./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/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 fb13e67548d34af589d64a91d36af5946c1dd198 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:32:59,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:32:59,486 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:32:59,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:32:59,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:32:59,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:32:59,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:32:59,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:32:59,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:32:59,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:32:59,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:32:59,496 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:32:59,497 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:32:59,498 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:32:59,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:32:59,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:32:59,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:32:59,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:32:59,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:32:59,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:32:59,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:32:59,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:32:59,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:32:59,505 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:32:59,505 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:32:59,505 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:32:59,506 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:32:59,506 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:32:59,507 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:32:59,507 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:32:59,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:32:59,508 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:32:59,508 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:32:59,508 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:32:59,509 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:32:59,509 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:32:59,509 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 01:32:59,517 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:32:59,517 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:32:59,517 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:32:59,518 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:32:59,518 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:32:59,519 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:32:59,519 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:32:59,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:32:59,519 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:32:59,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:32:59,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:32:59,521 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:32:59,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:32:59,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:32:59,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:32:59,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:32:59,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:32:59,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:32:59,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:32:59,522 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:32:59,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:32:59,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:32:59,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:32:59,522 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_225b7ed6-59fb-4aea-a4ae-71cb5b991430/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 -> fb13e67548d34af589d64a91d36af5946c1dd198 [2018-12-09 01:32:59,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:32:59,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:32:59,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:32:59,549 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:32:59,549 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:32:59,550 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-12-09 01:32:59,584 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/data/21df0ceb8/b2324ccb772442208be06bb6a5495b2a/FLAGb746b763e [2018-12-09 01:33:00,028 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:33:00,028 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-12-09 01:33:00,032 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/data/21df0ceb8/b2324ccb772442208be06bb6a5495b2a/FLAGb746b763e [2018-12-09 01:33:00,040 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/data/21df0ceb8/b2324ccb772442208be06bb6a5495b2a [2018-12-09 01:33:00,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:33:00,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:33:00,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:33:00,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:33:00,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:33:00,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf44b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00, skipping insertion in model container [2018-12-09 01:33:00,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:33:00,059 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:33:00,140 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:33:00,142 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:33:00,150 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:33:00,158 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:33:00,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00 WrapperNode [2018-12-09 01:33:00,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:33:00,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:33:00,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:33:00,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:33:00,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:33:00,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:33:00,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:33:00,170 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:33:00,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... [2018-12-09 01:33:00,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:33:00,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:33:00,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:33:00,183 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:33:00,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/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 [2018-12-09 01:33:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:33:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:33:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:33:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:33:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:33:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:33:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 01:33:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 01:33:00,334 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:33:00,334 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:33:00,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:33:00 BoogieIcfgContainer [2018-12-09 01:33:00,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:33:00,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:33:00,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:33:00,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:33:00,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:33:00" (1/3) ... [2018-12-09 01:33:00,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542ba2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:33:00, skipping insertion in model container [2018-12-09 01:33:00,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:33:00" (2/3) ... [2018-12-09 01:33:00,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542ba2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:33:00, skipping insertion in model container [2018-12-09 01:33:00,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:33:00" (3/3) ... [2018-12-09 01:33:00,339 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-12-09 01:33:00,345 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:33:00,349 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:33:00,358 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:33:00,376 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:33:00,377 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:33:00,377 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:33:00,377 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:33:00,377 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:33:00,377 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:33:00,377 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:33:00,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:33:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-09 01:33:00,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:33:00,391 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:00,391 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:00,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:33:00,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2018-12-09 01:33:00,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:33:00,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:33:00,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,427 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:33:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:00,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:33:00,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:33:00,465 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:33:00,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:33:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:33:00,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:33:00,477 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-09 01:33:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:00,492 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-09 01:33:00,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:33:00,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-12-09 01:33:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:00,500 INFO L225 Difference]: With dead ends: 31 [2018-12-09 01:33:00,500 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 01:33:00,502 INFO L631 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 [2018-12-09 01:33:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 01:33:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 01:33:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 01:33:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 01:33:00,523 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2018-12-09 01:33:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:00,524 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 01:33:00,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:33:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 01:33:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:33:00,524 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:00,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:00,524 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:33:00,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2018-12-09 01:33:00,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:33:00,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:33:00,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:33:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:00,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:33:00,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:33:00,544 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:33:00,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:33:00,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:33:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:33:00,546 