./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e40a98558d0111ea95f3ee60a44cc14c7768182 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:10:19,584 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:10:19,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:10:19,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:10:19,593 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:10:19,594 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:10:19,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:10:19,597 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:10:19,598 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:10:19,599 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:10:19,600 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:10:19,600 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:10:19,601 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:10:19,602 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:10:19,603 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:10:19,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:10:19,604 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:10:19,606 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:10:19,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:10:19,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:10:19,611 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:10:19,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:10:19,613 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:10:19,613 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:10:19,613 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:10:19,615 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:10:19,616 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:10:19,616 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:10:19,617 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:10:19,618 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:10:19,618 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:10:19,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:10:19,619 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:10:19,620 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:10:19,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:10:19,621 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:10:19,622 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-23 01:10:19,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:10:19,635 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:10:19,635 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:10:19,636 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:10:19,636 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 01:10:19,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 01:10:19,637 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 01:10:19,637 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:10:19,637 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:10:19,637 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 01:10:19,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:10:19,637 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:10:19,638 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:10:19,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 01:10:19,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:10:19,640 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 01:10:19,640 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 01:10:19,640 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:10:19,640 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:10:19,640 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:10:19,641 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 01:10:19,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:10:19,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:10:19,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:10:19,641 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:10:19,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:10:19,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:10:19,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:10:19,642 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 01:10:19,642 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 01:10:19,642 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:10:19,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 01:10:19,643 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_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 ! overflow) ) 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 -> 7e40a98558d0111ea95f3ee60a44cc14c7768182 [2018-11-23 01:10:19,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:10:19,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:10:19,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:10:19,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:10:19,686 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:10:19,687 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 01:10:19,740 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/data/ffcacdb14/91d299ba59604531b223d30e46b1f42b/FLAGb38228b93 [2018-11-23 01:10:20,104 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:10:20,104 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/sv-benchmarks/c/recursive/Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 01:10:20,108 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/data/ffcacdb14/91d299ba59604531b223d30e46b1f42b/FLAGb38228b93 [2018-11-23 01:10:20,119 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/data/ffcacdb14/91d299ba59604531b223d30e46b1f42b [2018-11-23 01:10:20,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:10:20,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:10:20,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:10:20,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:10:20,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:10:20,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22877cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20, skipping insertion in model container [2018-11-23 01:10:20,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:10:20,149 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:10:20,271 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:10:20,274 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:10:20,285 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:10:20,296 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:10:20,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20 WrapperNode [2018-11-23 01:10:20,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:10:20,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:10:20,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:10:20,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:10:20,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:10:20,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:10:20,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:10:20,314 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:10:20,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... [2018-11-23 01:10:20,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:10:20,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:10:20,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:10:20,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:10:20,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-11-23 01:10:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-11-23 01:10:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 01:10:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 01:10:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:10:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:10:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 01:10:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 01:10:20,554 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:10:20,555 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 01:10:20,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:20 BoogieIcfgContainer [2018-11-23 01:10:20,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:10:20,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:10:20,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:10:20,559 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:10:20,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:10:20" (1/3) ... [2018-11-23 01:10:20,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10239244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:10:20, skipping insertion in model container [2018-11-23 01:10:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:20" (2/3) ... [2018-11-23 01:10:20,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10239244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:10:20, skipping insertion in model container [2018-11-23 01:10:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:20" (3/3) ... [2018-11-23 01:10:20,561 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 01:10:20,568 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:10:20,574 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 01:10:20,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 01:10:20,608 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 01:10:20,608 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:10:20,608 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 01:10:20,609 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:10:20,609 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:10:20,609 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:10:20,609 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:10:20,609 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:10:20,609 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:10:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-23 01:10:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 01:10:20,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:20,630 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:20,631 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:20,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:20,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1707029017, now seen corresponding path program 1 times [2018-11-23 01:10:20,636 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:20,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:20,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:20,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:20,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:20,773 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 01:10:20,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:10:20,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:10:20,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:10:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:10:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:10:20,796 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2018-11-23 01:10:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:20,940 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-11-23 01:10:20,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:10:20,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-23 01:10:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:20,949 INFO L225 Difference]: With dead ends: 38 [2018-11-23 01:10:20,949 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 01:10:20,952 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 01:10:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 01:10:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-23 01:10:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 01:10:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-23 