./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/nec40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/nec40.c -s /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1154acb41caa49c0da18a0d5cc92ede9101ff854 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:27,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:27,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:27,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:27,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:27,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:27,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:27,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:27,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:27,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:27,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:27,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:27,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:27,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:27,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:27,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:27,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:27,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:27,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:27,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:27,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:27,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:27,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:27,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:27,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:27,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:27,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:27,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:27,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:27,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:27,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:27,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:27,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:27,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:27,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:27,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:27,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:27,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:27,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:27,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:27,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:27,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:27,448 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:27,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:27,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:27,449 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:27,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:27,449 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:27,449 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:27,450 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:27,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:27,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:27,450 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:27,450 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:27,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:27,451 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:27,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:27,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:27,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:27,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:27,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:27,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:27,454 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:27,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:27,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:27,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:27,454 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan 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 -> Taipan 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 -> 1154acb41caa49c0da18a0d5cc92ede9101ff854 [2019-10-22 11:23:27,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:27,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:27,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:27,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:27,496 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:27,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/../../sv-benchmarks/c/loops/nec40.c [2019-10-22 11:23:27,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/data/f7cd23f78/46b6b0ba7d204f78afc39f568aae9fc5/FLAG54823f8e0 [2019-10-22 11:23:27,919 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:27,920 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/sv-benchmarks/c/loops/nec40.c [2019-10-22 11:23:27,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/data/f7cd23f78/46b6b0ba7d204f78afc39f568aae9fc5/FLAG54823f8e0 [2019-10-22 11:23:27,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/data/f7cd23f78/46b6b0ba7d204f78afc39f568aae9fc5 [2019-10-22 11:23:27,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:27,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:27,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:27,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:27,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:27,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:27" (1/1) ... [2019-10-22 11:23:27,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76628b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:27, skipping insertion in model container [2019-10-22 11:23:27,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:27" (1/1) ... [2019-10-22 11:23:27,951 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:27,965 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:28,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:28,202 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:28,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:28,271 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:28,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28 WrapperNode [2019-10-22 11:23:28,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:28,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:28,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:28,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:28,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:28,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:28,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:28,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:28,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... [2019-10-22 11:23:28,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:28,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:28,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:28,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:28,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2019-10-22 11:23:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:23:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:23:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:28,718 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:28,718 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:23:28,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:28 BoogieIcfgContainer [2019-10-22 11:23:28,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:28,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:28,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:28,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:28,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:27" (1/3) ... [2019-10-22 11:23:28,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaf3e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:28, skipping insertion in model container [2019-10-22 11:23:28,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:28" (2/3) ... [2019-10-22 11:23:28,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaf3e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:28, skipping insertion in model container [2019-10-22 11:23:28,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:28" (3/3) ... [2019-10-22 11:23:28,726 INFO L109 eAbstractionObserver]: Analyzing ICFG nec40.c [2019-10-22 11:23:28,736 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:28,757 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:28,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:28,824 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:28,825 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:28,825 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:28,825 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:28,825 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:28,825 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:28,825 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:28,825 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:23:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:28,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:28,857 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:28,859 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:28,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 383725322, now seen corresponding path program 1 times [2019-10-22 11:23:28,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:28,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253589177] [2019-10-22 11:23:28,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:28,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253589177] [2019-10-22 11:23:29,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:29,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:29,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20376600] [2019-10-22 11:23:29,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:29,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:29,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:29,139 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 11:23:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,154 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-10-22 11:23:29,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:29,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-10-22 11:23:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,163 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:23:29,163 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:23:29,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:23:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:23:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:23:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-10-22 11:23:29,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-10-22 11:23:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,191 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-10-22 11:23:29,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-10-22 11:23:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:23:29,192 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:29,192 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:29,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1213354159, now seen corresponding path program 1 times [2019-10-22 11:23:29,193 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:29,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650315771] [2019-10-22 11:23:29,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650315771] [2019-10-22 11:23:29,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:29,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:29,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315008584] [2019-10-22 11:23:29,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:29,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:29,307 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2019-10-22 11:23:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,342 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-22 11:23:29,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:29,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 11:23:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,344 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:23:29,344 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 11:23:29,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 11:23:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 11:23:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 11:23:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-22 11:23:29,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-10-22 11:23:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,347 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-22 11:23:29,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-22 11:23:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:23:29,348 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:29,348 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:29,348 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1626878186, now seen corresponding path program 1 times [2019-10-22 11:23:29,349 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:29,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358676513] [2019-10-22 11:23:29,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:29,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:29,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358676513] [2019-10-22 11:23:29,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:29,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:29,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689722755] [2019-10-22 11:23:29,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:29,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:29,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:29,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:29,538 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-10-22 11:23:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:29,565 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-22 11:23:29,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:29,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 11:23:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:29,566 INFO L225 Difference]: With dead ends: 12 [2019-10-22 11:23:29,566 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:23:29,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:23:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:23:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:23:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:23:29,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-22 11:23:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:29,567 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:23:29,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:23:29,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:23:29,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:23:29,589 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:23:29,589 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:23:29,590 INFO L446 ceAbstractionStarter]: At program point L28(lines 14 29) the Hoare annotation is: true [2019-10-22 11:23:29,590 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-10-22 11:23:29,591 INFO L446 ceAbstractionStarter]: At program point L24-1(lines 24 26) the Hoare annotation is: true [2019-10-22 11:23:29,591 INFO L443 ceAbstractionStarter]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2019-10-22 11:23:29,591 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (= 0 ~i~0) (= 0 |~#x~0.offset|) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|))) [2019-10-22 11:23:29,591 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 21) no Hoare annotation was computed. [2019-10-22 11:23:29,591 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:23:29,600 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:23:29,605 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:23:29,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:29 BoogieIcfgContainer [2019-10-22 11:23:29,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:29,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:29,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:29,608 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:29,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:28" (3/4) ... [2019-10-22 11:23:29,615 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:23:29,626 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:23:29,627 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:23:29,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_500007d5-220c-4eb8-8385-c19fbb6c5b77/bin/utaipan/witness.graphml [2019-10-22 11:23:29,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:29,694 INFO L168 Benchmark]: Toolchain (without parser) took 1756.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -113.8 MB). Peak memory consumption was 61.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,694 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:29,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.4 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:29,695 INFO L168 Benchmark]: Boogie Preprocessor took 39.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,695 INFO L168 Benchmark]: RCFGBuilder took 353.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,695 INFO L168 Benchmark]: TraceAbstraction took 887.70 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: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,696 INFO L168 Benchmark]: Witness Printer took 83.95 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:29,697 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 944.4 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 353.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 887.70 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: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. * Witness Printer took 83.95 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 18]: Loop Invariant [2019-10-22 11:23:29,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 11:23:29,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (0 == i && 0 == x) && 0 == unknown-#memory_int-unknown[x][x] - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 597 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...