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-12-09 01:33:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:00,556 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-09 01:33:00,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:33:00,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-09 01:33:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:00,557 INFO L225 Difference]: With dead ends: 18 [2018-12-09 01:33:00,557 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 01:33:00,557 INFO L631 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 [2018-12-09 01:33:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 01:33:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 01:33:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 01:33:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 01:33:00,559 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 01:33:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:00,560 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 01:33:00,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:33:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 01:33:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:33:00,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:00,560 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:00,560 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:33:00,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2018-12-09 01:33:00,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:33:00,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:33:00,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:00,561 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:33:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:00,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:00,684 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:33:00,684 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-09 01:33:00,685 INFO L205 CegarAbsIntRunner]: [0], [4], [8], [15], [17], [24], [27], [29], [35], [36], [37], [39] [2018-12-09 01:33:00,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:33:00,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:33:00,793 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:33:00,794 INFO L272 AbstractInterpreter]: Visited 12 different actions 30 times. Merged at 2 different actions 6 times. Widened at 1 different actions 1 times. Performed 102 root evaluator evaluations with a maximum evaluation depth of 4. Performed 102 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-12-09 01:33:00,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:00,799 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:33:00,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:00,799 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/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 [2018-12-09 01:33:00,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:33:00,805 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:33:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:00,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:33:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:00,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:33:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:00,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 01:33:00,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-12-09 01:33:00,974 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:33:00,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:33:00,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:33:00,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-12-09 01:33:00,975 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-12-09 01:33:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:01,042 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-09 01:33:01,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:33:01,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-12-09 01:33:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:01,042 INFO L225 Difference]: With dead ends: 19 [2018-12-09 01:33:01,043 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 01:33:01,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:33:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 01:33:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 01:33:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 01:33:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 01:33:01,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-09 01:33:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:01,045 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 01:33:01,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:33:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 01:33:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 01:33:01,045 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:33:01,046 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:33:01,046 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:33:01,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:33:01,046 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2018-12-09 01:33:01,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:33:01,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:01,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:33:01,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:33:01,047 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:33:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:33:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:33:01,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:01,111 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:33:01,112 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 01:33:01,112 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 01:33:01,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:33:01,112 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:33:01,118 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:33:01,118 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 01:33:01,124 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-09 01:33:01,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:33:01,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:33:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:01,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:33:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:33:01,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 01:33:01,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2018-12-09 01:33:01,275 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:33:01,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 01:33:01,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 01:33:01,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:33:01,276 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2018-12-09 01:33:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:33:01,403 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-12-09 01:33:01,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:33:01,403 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-12-09 01:33:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:33:01,404 INFO L225 Difference]: With dead ends: 16 [2018-12-09 01:33:01,404 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:33:01,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-12-09 01:33:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:33:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:33:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:33:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:33:01,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-09 01:33:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:33:01,405 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:33:01,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 01:33:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:33:01,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:33:01,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:33:01,474 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 01:33:01,474 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:33:01,474 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:33:01,474 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:33:01,474 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:33:01,474 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:33:01,474 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2018-12-09 01:33:01,475 INFO L444 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) (and (<= main_~lo~0 1) (exists ((v_main_~mid~0_9 Int)) (and (= (* 2 v_main_~mid~0_9) (+ main_~hi~0 1)) (<= v_main_~mid~0_9 1) (< 0 v_main_~mid~0_9))) (<= 1 main_~lo~0) (exists ((v_main_~mid~0_9 Int)) (and (<= v_main_~mid~0_9 (+ main_~mid~0 1)) (= (* 2 v_main_~mid~0_9) (+ main_~hi~0 1)) (< 0 v_main_~mid~0_9))))) [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-09 01:33:01,475 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-09 01:33:01,476 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-09 01:33:01,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:33:01 BoogieIcfgContainer [2018-12-09 01:33:01,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:33:01,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:33:01,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:33:01,483 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:33:01,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:33:00" (3/4) ... [2018-12-09 01:33:01,485 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:33:01,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:33:01,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:33:01,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 01:33:01,491 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 01:33:01,492 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 01:33:01,492 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:33:01,514 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_225b7ed6-59fb-4aea-a4ae-71cb5b991430/bin-2019/utaipan/witness.graphml [2018-12-09 01:33:01,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:33:01,515 INFO L168 Benchmark]: Toolchain (without parser) took 1473.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 962.4 MB in the beginning and 941.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 168.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:01,516 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:01,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.69 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:01,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:01,516 INFO L168 Benchmark]: Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:01,517 INFO L168 Benchmark]: RCFGBuilder took 152.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:01,517 INFO L168 Benchmark]: TraceAbstraction took 1147.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 941.0 MB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:33:01,517 INFO L168 Benchmark]: Witness Printer took 31.67 ms. Allocated memory is still 1.2 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:33:01,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.69 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 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 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.91 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1147.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 941.0 MB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 11.5 GB. * Witness Printer took 31.67 ms. Allocated memory is still 1.2 GB. Free memory is still 941.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * 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: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 9 SDslu, 105 SDs, 0 SdLazy, 87 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 4 QuantifiedInterpolants, 5015 SizeOfPredicates, 8 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...