./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7b71b458b3f08f188a62c7539b715f43fd7f97d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 09:43:29,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:43:29,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:43:29,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:43:29,253 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:43:29,254 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:43:29,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:43:29,256 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:43:29,257 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:43:29,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:43:29,258 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:43:29,259 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:43:29,259 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:43:29,260 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:43:29,261 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:43:29,261 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:43:29,263 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:43:29,264 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:43:29,265 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:43:29,267 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:43:29,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:43:29,268 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:43:29,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:43:29,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:43:29,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:43:29,271 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:43:29,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:43:29,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:43:29,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:43:29,275 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:43:29,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:43:29,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:43:29,275 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:43:29,276 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:43:29,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:43:29,277 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:43:29,277 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 09:43:29,288 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:43:29,288 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:43:29,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:43:29,289 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:43:29,289 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 09:43:29,289 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 09:43:29,289 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 09:43:29,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:43:29,290 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:43:29,291 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:43:29,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:43:29,292 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:43:29,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:43:29,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 09:43:29,294 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer 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 -> Automizer 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 -> c7b71b458b3f08f188a62c7539b715f43fd7f97d [2018-11-23 09:43:29,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:43:29,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:43:29,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:43:29,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:43:29,331 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:43:29,331 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c [2018-11-23 09:43:29,371 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/data/8e77d3b17/a6e4f6b0bccb4d37bd6efa9271c49e53/FLAGd467f3f01 [2018-11-23 09:43:29,767 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:43:29,768 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/sv-benchmarks/c/recursive-simple/fibo_5_true-unreach-call_true-termination.c [2018-11-23 09:43:29,771 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/data/8e77d3b17/a6e4f6b0bccb4d37bd6efa9271c49e53/FLAGd467f3f01 [2018-11-23 09:43:29,779 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/data/8e77d3b17/a6e4f6b0bccb4d37bd6efa9271c49e53 [2018-11-23 09:43:29,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:43:29,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:43:29,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:43:29,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:43:29,786 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:43:29,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345cb115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29, skipping insertion in model container [2018-11-23 09:43:29,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:43:29,804 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:43:29,906 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:43:29,908 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:43:29,917 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:43:29,924 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:43:29,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29 WrapperNode [2018-11-23 09:43:29,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:43:29,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:43:29,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:43:29,925 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:43:29,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:43:29,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:43:29,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:43:29,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:43:29,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... [2018-11-23 09:43:29,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:43:29,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:43:29,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:43:29,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:43:29,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/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 [2018-11-23 09:43:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 09:43:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 09:43:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:43:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:43:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 09:43:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 09:43:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2018-11-23 09:43:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2018-11-23 09:43:30,145 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:43:30,145 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 09:43:30,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:30 BoogieIcfgContainer [2018-11-23 09:43:30,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:43:30,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:43:30,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:43:30,149 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:43:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:43:29" (1/3) ... [2018-11-23 09:43:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d1fac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:30, skipping insertion in model container [2018-11-23 09:43:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:43:29" (2/3) ... [2018-11-23 09:43:30,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d1fac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:43:30, skipping insertion in model container [2018-11-23 09:43:30,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:30" (3/3) ... [2018-11-23 09:43:30,151 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5_true-unreach-call_true-termination.c [2018-11-23 09:43:30,158 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:43:30,164 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 09:43:30,178 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 09:43:30,203 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 09:43:30,204 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:43:30,204 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:43:30,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:43:30,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:43:30,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:43:30,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:43:30,205 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:43:30,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:43:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 09:43:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 09:43:30,223 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:30,224 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:30,225 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:30,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2018-11-23 09:43:30,232 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:30,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:30,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:43:30,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:43:30,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 09:43:30,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 09:43:30,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 09:43:30,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 09:43:30,371 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-11-23 09:43:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:30,439 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-11-23 09:43:30,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 09:43:30,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 09:43:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:30,447 INFO L225 Difference]: With dead ends: 35 [2018-11-23 09:43:30,448 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 09:43:30,450 INFO L631 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 [2018-11-23 09:43:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 