./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/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 0.1.24-678e011 [2019-11-20 04:23:30,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:23:30,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:23:30,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:23:30,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:23:30,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:23:30,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:23:30,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:23:30,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:23:30,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:23:30,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:23:30,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:23:30,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:23:30,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:23:30,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:23:30,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:23:30,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:23:30,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:23:30,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:23:30,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:23:30,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:23:30,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:23:30,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:23:30,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:23:30,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:23:30,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:23:30,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:23:30,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:23:30,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:23:30,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:23:30,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:23:30,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:23:30,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:23:30,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:23:30,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:23:30,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:23:30,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:23:30,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:23:30,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:23:30,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:23:30,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:23:30,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 04:23:30,713 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:23:30,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:23:30,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 04:23:30,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 04:23:30,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:23:30,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:23:30,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:23:30,716 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:23:30,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:23:30,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:23:30,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:23:30,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:23:30,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:23:30,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:23:30,717 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:23:30,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:23:30,717 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:23:30,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:23:30,718 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 04:23:30,718 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 04:23:30,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:23:30,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:23:30,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 04:23:30,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:23:30,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:23:30,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:23:30,720 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 04:23:30,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:23:30,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:23:30,720 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_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/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 [2019-11-20 04:23:30,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:23:30,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:23:30,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:23:30,896 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:23:30,896 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:23:30,897 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-20 04:23:30,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/data/2d7e3095b/f17eba8f0b4f4a669193f3606f3df4af/FLAG48ea6d172 [2019-11-20 04:23:31,485 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:23:31,490 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-11-20 04:23:31,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/data/2d7e3095b/f17eba8f0b4f4a669193f3606f3df4af/FLAG48ea6d172 [2019-11-20 04:23:31,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/data/2d7e3095b/f17eba8f0b4f4a669193f3606f3df4af [2019-11-20 04:23:31,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:23:31,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:23:31,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:23:31,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:23:31,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:23:31,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:23:31" (1/1) ... [2019-11-20 04:23:31,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304e6cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:31, skipping insertion in model container [2019-11-20 04:23:31,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:23:31" (1/1) ... [2019-11-20 04:23:31,741 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:23:31,794 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:23:32,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:23:32,255 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:23:32,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:23:32,371 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:23:32,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32 WrapperNode [2019-11-20 04:23:32,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:23:32,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:23:32,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:23:32,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:23:32,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:23:32,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:23:32,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:23:32,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:23:32,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... [2019-11-20 04:23:32,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:23:32,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:23:32,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:23:32,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:23:32,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:23:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/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 [2019-11-20 04:23:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 04:23:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 04:23:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 04:23:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 04:23:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 04:23:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 04:23:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 04:23:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:23:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:23:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:23:32,784 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 04:23:33,131 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:23:33,132 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 04:23:33,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:23:33 BoogieIcfgContainer [2019-11-20 04:23:33,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:23:33,133 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 04:23:33,134 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 04:23:33,144 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 04:23:33,144 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:23:33" (1/1) ... [2019-11-20 04:23:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:23:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2019-11-20 04:23:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2019-11-20 04:23:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:23:33,190 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:23:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 19 states and 28 transitions. [2019-11-20 04:23:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2019-11-20 04:23:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 04:23:33,516 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:23:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 20 states and 30 transitions. [2019-11-20 04:23:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2019-11-20 04:23:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 04:23:33,770 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:23:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 23 states and 36 transitions. [2019-11-20 04:23:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2019-11-20 04:23:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 04:23:34,129 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:23:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 24 states and 37 transitions. [2019-11-20 04:23:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-11-20 04:23:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 04:23:34,336 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:23:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 31 states and 49 transitions. [2019-11-20 04:23:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2019-11-20 04:23:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 04:23:35,136 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:23:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 32 states and 50 transitions. [2019-11-20 04:23:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2019-11-20 04:23:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 04:23:35,329 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:23:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 34 states and 52 transitions. [2019-11-20 04:23:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2019-11-20 04:23:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 04:23:35,945 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 04:23:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 38 states and 56 transitions. [2019-11-20 04:23:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 56 transitions. [2019-11-20 04:23:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 04:23:36,877 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:23:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:23:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:23:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:23:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2019-11-20 04:23:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-11-20 04:23:38,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:23:38,259 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2019-11-20 04:23:38,268 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2019-11-20 04:23:38,429 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-20 04:23:38,434 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-20 04:23:38,434 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2019-11-20 04:23:38,438 INFO L569 CodeCheckObserver]: Invariant with dag size 18 [2019-11-20 04:23:38,440 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2019-11-20 04:23:38,441 INFO L569 CodeCheckObserver]: Invariant with dag size 13 [2019-11-20 04:23:38,442 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-20 04:23:38,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 04:23:38 ImpRootNode [2019-11-20 04:23:38,443 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 04:23:38,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:23:38,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:23:38,444 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:23:38,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:23:33" (3/4) ... [2019-11-20 04:23:38,448 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:23:38,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2019-11-20 04:23:38,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2019-11-20 04:23:38,461 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-11-20 04:23:38,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 04:23:38,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2e15dc3e-419a-4a38-ac37-fadb4359ce4a/bin/ukojak/witness.graphml [2019-11-20 04:23:38,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:23:38,563 INFO L168 Benchmark]: Toolchain (without parser) took 6838.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 940.8 MB in the beginning and 1.0 GB in the end (delta: -79.0 MB). Peak memory consumption was 108.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:23:38,564 INFO L168 Benchmark]: CDTParser took 0.21 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. [2019-11-20 04:23:38,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:23:38,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.22 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. [2019-11-20 04:23:38,566 INFO L168 Benchmark]: Boogie Preprocessor took 35.40 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. [2019-11-20 04:23:38,566 INFO L168 Benchmark]: RCFGBuilder took 675.61 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. [2019-11-20 04:23:38,567 INFO L168 Benchmark]: CodeCheck took 5309.39 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: 47.3 MB). Peak memory consumption was 92.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:23:38,568 INFO L168 Benchmark]: Witness Printer took 117.62 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:23:38,571 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: 5.0s, 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, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s 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 < 1) || (len + 1 <= len && 2 == len)) || (2 == len && len == len)) || (1 <= len && 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 <= len && index + 1 <= 2 * i) - 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 0.21 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 646.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.22 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 35.40 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 675.61 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 5309.39 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: 47.3 MB). Peak memory consumption was 92.9 MB. Max. memory is 11.5 GB. * Witness Printer took 117.62 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...