./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/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 0449565d36be00deee168302da89fb227fc941e3 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:14:59,478 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:14:59,479 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:14:59,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:14:59,487 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:14:59,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:14:59,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:14:59,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:14:59,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:14:59,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:14:59,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:14:59,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:14:59,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:14:59,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:14:59,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:14:59,494 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:14:59,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:14:59,496 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:14:59,497 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:14:59,498 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:14:59,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:14:59,499 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:14:59,500 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:14:59,500 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:14:59,500 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:14:59,501 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:14:59,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:14:59,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:14:59,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:14:59,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:14:59,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:14:59,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:14:59,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:14:59,505 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:14:59,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:14:59,506 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:14:59,506 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 11:14:59,517 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:14:59,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:14:59,518 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:14:59,518 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:14:59,519 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:14:59,519 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:14:59,519 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:14:59,519 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:14:59,519 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:14:59,519 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:14:59,520 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:14:59,520 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:14:59,520 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:14:59,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:14:59,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:14:59,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:14:59,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:14:59,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:14:59,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:14:59,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:14:59,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:14:59,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:14:59,525 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:14:59,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:14:59,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:14:59,526 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:14:59,526 INFO L133 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_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/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 -> 0449565d36be00deee168302da89fb227fc941e3 [2018-11-18 11:14:59,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:14:59,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:14:59,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:14:59,563 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:14:59,563 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:14:59,564 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 11:14:59,599 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/data/bd9a0f953/e26219ced1ff4cc19db11ec49e5037c2/FLAGd625913c9 [2018-11-18 11:14:59,930 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:14:59,931 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 11:14:59,935 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/data/bd9a0f953/e26219ced1ff4cc19db11ec49e5037c2/FLAGd625913c9 [2018-11-18 11:15:00,362 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/data/bd9a0f953/e26219ced1ff4cc19db11ec49e5037c2 [2018-11-18 11:15:00,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:15:00,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:15:00,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:15:00,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:15:00,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:15:00,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f418ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00, skipping insertion in model container [2018-11-18 11:15:00,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:15:00,387 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:15:00,518 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:15:00,521 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:15:00,529 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:15:00,540 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:15:00,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00 WrapperNode [2018-11-18 11:15:00,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:15:00,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:15:00,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:15:00,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:15:00,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:15:00,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:15:00,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:15:00,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:15:00,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... [2018-11-18 11:15:00,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:15:00,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:15:00,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:15:00,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:15:00,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/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 [2018-11-18 11:15:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:15:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:15:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:15:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:15:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:15:00,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:15:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-18 11:15:00,642 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-18 11:15:00,736 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:15:00,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:15:00 BoogieIcfgContainer [2018-11-18 11:15:00,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:15:00,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:15:00,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:15:00,740 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:15:00,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:15:00" (1/3) ... [2018-11-18 11:15:00,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b077a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:15:00, skipping insertion in model container [2018-11-18 11:15:00,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:15:00" (2/3) ... [2018-11-18 11:15:00,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b077a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:15:00, skipping insertion in model container [2018-11-18 11:15:00,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:15:00" (3/3) ... [2018-11-18 11:15:00,742 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-18 11:15:00,748 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:15:00,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:15:00,761 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:15:00,780 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:15:00,780 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:15:00,780 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:15:00,780 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:15:00,780 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:15:00,781 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:15:00,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:15:00,781 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:15:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 11:15:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:15:00,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:15:00,795 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:15:00,797 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:15:00,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2018-11-18 11:15:00,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:15:00,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:00,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:00,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:00,837 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:15:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:15:00,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:15:00,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:15:00,920 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:15:00,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:15:00,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:15:00,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:00,933 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-11-18 11:15:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:15:00,970 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 11:15:00,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:15:00,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 11:15:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:15:00,978 INFO L225 Difference]: With dead ends: 33 [2018-11-18 11:15:00,978 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 11:15:00,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 11:15:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 11:15:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 11:15:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 11:15:01,013 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2018-11-18 11:15:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:15:01,014 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 11:15:01,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:15:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 11:15:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 