09:43:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 09:43:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 09:43:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-23 09:43:30,480 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2018-11-23 09:43:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:30,480 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-23 09:43:30,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 09:43:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-23 09:43:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 09:43:30,482 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:30,482 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:30,482 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:30,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:30,482 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2018-11-23 09:43:30,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:30,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:30,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:43:30,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:43:30,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 09:43:30,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 09:43:30,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 09:43:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 09:43:30,521 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2018-11-23 09:43:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:30,577 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-11-23 09:43:30,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 09:43:30,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 09:43:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:30,578 INFO L225 Difference]: With dead ends: 27 [2018-11-23 09:43:30,579 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 09:43:30,579 INFO L631 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 [2018-11-23 09:43:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 09:43:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-23 09:43:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 09:43:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-23 09:43:30,584 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2018-11-23 09:43:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:30,585 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-23 09:43:30,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 09:43:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-23 09:43:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 09:43:30,585 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:30,585 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:30,586 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:30,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2018-11-23 09:43:30,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:30,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:30,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 09:43:30,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:30,650 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/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 [2018-11-23 09:43:30,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 09:43:30,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:30,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 09:43:30,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 09:43:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 09:43:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 09:43:30,768 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2018-11-23 09:43:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:30,867 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2018-11-23 09:43:30,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 09:43:30,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-11-23 09:43:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:30,869 INFO L225 Difference]: With dead ends: 38 [2018-11-23 09:43:30,869 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 09:43:30,870 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:43:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 09:43:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-23 09:43:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 09:43:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-23 09:43:30,875 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2018-11-23 09:43:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:30,875 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-23 09:43:30,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 09:43:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-23 09:43:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 09:43:30,876 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:30,876 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:30,877 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:30,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2018-11-23 09:43:30,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:30,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:30,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 09:43:30,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:30,913 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/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 [2018-11-23 09:43:30,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:30,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 09:43:30,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:30,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 09:43:30,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 09:43:30,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 09:43:30,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:43:30,982 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2018-11-23 09:43:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:31,022 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2018-11-23 09:43:31,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 09:43:31,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-11-23 09:43:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:31,025 INFO L225 Difference]: With dead ends: 32 [2018-11-23 09:43:31,025 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 09:43:31,025 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 09:43:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 09:43:31,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-23 09:43:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 09:43:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2018-11-23 09:43:31,030 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 27 [2018-11-23 09:43:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:31,031 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2018-11-23 09:43:31,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 09:43:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2018-11-23 09:43:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 09:43:31,032 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:31,032 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:31,032 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:31,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2018-11-23 09:43:31,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:31,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:31,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:31,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 09:43:31,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:31,086 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:31,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 09:43:31,104 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 09:43:31,104 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:31,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-23 09:43:31,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:31,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-11-23 09:43:31,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 09:43:31,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 09:43:31,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 09:43:31,162 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 8 states. [2018-11-23 09:43:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:31,229 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2018-11-23 09:43:31,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 09:43:31,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-11-23 09:43:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:31,231 INFO L225 Difference]: With dead ends: 40 [2018-11-23 09:43:31,231 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 09:43:31,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:43:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 09:43:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-23 09:43:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 09:43:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2018-11-23 09:43:31,239 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 40 [2018-11-23 09:43:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:31,240 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2018-11-23 09:43:31,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 09:43:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2018-11-23 09:43:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-23 09:43:31,242 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:31,242 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:31,243 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:31,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1474757101, now seen corresponding path program 3 times [2018-11-23 09:43:31,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:31,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:31,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:43:31,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 176 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-23 09:43:31,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:31,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:31,388 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 