 MB in the end (delta: -17.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.05 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 95.2 MB in the end (delta: 837.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.25 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 84.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 1963.75 ms. Allocated memory is still 121.6 MB. Free memory was 84.8 MB in the beginning and 70.0 MB in the end (delta: 14.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.00 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 67.1 MB in the end (delta: 2.8 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 02:53:56,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_069775bb-5497-4dbf-8e35-1707bedaccb3/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...