./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --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_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/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 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 ................................................................................................................................................................................................................................................................... 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 18:07:45,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:07:45,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:07:45,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:07:45,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:07:45,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:07:45,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:07:45,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:07:45,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:07:45,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:07:45,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:07:45,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:07:45,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:07:45,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:07:45,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:07:45,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:07:45,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:07:45,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:07:45,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:07:45,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:07:45,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:07:45,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:07:45,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:07:45,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:07:45,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:07:45,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:07:45,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:07:45,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:07:45,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:07:45,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:07:45,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:07:45,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:07:45,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:07:45,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:07:45,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:07:45,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:07:45,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:07:45,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:07:46,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:07:46,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:07:46,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:07:46,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:07:46,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:07:46,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:07:46,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:07:46,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:07:46,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:07:46,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:07:46,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:07:46,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:07:46,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:07:46,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:07:46,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:07:46,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:07:46,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:07:46,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:07:46,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:07:46,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:07:46,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:07:46,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:07:46,078 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:07:46,078 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:07:46,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:07:46,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:07:46,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:07:46,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:07:46,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:07:46,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:07:46,081 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:07:46,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:07:46,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:07:46,084 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_31fb20ce-2bdf-4f89-b56c-907559c5ef82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 [2020-12-01 18:07:46,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:07:46,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:07:46,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:07:46,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:07:46,533 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:07:46,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-12-01 18:07:46,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/data/c5471f23d/faab81d84aa94720b3ee2689cda24def/FLAGdf14e53a1 [2020-12-01 18:07:47,442 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:07:47,443 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-12-01 18:07:47,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/data/c5471f23d/faab81d84aa94720b3ee2689cda24def/FLAGdf14e53a1 [2020-12-01 18:07:47,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/data/c5471f23d/faab81d84aa94720b3ee2689cda24def [2020-12-01 18:07:47,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:07:47,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:07:47,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:07:47,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:07:47,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:07:47,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:07:47" (1/1) ... [2020-12-01 18:07:47,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e816dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:47, skipping insertion in model container [2020-12-01 18:07:47,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:07:47" (1/1) ... [2020-12-01 18:07:47,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:07:47,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:07:48,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:07:48,146 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:07:48,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:07:48,300 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:07:48,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48 WrapperNode [2020-12-01 18:07:48,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:07:48,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:07:48,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:07:48,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:07:48,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:07:48,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:07:48,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:07:48,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:07:48,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... [2020-12-01 18:07:48,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:07:48,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:07:48,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:07:48,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:07:48,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:07:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/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 18:07:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-12-01 18:07:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-12-01 18:07:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 18:07:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:07:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 18:07:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 18:07:48,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:07:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 18:07:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:07:48,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:07:48,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:07:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:07:48,854 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-12-01 18:07:49,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:07:49,568 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-01 18:07:49,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:07:49 BoogieIcfgContainer [2020-12-01 18:07:49,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:07:49,573 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:07:49,573 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:07:49,589 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:07:49,589 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:07:49" (1/1) ... [2020-12-01 18:07:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:07:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:07:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2020-12-01 18:07:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2020-12-01 18:07:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:07:49,677 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:07:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:07:49,920 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 18:07:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:07:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-12-01 18:07:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-01 18:07:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:07:50,023 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:07:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:07:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:07:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:07:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 22 states and 31 transitions. [2020-12-01 18:07:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-12-01 18:07:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 18:07:50,377 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:07:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:07:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-01 18:07:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:07:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2020-12-01 18:07:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-12-01 18:07:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 18:07:51,225 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:07:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:07:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-01 18:07:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:07:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2020-12-01 18:07:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-12-01 18:07:51,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 18:07:51,508 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2020-12-01 18:07:51,518 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-12-01 18:07:51,614 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:07:51,620 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:07:51,621 INFO L569 CodeCheckObserver]: Invariant with dag size 8 [2020-12-01 18:07:51,633 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 18:07:51,633 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 18:07:51,635 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 18:07:51,636 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 18:07:51,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:07:51 ImpRootNode [2020-12-01 18:07:51,640 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:07:51,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:07:51,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:07:51,643 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:07:51,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:07:49" (3/4) ... [2020-12-01 18:07:51,650 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 18:07:51,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2020-12-01 18:07:51,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-12-01 18:07:51,680 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-01 18:07:51,681 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:07:51,682 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:07:51,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_31fb20ce-2bdf-4f89-b56c-907559c5ef82/bin/ukojak/witness.graphml [2020-12-01 18:07:51,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:07:51,783 INFO L168 Benchmark]: Toolchain (without parser) took 4149.97 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 75.4 MB in the beginning and 96.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,784 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 83.9 MB. Free memory was 46.9 MB in the beginning and 46.8 MB in the end (delta: 66.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:07:51,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.27 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 63.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.73 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 61.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,786 INFO L168 Benchmark]: Boogie Preprocessor took 75.15 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,787 INFO L168 Benchmark]: RCFGBuilder took 1080.56 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 59.9 MB in the beginning and 89.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,792 INFO L168 Benchmark]: CodeCheck took 2068.56 ms. Allocated memory is still 130.0 MB. Free memory was 89.2 MB in the beginning and 99.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,793 INFO L168 Benchmark]: Witness Printer took 139.04 ms. Allocated memory is still 130.0 MB. Free memory was 99.6 MB in the beginning and 96.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:07:51,796 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, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 92 SDslu, 54 SDs, 0 SdLazy, 298 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 365 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 11/12 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: 12]: 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: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 633]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: len == 2 - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 83.9 MB. Free memory was 46.9 MB in the beginning and 46.8 MB in the end (delta: 66.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.27 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 63.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.73 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 61.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.15 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1080.56 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 59.9 MB in the beginning and 89.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * CodeCheck took 2068.56 ms. Allocated memory is still 130.0 MB. Free memory was 89.2 MB in the beginning and 99.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 139.04 ms. Allocated memory is still 130.0 MB. Free memory was 99.6 MB in the beginning and 96.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...