01:10:20,987 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2018-11-23 01:10:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:20,987 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-23 01:10:20,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:10:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-23 01:10:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 01:10:20,989 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:20,989 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:20,990 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:20,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:20,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1378291933, now seen corresponding path program 1 times [2018-11-23 01:10:20,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:20,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:20,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:20,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:20,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,015 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 01:10:21,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:10:21,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 01:10:21,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:10:21,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:10:21,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:10:21,017 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2018-11-23 01:10:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:21,040 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2018-11-23 01:10:21,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:10:21,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-23 01:10:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:21,042 INFO L225 Difference]: With dead ends: 27 [2018-11-23 01:10:21,043 INFO L226 Difference]: Without dead ends: 25 [2018-11-23 01:10:21,043 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:10:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-23 01:10:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-23 01:10:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 01:10:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-23 01:10:21,050 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2018-11-23 01:10:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:21,051 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-23 01:10:21,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:10:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-23 01:10:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-23 01:10:21,052 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:21,052 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:21,052 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:21,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:21,053 INFO L82 PathProgramCache]: Analyzing trace with hash -995069271, now seen corresponding path program 1 times [2018-11-23 01:10:21,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:21,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:21,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:21,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 01:10:21,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:21,148 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:21,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:10:21,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:21,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2018-11-23 01:10:21,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 01:10:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 01:10:21,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-23 01:10:21,317 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2018-11-23 01:10:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:21,519 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2018-11-23 01:10:21,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 01:10:21,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-11-23 01:10:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:21,521 INFO L225 Difference]: With dead ends: 78 [2018-11-23 01:10:21,521 INFO L226 Difference]: Without dead ends: 59 [2018-11-23 01:10:21,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-11-23 01:10:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-23 01:10:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2018-11-23 01:10:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-23 01:10:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2018-11-23 01:10:21,529 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 32 [2018-11-23 01:10:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:21,529 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2018-11-23 01:10:21,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 01:10:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2018-11-23 01:10:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 01:10:21,531 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:21,531 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:21,531 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:21,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash 131544367, now seen corresponding path program 1 times [2018-11-23 01:10:21,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:21,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:21,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-23 01:10:21,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:10:21,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:10:21,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:10:21,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:10:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:10:21,572 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 5 states. [2018-11-23 01:10:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:21,620 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2018-11-23 01:10:21,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 01:10:21,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-23 01:10:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:21,623 INFO L225 Difference]: With dead ends: 78 [2018-11-23 01:10:21,624 INFO L226 Difference]: Without dead ends: 77 [2018-11-23 01:10:21,624 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 01:10:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-23 01:10:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2018-11-23 01:10:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-23 01:10:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2018-11-23 01:10:21,638 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 34 [2018-11-23 01:10:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:21,638 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2018-11-23 01:10:21,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:10:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2018-11-23 01:10:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 01:10:21,640 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:21,640 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:21,640 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:21,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash -217091865, now seen corresponding path program 1 times [2018-11-23 01:10:21,640 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:21,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:21,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:21,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 01:10:21,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:21,689 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:21,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:21,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 01:10:21,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:21,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 12 [2018-11-23 01:10:21,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 01:10:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 01:10:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-11-23 01:10:21,799 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 12 states. [2018-11-23 01:10:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:22,120 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2018-11-23 01:10:22,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 01:10:22,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2018-11-23 01:10:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:22,122 INFO L225 Difference]: With dead ends: 115 [2018-11-23 01:10:22,122 INFO L226 Difference]: Without dead ends: 70 [2018-11-23 01:10:22,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-11-23 01:10:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-23 01:10:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2018-11-23 01:10:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-23 01:10:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2018-11-23 01:10:22,133 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 35 [2018-11-23 01:10:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:22,134 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2018-11-23 01:10:22,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 01:10:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2018-11-23 01:10:22,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-23 01:10:22,136 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:22,136 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:22,137 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:22,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:22,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1599239471, now seen corresponding path program 1 times [2018-11-23 01:10:22,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:22,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:22,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:22,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-23 01:10:22,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:22,202 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:22,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 82 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-23 01:10:22,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:22,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 14 [2018-11-23 01:10:22,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 01:10:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 01:10:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-11-23 01:10:22,316 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 14 states. [2018-11-23 01:10:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:22,496 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2018-11-23 01:10:22,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 01:10:22,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2018-11-23 01:10:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:22,498 INFO L225 Difference]: With dead ends: 138 [2018-11-23 01:10:22,498 INFO L226 Difference]: Without dead ends: 92 [2018-11-23 01:10:22,500 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-23 01:10:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-23 01:10:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2018-11-23 01:10:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-23 01:10:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2018-11-23 01:10:22,511 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 74 [2018-11-23 01:10:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:22,511 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2018-11-23 01:10:22,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 