./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/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 7a7b79fb8a331a00295fb9ddfb653e17bda3c30d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 06:02:39,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:02:39,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:02:39,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:02:39,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:02:39,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:02:39,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:02:39,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:02:39,346 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:02:39,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:02:39,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:02:39,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:02:39,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:02:39,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:02:39,349 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:02:39,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:02:39,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:02:39,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:02:39,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:02:39,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:02:39,355 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:02:39,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:02:39,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:02:39,358 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:02:39,358 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:02:39,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:02:39,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:02:39,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:02:39,361 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:02:39,362 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:02:39,362 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:02:39,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:02:39,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:02:39,363 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:02:39,363 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:02:39,364 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:02:39,364 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 06:02:39,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:02:39,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:02:39,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:02:39,375 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 06:02:39,375 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 06:02:39,376 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 06:02:39,376 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 06:02:39,376 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 06:02:39,376 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 06:02:39,376 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 06:02:39,376 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 06:02:39,377 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:02:39,377 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:02:39,377 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:02:39,377 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:02:39,377 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:02:39,378 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:02:39,378 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:02:39,379 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:02:39,379 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:02:39,380 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 06:02:39,380 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:02:39,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:02:39,380 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 06:02:39,380 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_b52a64f3-729f-4dbe-903d-87a6cddb6174/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 -> 7a7b79fb8a331a00295fb9ddfb653e17bda3c30d [2018-11-10 06:02:39,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:02:39,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:02:39,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:02:39,413 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:02:39,413 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:02:39,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4_false-unreach-call_true-termination.c [2018-11-10 06:02:39,451 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/data/0d0d68151/ab17829797d64b838f922ab4b1c4bc0e/FLAGd3d4c1db2 [2018-11-10 06:02:39,851 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:02:39,852 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/sv-benchmarks/c/recursive-simple/fibo_2calls_4_false-unreach-call_true-termination.c [2018-11-10 06:02:39,856 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/data/0d0d68151/ab17829797d64b838f922ab4b1c4bc0e/FLAGd3d4c1db2 [2018-11-10 06:02:39,866 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/data/0d0d68151/ab17829797d64b838f922ab4b1c4bc0e [2018-11-10 06:02:39,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:02:39,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:02:39,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:02:39,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:02:39,871 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:02:39,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:02:39" (1/1) ... [2018-11-10 06:02:39,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ca410a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:39, skipping insertion in model container [2018-11-10 06:02:39,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:02:39" (1/1) ... [2018-11-10 06:02:39,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:02:39,891 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:02:39,996 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:02:39,999 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:02:40,009 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:02:40,017 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:02:40,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40 WrapperNode [2018-11-10 06:02:40,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:02:40,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:02:40,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:02:40,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:02:40,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:02:40,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:02:40,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:02:40,030 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:02:40,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... [2018-11-10 06:02:40,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:02:40,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:02:40,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:02:40,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:02:40,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/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 [2018-11-10 06:02:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:02:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:02:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:02:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:02:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:02:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:02:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-10 06:02:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-10 06:02:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-10 06:02:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-10 06:02:40,222 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:02:40,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:02:40 BoogieIcfgContainer [2018-11-10 06:02:40,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:02:40,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:02:40,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:02:40,225 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:02:40,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:02:39" (1/3) ... [2018-11-10 06:02:40,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:02:40, skipping insertion in model container [2018-11-10 06:02:40,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:02:40" (2/3) ... [2018-11-10 06:02:40,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:02:40, skipping insertion in model container [2018-11-10 06:02:40,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:02:40" (3/3) ... [2018-11-10 06:02:40,227 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4_false-unreach-call_true-termination.c [2018-11-10 06:02:40,234 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:02:40,238 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 06:02:40,248 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 06:02:40,267 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:02:40,267 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:02:40,267 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:02:40,267 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:02:40,267 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:02:40,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:02:40,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:02:40,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:02:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-10 06:02:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 06:02:40,281 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:40,281 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:40,283 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:40,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:40,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-10 06:02:40,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:40,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:40,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:02:40,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:02:40,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:02:40,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:02:40,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:02:40,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:02:40,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:02:40,413 