./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/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-a4ecdab [2020-11-28 04:44:06,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:44:06,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:44:06,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:44:06,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:44:06,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:44:06,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:44:06,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:44:06,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:44:06,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:44:06,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:44:06,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:44:06,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:44:06,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:44:06,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:44:06,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:44:06,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:44:06,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:44:06,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:44:06,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:44:06,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:44:06,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:44:06,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:44:06,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:44:06,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:44:06,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:44:06,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:44:06,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:44:06,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:44:06,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:44:06,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:44:06,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:44:06,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:44:06,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:44:06,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:44:06,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:44:06,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:44:06,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:44:06,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:44:06,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:44:06,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:44:06,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:44:06,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:44:06,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:44:06,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:44:06,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:44:06,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:44:06,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:44:06,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:44:06,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:44:06,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:44:06,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:44:06,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:44:06,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:44:06,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:44:06,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:44:06,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:44:06,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:44:06,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:44:06,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:44:06,790 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:44:06,790 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:44:06,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:44:06,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:44:06,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:44:06,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:44:06,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:44:06,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:44:06,792 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:44:06,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:44:06,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:44:06,794 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_3e8c296a-31c3-48d0-bb2c-2d78628775ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 [2020-11-28 04:44:07,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:44:07,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:44:07,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:44:07,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:44:07,056 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:44:07,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-11-28 04:44:07,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/data/292ad5846/f6783ea2f28649cb93766372946f33b1/FLAG9fb35b2f9 [2020-11-28 04:44:07,655 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:44:07,659 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-11-28 04:44:07,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/data/292ad5846/f6783ea2f28649cb93766372946f33b1/FLAG9fb35b2f9 [2020-11-28 04:44:07,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/data/292ad5846/f6783ea2f28649cb93766372946f33b1 [2020-11-28 04:44:07,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:44:07,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:44:07,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:07,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:44:07,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:44:07,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:07" (1/1) ... [2020-11-28 04:44:07,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b5c32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:07, skipping insertion in model container [2020-11-28 04:44:07,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:07" (1/1) ... [2020-11-28 04:44:07,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:44:08,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:44:08,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:08,471 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:44:08,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:08,602 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:44:08,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08 WrapperNode [2020-11-28 04:44:08,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:08,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:08,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:44:08,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:44:08,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:08,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:44:08,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:44:08,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:44:08,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... [2020-11-28 04:44:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:44:08,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:44:08,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:44:08,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:44:08,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/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 [2020-11-28 04:44:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 04:44:08,814 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 04:44:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:44:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:44:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:44:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:44:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:44:09,021 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 04:44:09,509 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:44:09,510 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 04:44:09,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:09 BoogieIcfgContainer [2020-11-28 04:44:09,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:44:09,516 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:44:09,516 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:44:09,527 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:44:09,527 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:09" (1/1) ... [2020-11-28 04:44:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:44:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2020-11-28 04:44:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2020-11-28 04:44:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:44:09,600 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-11-28 04:44:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-11-28 04:44:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 04:44:09,824 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 23 states and 31 transitions. [2020-11-28 04:44:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 04:44:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 04:44:10,135 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 04:44:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 31 states and 46 transitions. [2020-11-28 04:44:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2020-11-28 04:44:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:44:10,842 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 04:44:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 35 states and 54 transitions. [2020-11-28 04:44:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2020-11-28 04:44:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 04:44:11,216 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-28 04:44:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-11-28 04:44:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-11-28 04:44:11,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:44:11,439 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2020-11-28 04:44:11,446 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-28 04:44:11,529 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:44:11,533 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:44:11,534 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:44:11,538 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:44:11,541 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:44:11,542 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:44:11,542 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:44:11,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:44:11 ImpRootNode [2020-11-28 04:44:11,543 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:44:11,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:44:11,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:44:11,545 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:44:11,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:09" (3/4) ... [2020-11-28 04:44:11,548 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:44:11,552 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2020-11-28 04:44:11,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-28 04:44:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 04:44:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:44:11,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:44:11,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3e8c296a-31c3-48d0-bb2c-2d78628775ea/bin/ukojak/witness.graphml [2020-11-28 04:44:11,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:44:11,626 INFO L168 Benchmark]: Toolchain (without parser) took 3644.81 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 75.8 MB in the beginning and 93.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,627 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:11,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 66.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.28 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 64.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,629 INFO L168 Benchmark]: Boogie Preprocessor took 62.17 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,630 INFO L168 Benchmark]: RCFGBuilder took 765.95 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,630 INFO L168 Benchmark]: CodeCheck took 2026.62 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 59.8 MB in the beginning and 96.5 MB in the end (delta: -36.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:11,631 INFO L168 Benchmark]: Witness Printer took 80.48 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 93.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:11,635 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: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 272 SDtfs, 200 SDslu, 104 SDs, 0 SdLazy, 752 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 1783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 23/24 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: 1 <= i - 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 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 621.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 66.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.28 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 64.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.17 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 765.95 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 60.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * CodeCheck took 2026.62 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 59.8 MB in the beginning and 96.5 MB in the end (delta: -36.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.48 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 93.3 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...