11:15:01,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:15:01,015 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:15:01,016 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:15:01,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:01,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2018-11-18 11:15:01,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:15:01,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:01,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,017 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:15:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:15:01,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:15:01,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:15:01,072 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:15:01,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:15:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:15:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:01,074 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-11-18 11:15:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:15:01,089 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-18 11:15:01,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:15:01,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-18 11:15:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:15:01,091 INFO L225 Difference]: With dead ends: 31 [2018-11-18 11:15:01,091 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 11:15:01,091 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 11:15:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-18 11:15:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 11:15:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-18 11:15:01,095 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2018-11-18 11:15:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:15:01,095 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-18 11:15:01,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:15:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-18 11:15:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 11:15:01,096 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:15:01,096 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:15:01,096 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:15:01,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:01,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2018-11-18 11:15:01,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:15:01,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:01,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,097 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:15:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:15:01,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:15:01,181 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 11:15:01,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-18 11:15:01,183 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [17], [20], [21], [23], [27], [28], [29], [30], [31], [33], [34], [35], [36] [2018-11-18 11:15:01,204 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:15:01,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:15:01,343 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 11:15:01,344 INFO L272 AbstractInterpreter]: Visited 18 different actions 59 times. Merged at 6 different actions 20 times. Never widened. Performed 157 root evaluator evaluations with a maximum evaluation depth of 5. Performed 157 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 2 different actions. Largest state had 5 variables. [2018-11-18 11:15:01,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:01,359 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 11:15:01,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:15:01,360 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:15:01,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:01,368 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 11:15:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:01,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:15:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:15:01,444 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:15:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:15:01,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 11:15:01,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2018-11-18 11:15:01,603 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 11:15:01,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:15:01,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:15:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:15:01,604 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2018-11-18 11:15:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:15:01,632 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-18 11:15:01,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:15:01,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-18 11:15:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:15:01,633 INFO L225 Difference]: With dead ends: 27 [2018-11-18 11:15:01,633 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 11:15:01,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:15:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 11:15:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 11:15:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 11:15:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-18 11:15:01,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-11-18 11:15:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:15:01,636 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-18 11:15:01,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:15:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-18 11:15:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:15:01,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:15:01,637 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:15:01,637 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:15:01,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:15:01,638 INFO L82 PathProgramCache]: Analyzing trace with hash 376843494, now seen corresponding path program 1 times [2018-11-18 11:15:01,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:15:01,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:15:01,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:15:01,639 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:15:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:15:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 11:15:01,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:15:01,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:15:01,670 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:15:01,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:15:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:15:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:01,671 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2018-11-18 11:15:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:15:01,680 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 11:15:01,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:15:01,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-18 11:15:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:15:01,681 INFO L225 Difference]: With dead ends: 23 [2018-11-18 11:15:01,681 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:15:01,681 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:15:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:15:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:15:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:15:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:15:01,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-18 11:15:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:15:01,682 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:15:01,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:15:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:15:01,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:15:01,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:15:01,694 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:15:01,694 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:15:01,695 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L428 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-18 11:15:01,695 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-18 11:15:01,695 INFO L425 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-18 11:15:01,696 INFO L428 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2018-11-18 11:15:01,696 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 11:15:01,696 INFO L425 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-18 11:15:01,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:15:01 BoogieIcfgContainer [2018-11-18 11:15:01,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:15:01,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:15:01,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:15:01,698 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:15:01,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:15:00" (3/4) ... [2018-11-18 11:15:01,700 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:15:01,704 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:15:01,704 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:15:01,704 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-18 11:15:01,707 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 11:15:01,707 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 11:15:01,707 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:15:01,736 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8222c4c9-d9b7-4c72-ac77-8c0d1a926673/bin-2019/utaipan/witness.graphml [2018-11-18 11:15:01,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:15:01,736 INFO L168 Benchmark]: Toolchain (without parser) took 1371.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 953.8 MB in the beginning and 1.0 GB in the end (delta: -74.5 MB). Peak memory consumption was 75.9 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,737 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:15:01,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.74 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.37 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:15:01,738 INFO L168 Benchmark]: Boogie Preprocessor took 11.21 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,738 INFO L168 Benchmark]: RCFGBuilder took 172.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,738 INFO L168 Benchmark]: TraceAbstraction took 959.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,739 INFO L168 Benchmark]: Witness Printer took 38.11 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:15:01,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.74 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.37 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.21 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 172.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 959.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 106.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.11 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 6 SDslu, 251 SDs, 0 SdLazy, 51 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3632 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 25/31 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...