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-10 06:02:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:40,482 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-10 06:02:40,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:02:40,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 06:02:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:40,491 INFO L225 Difference]: With dead ends: 44 [2018-11-10 06:02:40,491 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 06:02:40,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:02:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 06:02:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-10 06:02:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 06:02:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 06:02:40,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-10 06:02:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:40,527 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 06:02:40,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:02:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 06:02:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 06:02:40,528 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:40,528 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:40,529 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:40,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:40,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-10 06:02:40,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:40,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:40,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:02:40,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:02:40,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:02:40,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:02:40,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:02:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:02:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:02:40,580 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-10 06:02:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:40,643 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-10 06:02:40,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:02:40,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 06:02:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:40,645 INFO L225 Difference]: With dead ends: 36 [2018-11-10 06:02:40,646 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 06:02:40,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:02:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 06:02:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 06:02:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 06:02:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 06:02:40,653 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-10 06:02:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:40,653 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 06:02:40,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:02:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 06:02:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 06:02:40,655 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:40,655 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:40,655 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:40,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:40,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-10 06:02:40,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:40,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:40,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:40,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 06:02:40,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:02:40,737 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:02:40,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-11-10 06:02:40,739 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [31], [32], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [56], [57], [58], [59] [2018-11-10 06:02:40,770 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:02:40,770 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:02:40,847 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:02:40,848 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-11-10 06:02:40,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:40,853 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:02:40,896 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:02:40,896 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:02:40,930 INFO L415 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2018-11-10 06:02:40,931 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:02:40,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:02:40,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-10 06:02:40,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:02:40,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 06:02:40,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 06:02:40,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 06:02:40,932 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2018-11-10 06:02:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:41,116 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2018-11-10 06:02:41,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 06:02:41,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-10 06:02:41,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:41,117 INFO L225 Difference]: With dead ends: 72 [2018-11-10 06:02:41,117 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 06:02:41,118 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-10 06:02:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 06:02:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-10 06:02:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 06:02:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-10 06:02:41,127 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 26 [2018-11-10 06:02:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:41,127 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-10 06:02:41,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 06:02:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-10 06:02:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 06:02:41,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:41,129 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:41,130 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:41,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-10 06:02:41,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:41,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:41,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:41,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:41,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 06:02:41,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:02:41,203 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:02:41,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-11-10 06:02:41,203 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [26], [28], [30], [31], [32], [35], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-10 06:02:41,206 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:02:41,206 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:02:41,219 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:02:41,219 INFO L272 AbstractInterpreter]: Visited 16 different actions 25 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-11-10 06:02:41,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:41,221 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:02:41,243 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 50% of their original sizes. [2018-11-10 06:02:41,243 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:02:41,287 INFO L415 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-11-10 06:02:41,287 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:02:41,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:02:41,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-10 06:02:41,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:02:41,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 06:02:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 06:02:41,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 06:02:41,288 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2018-11-10 06:02:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:41,589 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2018-11-10 06:02:41,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 06:02:41,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-11-10 06:02:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:41,590 INFO L225 Difference]: With dead ends: 87 [2018-11-10 06:02:41,590 INFO L226 Difference]: Without dead ends: 55 [2018-11-10 06:02:41,591 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-10 06:02:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-10 06:02:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-10 06:02:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-10 06:02:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2018-11-10 06:02:41,597 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2018-11-10 06:02:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:41,597 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2018-11-10 06:02:41,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 06:02:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2018-11-10 06:02:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 06:02:41,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:41,599 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:41,599 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:41,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:41,599 INFO L82 PathProgramCache]: Analyzing trace with hash -209212298, now seen corresponding path program 2 times [2018-11-10 06:02:41,599 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:41,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:41,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:41,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:41,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 06:02:41,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:02:41,673 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:02:41,673 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 06:02:41,674 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 