./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ --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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 00:40:42,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:40:42,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:40:42,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:40:42,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:40:42,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:40:42,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:40:42,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:40:42,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:40:42,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:40:42,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:40:42,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:40:42,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:40:42,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:40:42,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:40:42,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:40:42,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:40:42,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:40:42,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:40:42,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:40:42,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:40:42,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:40:42,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:40:42,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:40:42,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:40:42,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:40:42,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:40:42,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:40:42,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:40:42,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:40:42,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:40:42,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:40:42,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:40:42,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:40:42,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:40:42,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:40:42,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:40:42,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:40:42,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:40:42,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:40:42,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:40:42,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 00:40:42,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:40:42,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:40:42,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 00:40:42,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 00:40:42,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:40:42,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:40:42,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:40:42,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 00:40:42,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:40:42,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 00:40:42,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:40:42,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:40:42,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:40:42,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:40:42,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 00:40:42,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:40:42,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:40:42,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:40:42,802 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 00:40:42,802 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 00:40:42,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:40:42,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:40:42,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:40:42,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:40:42,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:40:42,804 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 00:40:42,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:40:42,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:40:42,805 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_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2021-11-23 00:40:43,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:40:43,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:40:43,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:40:43,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:40:43,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:40:43,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2021-11-23 00:40:43,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/data/74935f322/aec8bf0872374be2b5c71c1c5a85a7aa/FLAGfbe32fac2 [2021-11-23 00:40:43,832 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:40:43,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2021-11-23 00:40:43,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/data/74935f322/aec8bf0872374be2b5c71c1c5a85a7aa/FLAGfbe32fac2 [2021-11-23 00:40:44,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/data/74935f322/aec8bf0872374be2b5c71c1c5a85a7aa [2021-11-23 00:40:44,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:40:44,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:40:44,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:40:44,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:40:44,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:40:44,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9d5447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44, skipping insertion in model container [2021-11-23 00:40:44,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:40:44,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:40:44,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2021-11-23 00:40:44,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:40:44,496 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:40:44,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2021-11-23 00:40:44,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:40:44,535 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:40:44,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44 WrapperNode [2021-11-23 00:40:44,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:40:44,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:40:44,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:40:44,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:40:44,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,578 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-23 00:40:44,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:40:44,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:40:44,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:40:44,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:40:44,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:40:44,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:40:44,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:40:44,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:40:44,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:40:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 00:40:44,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 00:40:44,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 00:40:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:40:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:40:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:40:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:40:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2021-11-23 00:40:44,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2021-11-23 00:40:44,784 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:40:44,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:40:44,947 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:40:44,960 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:40:44,964 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:40:44,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:44 BoogieIcfgContainer [2021-11-23 00:40:44,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:40:44,969 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 00:40:44,970 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 00:40:44,982 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 00:40:44,983 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:44" (1/1) ... [2021-11-23 00:40:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:40:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2021-11-23 00:40:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-23 00:40:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 00:40:45,104 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:45,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:40:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 25 transitions. [2021-11-23 00:40:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-23 00:40:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 00:40:45,444 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:45,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:40:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 21 states and 29 transitions. [2021-11-23 00:40:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-11-23 00:40:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 00:40:45,679 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:45,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 00:40:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 21 states and 28 transitions. [2021-11-23 00:40:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2021-11-23 00:40:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 00:40:46,007 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:46,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 00:40:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:46,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 26 states and 40 transitions. [2021-11-23 00:40:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 40 transitions. [2021-11-23 00:40:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 00:40:46,414 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:46,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 00:40:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 29 states and 47 transitions. [2021-11-23 00:40:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2021-11-23 00:40:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 00:40:47,259 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:47,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 00:40:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 34 states and 62 transitions. [2021-11-23 00:40:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 62 transitions. [2021-11-23 00:40:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 00:40:47,682 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:47,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 47 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 00:40:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 34 states and 61 transitions. [2021-11-23 00:40:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 61 transitions. [2021-11-23 00:40:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 00:40:48,280 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:48,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-23 00:40:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 39 states and 78 transitions. [2021-11-23 00:40:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 78 transitions. [2021-11-23 00:40:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 00:40:48,781 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:48,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 131 proven. 