./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak --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 61245002f662171c4f63dbacefaa0e216ea9fe3a .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:02:11,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:02:11,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:02:11,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:02:11,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:02:11,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:02:11,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:02:11,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:02:11,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:02:11,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:02:11,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:02:11,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:02:11,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:02:11,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:02:11,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:02:11,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:02:11,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:02:11,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:02:11,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:02:11,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:02:11,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:02:11,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:02:11,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:02:11,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:02:11,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:02:11,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:02:11,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:02:11,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:02:11,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:02:11,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:02:11,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:02:11,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:02:11,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:02:11,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:02:11,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:02:11,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:02:11,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:02:11,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:02:11,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:02:11,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:02:11,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:02:11,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:02:11,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:02:11,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:02:11,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:02:11,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:02:11,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:02:11,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:02:11,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:02:11,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:02:11,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:02:11,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:02:11,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:02:11,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:02:11,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:02:11,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:02:11,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:02:11,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:02:11,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:02:11,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:02:11,893 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:02:11,894 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:02:11,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:02:11,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:02:11,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:02:11,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:02:11,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:02:11,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:02:11,896 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:02:11,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:02:11,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:02:11,899 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-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61245002f662171c4f63dbacefaa0e216ea9fe3a [2020-12-01 17:02:12,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:02:12,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:02:12,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:02:12,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:02:12,399 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:02:12,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-12-01 17:02:12,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/data/a4921bf6d/00d914c43c06455cb4bc1ec353915a7f/FLAG33bbb0673 [2020-12-01 17:02:13,231 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:02:13,235 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-12-01 17:02:13,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/data/a4921bf6d/00d914c43c06455cb4bc1ec353915a7f/FLAG33bbb0673 [2020-12-01 17:02:13,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/data/a4921bf6d/00d914c43c06455cb4bc1ec353915a7f [2020-12-01 17:02:13,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:02:13,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:02:13,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:02:13,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:02:13,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:02:13,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:13,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da8b8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13, skipping insertion in model container [2020-12-01 17:02:13,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:13,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:02:13,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:02:13,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:02:13,878 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:02:13,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:02:13,926 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:02:13,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13 WrapperNode [2020-12-01 17:02:13,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:02:13,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:02:13,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:02:13,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:02:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:13,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:13,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:02:13,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:02:13,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:02:13,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:02:13,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:13,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... [2020-12-01 17:02:14,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:02:14,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:02:14,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:02:14,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:02:14,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:02:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:02:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:02:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-12-01 17:02:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-12-01 17:02:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:02:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-12-01 17:02:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-12-01 17:02:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:02:14,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:02:14,480 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:02:14,494 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 17:02:14,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:02:14 BoogieIcfgContainer [2020-12-01 17:02:14,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:02:14,497 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:02:14,498 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:02:14,509 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:02:14,522 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:02:14" (1/1) ... [2020-12-01 17:02:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:02:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2020-12-01 17:02:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-01 17:02:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:02:14,600 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:02:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 37 transitions. [2020-12-01 