06:02:41,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:02:41,674 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/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 [2018-11-10 06:02:41,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:02:41,682 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 06:02:41,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 06:02:41,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:02:41,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:02:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-10 06:02:41,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:02:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 06:02:42,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 06:02:42,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2018-11-10 06:02:42,028 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 06:02:42,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 06:02:42,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 06:02:42,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-11-10 06:02:42,029 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 11 states. [2018-11-10 06:02:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:42,194 INFO L93 Difference]: Finished difference Result 121 states and 177 transitions. [2018-11-10 06:02:42,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 06:02:42,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2018-11-10 06:02:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:42,196 INFO L225 Difference]: With dead ends: 121 [2018-11-10 06:02:42,196 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 06:02:42,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-10 06:02:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 06:02:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2018-11-10 06:02:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 06:02:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-11-10 06:02:42,206 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 52 [2018-11-10 06:02:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:42,206 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-11-10 06:02:42,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 06:02:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-11-10 06:02:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-10 06:02:42,208 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:42,208 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:42,208 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:42,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2018-11-10 06:02:42,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:42,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:42,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:02:42,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:42,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:02:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-10 06:02:42,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:02:42,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:02:42,268 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-11-10 06:02:42,269 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [26], [28], [30], [31], [32], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-11-10 06:02:42,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:02:42,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:02:42,311 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:02:42,312 INFO L272 AbstractInterpreter]: Visited 29 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-11-10 06:02:42,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:42,317 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:02:42,368 INFO L227 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 48.04% of their original sizes. [2018-11-10 06:02:42,368 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:02:42,693 INFO L415 sIntCurrentIteration]: We unified 54 AI predicates to 54 [2018-11-10 06:02:42,693 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:02:42,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:02:42,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [7] total 32 [2018-11-10 06:02:42,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:02:42,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-10 06:02:42,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-10 06:02:42,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2018-11-10 06:02:42,694 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 27 states. [2018-11-10 06:02:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:02:44,326 INFO L93 Difference]: Finished difference Result 127 states and 162 transitions. [2018-11-10 06:02:44,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 06:02:44,327 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 55 [2018-11-10 06:02:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:02:44,328 INFO L225 Difference]: With dead ends: 127 [2018-11-10 06:02:44,328 INFO L226 Difference]: Without dead ends: 86 [2018-11-10 06:02:44,330 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2018-11-10 06:02:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-10 06:02:44,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2018-11-10 06:02:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-10 06:02:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2018-11-10 06:02:44,351 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 55 [2018-11-10 06:02:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:02:44,352 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2018-11-10 06:02:44,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-10 06:02:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2018-11-10 06:02:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-10 06:02:44,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:02:44,355 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:02:44,355 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:02:44,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:02:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 1 times [2018-11-10 06:02:44,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:02:44,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:44,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:02:44,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:02:44,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:02:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:02:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 06:02:44,395 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 06:02:44,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:02:44 BoogieIcfgContainer [2018-11-10 06:02:44,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:02:44,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:02:44,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:02:44,417 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:02:44,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:02:40" (3/4) ... [2018-11-10 06:02:44,419 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 06:02:44,457 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b52a64f3-729f-4dbe-903d-87a6cddb6174/bin-2019/utaipan/witness.graphml [2018-11-10 06:02:44,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:02:44,458 INFO L168 Benchmark]: Toolchain (without parser) took 4590.12 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.2 MB). Free memory was 959.1 MB in the beginning and 1.3 GB in the end (delta: -333.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:02:44,459 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:02:44,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.08 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:02:44,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:02:44,460 INFO L168 Benchmark]: Boogie Preprocessor took 10.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:02:44,461 INFO L168 Benchmark]: RCFGBuilder took 181.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:02:44,461 INFO L168 Benchmark]: TraceAbstraction took 4193.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -151.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:02:44,461 INFO L168 Benchmark]: Witness Printer took 40.73 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:02:44,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.08 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 181.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -196.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4193.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 151.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -151.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 40.73 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 4; VAL [x=4] [L37] CALL, EXPR fibo1(x) VAL [\old(n)=4] [L8] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L10] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 [L21] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L13] EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 [L19] RET return 0; VAL [\old(n)=0, \result=0, n=0] [L13] EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] RET return fibo2(n-1) + fibo2(n-2); [L23] EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L23] EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] RET return fibo1(n-1) + fibo1(n-2); [L13] EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L23] EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] RET return 0; VAL [\old(n)=0, \result=0, n=0] [L23] EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] RET return fibo1(n-1) + fibo1(n-2); [L13] EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L13] RET return fibo2(n-1) + fibo2(n-2); [L37] EXPR fibo1(x) VAL [fibo1(x)=3, x=4] [L37] int result = fibo1(x); [L38] COND TRUE result == 3 VAL [result=3, x=4] [L39] __VERIFIER_error() VAL [result=3, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. UNSAFE Result, 4.1s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 194 SDtfs, 166 SDslu, 1409 SDs, 0 SdLazy, 520 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 271 GetRequests, 176 SyntacticMatches, 8 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9310541310541304 AbsIntWeakeningRatio, 0.5641025641025641 AbsIntAvgWeakeningVarsNumRemoved, 3.923076923076923 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 21787 SizeOfPredicates, 4 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 145/189 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...