09:43:31,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 09:43:31,416 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:31,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-11-23 09:43:31,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:31,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2018-11-23 09:43:31,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 09:43:31,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 09:43:31,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:43:31,459 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 12 states. [2018-11-23 09:43:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:31,637 INFO L93 Difference]: Finished difference Result 76 states and 143 transitions. [2018-11-23 09:43:31,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 09:43:31,637 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2018-11-23 09:43:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:31,638 INFO L225 Difference]: With dead ends: 76 [2018-11-23 09:43:31,638 INFO L226 Difference]: Without dead ends: 49 [2018-11-23 09:43:31,639 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-11-23 09:43:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-23 09:43:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-11-23 09:43:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-23 09:43:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2018-11-23 09:43:31,646 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 96 [2018-11-23 09:43:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:31,646 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions. [2018-11-23 09:43:31,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 09:43:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions. [2018-11-23 09:43:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-23 09:43:31,648 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:31,648 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:31,648 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:31,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:31,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 4 times [2018-11-23 09:43:31,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:31,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:31,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:43:31,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-23 09:43:31,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:31,719 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:31,731 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 09:43:31,745 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 09:43:31,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:31,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-23 09:43:31,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:31,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2018-11-23 09:43:31,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 09:43:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 09:43:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 09:43:31,784 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand 8 states. [2018-11-23 09:43:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:31,858 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2018-11-23 09:43:31,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 09:43:31,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2018-11-23 09:43:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:31,860 INFO L225 Difference]: With dead ends: 52 [2018-11-23 09:43:31,860 INFO L226 Difference]: Without dead ends: 48 [2018-11-23 09:43:31,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:43:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-23 09:43:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-23 09:43:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-23 09:43:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 77 transitions. [2018-11-23 09:43:31,868 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 77 transitions. Word has length 68 [2018-11-23 09:43:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:31,869 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 77 transitions. [2018-11-23 09:43:31,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 09:43:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 77 transitions. [2018-11-23 09:43:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-23 09:43:31,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:31,871 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 14, 8, 8, 8, 8, 8, 8, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:31,874 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:31,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:31,874 INFO L82 PathProgramCache]: Analyzing trace with hash 702878917, now seen corresponding path program 5 times [2018-11-23 09:43:31,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:31,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:31,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:43:31,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 145 proven. 154 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2018-11-23 09:43:32,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:32,004 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:32,010 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 09:43:32,042 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-23 09:43:32,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:32,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 422 proven. 118 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-11-23 09:43:32,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:32,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2018-11-23 09:43:32,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 09:43:32,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 09:43:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-11-23 09:43:32,161 INFO L87 Difference]: Start difference. First operand 48 states and 77 transitions. Second operand 17 states. [2018-11-23 09:43:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:32,402 INFO L93 Difference]: Finished difference Result 106 states and 196 transitions. [2018-11-23 09:43:32,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 09:43:32,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2018-11-23 09:43:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:32,403 INFO L225 Difference]: With dead ends: 106 [2018-11-23 09:43:32,403 INFO L226 Difference]: Without dead ends: 52 [2018-11-23 09:43:32,405 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2018-11-23 09:43:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-23 09:43:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-23 09:43:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 09:43:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-11-23 09:43:32,411 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 123 [2018-11-23 09:43:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:32,411 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-11-23 09:43:32,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 09:43:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-11-23 09:43:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-23 09:43:32,413 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:32,413 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:32,413 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:32,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 6 times [2018-11-23 09:43:32,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:32,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:32,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:32,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:43:32,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-23 09:43:32,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:32,624 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:32,630 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 09:43:32,657 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-23 09:43:32,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:32,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-23 09:43:32,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:32,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 20 [2018-11-23 09:43:32,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 09:43:32,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 09:43:32,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:43:32,800 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 20 states. [2018-11-23 09:43:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:32,907 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2018-11-23 09:43:32,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 09:43:32,907 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2018-11-23 09:43:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:32,908 INFO L225 Difference]: With dead ends: 66 [2018-11-23 09:43:32,908 INFO L226 Difference]: Without dead ends: 59 [2018-11-23 09:43:32,909 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:43:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-23 09:43:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2018-11-23 09:43:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-23 09:43:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2018-11-23 09:43:32,915 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 109 [2018-11-23 09:43:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:32,915 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2018-11-23 09:43:32,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 09:43:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2018-11-23 09:43:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-23 09:43:32,918 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:32,918 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:32,918 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:32,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 7 times [2018-11-23 09:43:32,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:32,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:32,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:32,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:43:32,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 241 proven. 