17:02:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2020-12-01 17:02:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 17:02:15,020 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:02:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 41 transitions. [2020-12-01 17:02:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2020-12-01 17:02:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:02:15,369 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:02:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 32 states and 45 transitions. [2020-12-01 17:02:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2020-12-01 17:02:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:02:16,091 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:02:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 59 transitions. [2020-12-01 17:02:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2020-12-01 17:02:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 17:02:16,819 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-01 17:02:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 58 transitions. [2020-12-01 17:02:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 58 transitions. [2020-12-01 17:02:17,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-01 17:02:17,220 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-01 17:02:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 39 states and 55 transitions. [2020-12-01 17:02:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-12-01 17:02:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 17:02:18,223 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-01 17:02:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 49 states and 74 transitions. [2020-12-01 17:02:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2020-12-01 17:02:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-01 17:02:19,339 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-01 17:02:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 49 states and 73 transitions. [2020-12-01 17:02:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 73 transitions. [2020-12-01 17:02:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 17:02:19,615 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-01 17:02:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 52 states and 79 transitions. [2020-12-01 17:02:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 79 transitions. [2020-12-01 17:02:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-01 17:02:21,639 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-01 17:02:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 62 states and 100 transitions. [2020-12-01 17:02:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 100 transitions. [2020-12-01 17:02:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-01 17:02:23,168 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 196 proven. 76 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2020-12-01 17:02:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 62 states and 84 transitions. [2020-12-01 17:02:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2020-12-01 17:02:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-01 17:02:25,604 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 91 proven. 74 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-12-01 17:02:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 67 states and 92 transitions. [2020-12-01 17:02:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-12-01 17:02:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 17:02:26,709 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-12-01 17:02:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 82 states and 128 transitions. [2020-12-01 17:02:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-12-01 17:02:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-01 17:02:43,182 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-12-01 17:02:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 82 states and 127 transitions. [2020-12-01 17:02:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 127 transitions. [2020-12-01 17:02:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-01 17:02:43,929 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:02:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:02:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 61 proven. 80 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-12-01 17:02:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:02:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 67 states and 93 transitions. [2020-12-01 17:02:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2020-12-01 17:02:45,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 17:02:45,449 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 16 iterations. [2020-12-01 17:02:45,457 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-12-01 17:02:45,863 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:02:45,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:02:45 ImpRootNode [2020-12-01 17:02:45,869 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:02:45,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:02:45,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:02:45,872 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:02:45,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:02:14" (3/4) ... [2020-12-01 17:02:45,878 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 17:02:45,885 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2020-12-01 17:02:45,894 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2020-12-01 17:02:45,903 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-01 17:02:45,905 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 17:02:45,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 17:02:45,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 17:02:45,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_64a4b6d0-827d-483e-878a-65e8c67d10d3/bin/ukojak/witness.graphml [2020-12-01 17:02:45,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:02:45,982 INFO L168 Benchmark]: Toolchain (without parser) took 32400.44 ms. Allocated memory was 92.3 MB in the beginning and 408.9 MB in the end (delta: 316.7 MB). Free memory was 63.8 MB in the beginning and 352.1 MB in the end (delta: -288.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,982 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:02:45,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.63 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 69.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.27 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:02:45,985 INFO L168 Benchmark]: Boogie Preprocessor took 48.77 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 926.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,985 INFO L168 Benchmark]: RCFGBuilder took 470.34 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 52.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,986 INFO L168 Benchmark]: CodeCheck took 31371.64 ms. Allocated memory was 92.3 MB in the beginning and 408.9 MB in the end (delta: 316.7 MB). Free memory was 52.3 MB in the beginning and 355.2 MB in the end (delta: -302.9 MB). Peak memory consumption was 233.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,987 INFO L168 Benchmark]: Witness Printer took 110.10 ms. Allocated memory is still 408.9 MB. Free memory was 355.2 MB in the beginning and 352.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:02:45,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.8s, OverallIterations: 16, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 330320 SDtfs, 215504 SDslu, 345856 SDs, 0 SdLazy, 1084344 SolverSat, 271256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7890 GetRequests, 7408 SyntacticMatches, 186 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39298 ImplicationChecksByTransitivity, 26.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 1039 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1024 ConstructedInterpolants, 0 QuantifiedInterpolants, 208762 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 2678/3124 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.63 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 69.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.27 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.77 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 926.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 470.34 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 52.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 31371.64 ms. Allocated memory was 92.3 MB in the beginning and 408.9 MB in the end (delta: 316.7 MB). Free memory was 52.3 MB in the beginning and 355.2 MB in the end (delta: -302.9 MB). Peak memory consumption was 233.4 MB. Max. memory is 16.1 GB. * Witness Printer took 110.10 ms. Allocated memory is still 408.9 MB. Free memory was 355.2 MB in the beginning and 352.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...