122 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-23 00:40:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 39 states and 77 transitions. [2021-11-23 00:40:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 77 transitions. [2021-11-23 00:40:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 00:40:49,239 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:49,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 69 proven. 421 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2021-11-23 00:40:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 44 states and 96 transitions. [2021-11-23 00:40:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-11-23 00:40:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-11-23 00:40:49,758 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:49,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6077 backedges. 183 proven. 1173 refuted. 0 times theorem prover too weak. 4721 trivial. 0 not checked. [2021-11-23 00:40:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 49 states and 118 transitions. [2021-11-23 00:40:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 118 transitions. [2021-11-23 00:40:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-23 00:40:50,395 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:50,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9549 backedges. 496 proven. 1064 refuted. 0 times theorem prover too weak. 7989 trivial. 0 not checked. [2021-11-23 00:40:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 51 states and 87 transitions. [2021-11-23 00:40:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2021-11-23 00:40:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-23 00:40:51,824 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:51,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 332 proven. 495 refuted. 0 times theorem prover too weak. 4220 trivial. 0 not checked. [2021-11-23 00:40:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 51 states and 86 transitions. [2021-11-23 00:40:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 86 transitions. [2021-11-23 00:40:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 00:40:52,144 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:52,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10947 backedges. 621 proven. 1059 refuted. 0 times theorem prover too weak. 9267 trivial. 0 not checked. [2021-11-23 00:40:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:40:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 51 states and 82 transitions. [2021-11-23 00:40:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 82 transitions. [2021-11-23 00:40:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-23 00:40:52,690 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:40:52,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:40:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:40:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2021-11-23 00:41:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 76 states and 197 transitions. [2021-11-23 00:41:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 197 transitions. [2021-11-23 00:41:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-23 00:41:02,208 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:41:02,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:41:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:41:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 541 proven. 537 refuted. 0 times theorem prover too weak. 2252 trivial. 0 not checked. [2021-11-23 00:41:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 71 states and 138 transitions. [2021-11-23 00:41:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 138 transitions. [2021-11-23 00:41:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-23 00:41:03,349 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:41:03,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:41:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:41:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 848 proven. 252 refuted. 0 times theorem prover too weak. 3947 trivial. 0 not checked. [2021-11-23 00:41:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 71 states and 130 transitions. [2021-11-23 00:41:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2021-11-23 00:41:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-23 00:41:04,229 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:41:04,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:41:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:41:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 349 proven. 941 refuted. 0 times theorem prover too weak. 3757 trivial. 0 not checked. [2021-11-23 00:41:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 56 states and 72 transitions. [2021-11-23 00:41:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-11-23 00:41:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-23 00:41:04,776 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:41:04,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:41:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:41:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 463 proven. 465 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2021-11-23 00:41:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 56 states and 71 transitions. [2021-11-23 00:41:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-11-23 00:41:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-23 00:41:05,327 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:41:05,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:41:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:41:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 517 proven. 138 refuted. 0 times theorem prover too weak. 2647 trivial. 0 not checked. [2021-11-23 00:41:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:41:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 49 states and 62 transitions. [2021-11-23 00:41:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2021-11-23 00:41:05,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 00:41:05,771 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 21 iterations. [2021-11-23 00:41:05,780 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-23 00:41:06,019 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 00:41:06,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:41:06 ImpRootNode [2021-11-23 00:41:06,024 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 00:41:06,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 00:41:06,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 00:41:06,025 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 00:41:06,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:40:44" (3/4) ... [2021-11-23 00:41:06,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 00:41:06,035 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2021-11-23 00:41:06,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 00:41:06,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 00:41:06,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 00:41:06,042 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 00:41:06,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 00:41:06,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 00:41:06,095 INFO L158 Benchmark]: Toolchain (without parser) took 21891.00ms. Allocated memory was 79.7MB in the beginning and 178.3MB in the end (delta: 98.6MB). Free memory was 43.6MB in the beginning and 49.6MB in the end (delta: -6.0MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,096 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 79.7MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:41:06,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.52ms. Allocated memory was 79.7MB in the beginning and 121.6MB in the end (delta: 41.9MB). Free memory was 43.4MB in the beginning and 98.4MB in the end (delta: -55.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.28ms. Allocated memory is still 121.6MB. Free memory was 98.4MB in the beginning and 96.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,102 INFO L158 Benchmark]: Boogie Preprocessor took 25.70ms. Allocated memory is still 121.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 879.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:41:06,103 INFO L158 Benchmark]: RCFGBuilder took 361.90ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 87.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,104 INFO L158 Benchmark]: CodeCheck took 21054.59ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 86.8MB in the beginning and 51.7MB in the end (delta: 35.1MB). Peak memory consumption was 93.7MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,104 INFO L158 Benchmark]: Witness Printer took 69.90ms. Allocated memory is still 178.3MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 00:41:06,108 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.8s, OverallIterations: 21, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3013 SdHoareTripleChecker+Valid, 19.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1135 mSDsluCounter, 2546 SdHoareTripleChecker+Invalid, 15.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1702 mSDsCounter, 3194 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10893 IncrementalHoareTripleChecker+Invalid, 14087 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3194 mSolverCounterUnsat, 844 mSDtfsCounter, 10893 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16089 GetRequests, 15313 SyntacticMatches, 506 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38672 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 3544 NumberOfCodeBlocks, 3544 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3524 ConstructedInterpolants, 0 QuantifiedInterpolants, 5419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 49480/57843 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: 29]: 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: 28]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 79.7MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.52ms. Allocated memory was 79.7MB in the beginning and 121.6MB in the end (delta: 41.9MB). Free memory was 43.4MB in the beginning and 98.4MB in the end (delta: -55.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.28ms. Allocated memory is still 121.6MB. Free memory was 98.4MB in the beginning and 96.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.70ms. Allocated memory is still 121.6MB. Free memory was 96.9MB in the beginning and 96.0MB in the end (delta: 879.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.90ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 87.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 21054.59ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 86.8MB in the beginning and 51.7MB in the end (delta: 35.1MB). Peak memory consumption was 93.7MB. Max. memory is 16.1GB. * Witness Printer took 69.90ms. Allocated memory is still 178.3MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 00:41:06,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc4b0274-32bd-416d-8656-4f812a18414b/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE