./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfdde8b1798318c3bb26b76a748741913b280952 ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:56:20,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:56:20,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:56:20,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:56:20,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:56:20,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:56:20,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:56:20,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:56:20,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:56:20,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:56:20,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:56:20,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:56:20,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:56:20,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:56:20,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:56:20,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:56:20,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:56:20,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:56:20,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:56:20,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:56:20,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:56:20,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:56:20,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:56:20,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:56:20,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:56:20,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:56:20,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:56:20,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:56:20,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:56:20,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:56:20,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:56:20,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:56:20,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:56:20,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:56:20,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:56:20,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:56:20,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:56:20,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:56:20,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:56:20,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:56:20,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:56:20,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-26 02:56:20,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:56:20,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:56:20,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:56:20,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-26 02:56:20,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:56:20,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:56:20,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:56:20,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:56:20,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:56:20,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:56:20,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:56:20,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:56:20,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:56:20,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:56:20,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:56:20,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:56:20,709 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:56:20,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:56:20,709 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-26 02:56:20,709 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-26 02:56:20,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:56:20,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:56:20,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-26 02:56:20,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:56:20,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:56:20,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:56:20,711 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-26 02:56:20,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:56:20,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:56:20,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/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(__VERIFIER_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 -> cfdde8b1798318c3bb26b76a748741913b280952 [2019-11-26 02:56:20,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:56:20,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:56:20,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:56:20,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:56:20,881 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:56:20,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-26 02:56:20,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/data/9bcd52520/00a9a8dbc99448159f19c0a92b87d076/FLAGdd7e1efe5 [2019-11-26 02:56:21,424 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:56:21,425 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-26 02:56:21,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/data/9bcd52520/00a9a8dbc99448159f19c0a92b87d076/FLAGdd7e1efe5 [2019-11-26 02:56:21,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/data/9bcd52520/00a9a8dbc99448159f19c0a92b87d076 [2019-11-26 02:56:21,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:56:21,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:56:21,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:56:21,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:56:21,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:56:21,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:56:21" (1/1) ... [2019-11-26 02:56:21,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659fc26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:21, skipping insertion in model container [2019-11-26 02:56:21,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:56:21" (1/1) ... [2019-11-26 02:56:21,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:56:21,785 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:56:22,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:56:22,196 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:56:22,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:56:22,297 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:56:22,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22 WrapperNode [2019-11-26 02:56:22,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:56:22,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:56:22,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:56:22,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:56:22,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:56:22,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:56:22,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:56:22,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:56:22,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... [2019-11-26 02:56:22,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:56:22,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:56:22,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:56:22,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:56:22,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/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 [2019-11-26 02:56:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-26 02:56:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-26 02:56:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:56:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:56:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:56:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:56:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:56:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:56:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:56:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:56:22,715 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-26 02:56:23,060 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:56:23,061 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-26 02:56:23,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:23 BoogieIcfgContainer [2019-11-26 02:56:23,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:56:23,063 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-26 02:56:23,063 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-26 02:56:23,079 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-26 02:56:23,080 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:23" (1/1) ... [2019-11-26 02:56:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:56:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2019-11-26 02:56:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2019-11-26 02:56:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:56:23,140 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:56:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 19 states and 28 transitions. [2019-11-26 02:56:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2019-11-26 02:56:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:56:23,377 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:56:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 20 states and 30 transitions. [2019-11-26 02:56:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2019-11-26 02:56:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:56:23,572 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:56:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 23 states and 36 transitions. [2019-11-26 02:56:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2019-11-26 02:56:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:56:23,879 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:56:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 24 states and 37 transitions. [2019-11-26 02:56:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-11-26 02:56:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:56:24,035 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:56:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 31 states and 49 transitions. [2019-11-26 02:56:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2019-11-26 02:56:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:56:24,808 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:56:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 32 states and 50 transitions. [2019-11-26 02:56:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2019-11-26 02:56:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:56:25,009 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:56:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 34 states and 52 transitions. [2019-11-26 02:56:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2019-11-26 02:56:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:56:25,529 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-26 02:56:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 38 states and 56 transitions. [2019-11-26 02:56:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 56 transitions. [2019-11-26 02:56:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 02:56:26,433 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-26 02:56:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:56:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-26 02:56:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2019-11-26 02:56:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-11-26 02:56:27,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:56:27,734 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2019-11-26 02:56:27,745 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2019-11-26 02:56:27,879 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-26 02:56:27,883 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-26 02:56:27,884 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2019-11-26 02:56:27,887 INFO L569 CodeCheckObserver]: Invariant with dag size 18 [2019-11-26 02:56:27,892 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2019-11-26 02:56:27,892 INFO L569 CodeCheckObserver]: Invariant with dag size 13 [2019-11-26 02:56:27,896 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-26 02:56:27,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.11 02:56:27 ImpRootNode [2019-11-26 02:56:27,896 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-26 02:56:27,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:56:27,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:56:27,897 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:56:27,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:23" (3/4) ... [2019-11-26 02:56:27,901 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:56:27,908 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2019-11-26 02:56:27,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2019-11-26 02:56:27,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-11-26 02:56:27,916 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:56:28,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_31aaa05e-3ec3-4ad0-9551-291ad25e7c4b/bin/ukojak/witness.graphml [2019-11-26 02:56:28,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:56:28,009 INFO L168 Benchmark]: Toolchain (without parser) took 6280.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 944.8 MB in the beginning and 1.0 GB in the end (delta: -80.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,009 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:56:28,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,012 INFO L168 Benchmark]: Boogie Preprocessor took 46.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:56:28,012 INFO L168 Benchmark]: RCFGBuilder took 674.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,013 INFO L168 Benchmark]: CodeCheck took 4833.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.8 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,013 INFO L168 Benchmark]: Witness Printer took 109.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:28,016 INFO L335 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, 18 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3208 SDtfs, 1244 SDslu, 1040 SDs, 0 SdLazy, 7908 SolverSat, 2664 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1064 GetRequests, 918 SyntacticMatches, 38 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4926 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 18/55 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: 630]: 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: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 <= i - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: (((2 == len && len == len) || (1 <= len && len + 2 <= len)) || (2 <= len && len < 1)) || (len + 1 <= len && 2 == len) - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: (2 <= len && index + 1 <= 2 * i) || (2 <= len && index < 1) - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 568.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 674.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * CodeCheck took 4833.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 45.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.8 MB). Peak memory consumption was 92.4 MB. Max. memory is 11.5 GB. * Witness Printer took 109.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...