102 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-11-23 09:43:33,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:33,033 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:33,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:33,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 243 proven. 97 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2018-11-23 09:43:33,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:33,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2018-11-23 09:43:33,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 09:43:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 09:43:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:43:33,142 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 12 states. [2018-11-23 09:43:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:33,206 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2018-11-23 09:43:33,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 09:43:33,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2018-11-23 09:43:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:33,207 INFO L225 Difference]: With dead ends: 64 [2018-11-23 09:43:33,207 INFO L226 Difference]: Without dead ends: 57 [2018-11-23 09:43:33,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:43:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-23 09:43:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-23 09:43:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-23 09:43:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2018-11-23 09:43:33,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 136 [2018-11-23 09:43:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:33,214 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2018-11-23 09:43:33,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 09:43:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2018-11-23 09:43:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-23 09:43:33,216 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:43:33,216 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:43:33,216 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:43:33,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:43:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash -344605238, now seen corresponding path program 8 times [2018-11-23 09:43:33,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:43:33,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:43:33,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:33,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:43:33,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:43:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:43:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 127 proven. 275 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-23 09:43:33,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:43:33,323 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:43:33,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 09:43:33,353 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 09:43:33,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:43:33,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:43:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 135 proven. 263 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2018-11-23 09:43:33,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:43:33,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2018-11-23 09:43:33,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 09:43:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 09:43:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-23 09:43:33,430 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 13 states. [2018-11-23 09:43:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:43:33,518 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-11-23 09:43:33,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 09:43:33,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2018-11-23 09:43:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:43:33,519 INFO L225 Difference]: With dead ends: 60 [2018-11-23 09:43:33,519 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 09:43:33,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-11-23 09:43:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 09:43:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 09:43:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 09:43:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 09:43:33,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2018-11-23 09:43:33,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:43:33,520 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 09:43:33,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 09:43:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 09:43:33,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 09:43:33,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 09:43:33,770 WARN L180 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-11-23 09:43:33,806 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 09:43:33,806 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:43:33,806 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:43:33,806 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 09:43:33,807 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L444 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (<= 5 main_~x~0) (<= main_~x~0 5)) [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2018-11-23 09:43:33,807 INFO L448 ceAbstractionStarter]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2018-11-23 09:43:33,808 INFO L444 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (and (<= fibo_~n |fibo_#in~n|) (<= |fibo_#in~n| fibo_~n) (< 1 fibo_~n)) [2018-11-23 09:43:33,808 INFO L448 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-11-23 09:43:33,808 INFO L444 ceAbstractionStarter]: At program point L11-2(line 11) the Hoare annotation is: (and (let ((.cse0 (<= |fibo_#in~n| fibo_~n))) (or (and (<= 3 |fibo_#t~ret0|) .cse0 (<= |fibo_#t~ret0| 3)) (and .cse0 (<= 6 |fibo_#in~n|)) (and (<= |fibo_#in~n| 4) .cse0 (< 1 fibo_~n)))) (<= fibo_~n |fibo_#in~n|) (or (and (<= 4 |fibo_#in~n|) (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2)) (<= 5 |fibo_#in~n|) (and (<= |fibo_#t~ret0| 1) (<= |fibo_#in~n| 3) (<= 1 |fibo_#t~ret0|)))) [2018-11-23 09:43:33,808 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 12) no Hoare annotation was computed. [2018-11-23 09:43:33,808 INFO L448 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-11-23 09:43:33,808 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 12) no Hoare annotation was computed. [2018-11-23 09:43:33,808 INFO L451 ceAbstractionStarter]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2018-11-23 09:43:33,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:43:33 BoogieIcfgContainer [2018-11-23 09:43:33,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 09:43:33,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 09:43:33,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 09:43:33,812 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 09:43:33,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:43:30" (3/4) ... [2018-11-23 09:43:33,816 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 09:43:33,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 09:43:33,822 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 09:43:33,822 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2018-11-23 09:43:33,825 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 09:43:33,825 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 09:43:33,825 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 09:43:33,853 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_11a4125b-6628-4b1b-97c1-8100dcd1087e/bin-2019/uautomizer/witness.graphml [2018-11-23 09:43:33,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 09:43:33,854 INFO L168 Benchmark]: Toolchain (without parser) took 4072.19 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 305.7 MB). Free memory was 954.4 MB in the beginning and 1.2 GB in the end (delta: -226.7 MB). Peak memory consumption was 78.9 MB. Max. memory is 11.5 GB. [2018-11-23 09:43:33,854 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:43:33,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.47 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:43:33,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.12 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:43:33,855 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:43:33,855 INFO L168 Benchmark]: RCFGBuilder took 196.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 09:43:33,855 INFO L168 Benchmark]: TraceAbstraction took 3664.70 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.4 MB). Peak memory consumption was 107.5 MB. Max. memory is 11.5 GB. [2018-11-23 09:43:33,856 INFO L168 Benchmark]: Witness Printer took 41.86 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:43:33,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.47 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 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 12.12 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 196.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3664.70 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.4 MB). Peak memory consumption was 107.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.86 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 11 OverallIterations, 19 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 245 SDtfs, 211 SDslu, 1055 SDs, 0 SdLazy, 1023 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 776 SyntacticMatches, 13 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 71 PreInvPairs, 118 NumberOfFragments, 79 HoareAnnotationTreeSize, 71 FomulaSimplifications, 495 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 498 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1549 NumberOfCodeBlocks, 1444 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1529 ConstructedInterpolants, 0 QuantifiedInterpolants, 325071 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1459 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 6155/7742 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...