01:10:22,511 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2018-11-23 01:10:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-23 01:10:22,513 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:22,513 INFO L402 BasicCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:22,513 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:22,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1675070914, now seen corresponding path program 2 times [2018-11-23 01:10:22,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:22,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:22,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:22,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-23 01:10:22,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:10:22,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:10:22,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:10:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:10:22,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:10:22,566 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 5 states. [2018-11-23 01:10:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:22,587 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-11-23 01:10:22,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:10:22,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2018-11-23 01:10:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:22,590 INFO L225 Difference]: With dead ends: 85 [2018-11-23 01:10:22,590 INFO L226 Difference]: Without dead ends: 84 [2018-11-23 01:10:22,590 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 01:10:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-23 01:10:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-11-23 01:10:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-23 01:10:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-11-23 01:10:22,597 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 70 [2018-11-23 01:10:22,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:22,597 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-11-23 01:10:22,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:10:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-11-23 01:10:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-23 01:10:22,598 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:22,599 INFO L402 BasicCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:22,599 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:22,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:22,599 INFO L82 PathProgramCache]: Analyzing trace with hash 387590836, now seen corresponding path program 1 times [2018-11-23 01:10:22,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:22,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:22,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:22,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-23 01:10:22,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:10:22,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:10:22,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 01:10:22,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 01:10:22,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 01:10:22,643 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 5 states. [2018-11-23 01:10:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:22,669 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-11-23 01:10:22,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 01:10:22,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2018-11-23 01:10:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:22,671 INFO L225 Difference]: With dead ends: 88 [2018-11-23 01:10:22,671 INFO L226 Difference]: Without dead ends: 87 [2018-11-23 01:10:22,672 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 01:10:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-23 01:10:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2018-11-23 01:10:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-23 01:10:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-11-23 01:10:22,682 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 71 [2018-11-23 01:10:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:22,682 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-11-23 01:10:22,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 01:10:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-11-23 01:10:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-23 01:10:22,684 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:22,684 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:22,684 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:22,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1898281076, now seen corresponding path program 3 times [2018-11-23 01:10:22,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:22,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:22,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:22,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-23 01:10:22,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:22,752 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:22,769 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 01:10:22,779 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 01:10:22,779 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:22,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-23 01:10:22,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:22,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 01:10:22,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 01:10:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 01:10:22,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-23 01:10:22,820 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 9 states. [2018-11-23 01:10:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:22,861 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2018-11-23 01:10:22,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 01:10:22,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2018-11-23 01:10:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:22,862 INFO L225 Difference]: With dead ends: 106 [2018-11-23 01:10:22,862 INFO L226 Difference]: Without dead ends: 105 [2018-11-23 01:10:22,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-11-23 01:10:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-23 01:10:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2018-11-23 01:10:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-23 01:10:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2018-11-23 01:10:22,870 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 65 [2018-11-23 01:10:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:22,870 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2018-11-23 01:10:22,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 01:10:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2018-11-23 01:10:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-23 01:10:22,872 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:22,872 INFO L402 BasicCegarLoop]: trace histogram [13, 11, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:22,873 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:22,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:22,873 INFO L82 PathProgramCache]: Analyzing trace with hash -782800990, now seen corresponding path program 4 times [2018-11-23 01:10:22,873 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:22,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:22,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:22,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 118 proven. 92 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-23 01:10:22,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:22,956 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:22,963 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 01:10:22,978 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 01:10:22,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:22,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 196 proven. 121 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-23 01:10:23,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:23,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 20 [2018-11-23 01:10:23,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 01:10:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 01:10:23,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-11-23 01:10:23,112 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand 20 states. [2018-11-23 01:10:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:23,523 INFO L93 Difference]: Finished difference Result 236 states and 330 transitions. [2018-11-23 01:10:23,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 01:10:23,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 110 [2018-11-23 01:10:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:23,525 INFO L225 Difference]: With dead ends: 236 [2018-11-23 01:10:23,525 INFO L226 Difference]: Without dead ends: 157 [2018-11-23 01:10:23,527 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2018-11-23 01:10:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-23 01:10:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2018-11-23 01:10:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-11-23 01:10:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2018-11-23 01:10:23,538 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 110 [2018-11-23 01:10:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:23,538 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2018-11-23 01:10:23,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 01:10:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2018-11-23 01:10:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-23 01:10:23,539 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:23,540 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:23,540 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:23,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash 173475161, now seen corresponding path program 5 times [2018-11-23 01:10:23,540 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:23,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:23,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:23,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:23,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 156 proven. 187 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 01:10:23,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:23,736 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:23,743 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 01:10:23,767 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-23 01:10:23,767 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:23,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 128 proven. 37 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-23 01:10:23,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:23,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 27 [2018-11-23 01:10:23,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-23 01:10:23,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-23 01:10:23,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-11-23 01:10:23,869 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand 27 states. [2018-11-23 01:10:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:24,704 INFO L93 Difference]: Finished difference Result 287 states and 361 transitions. [2018-11-23 01:10:24,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 01:10:24,705 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 103 [2018-11-23 01:10:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:24,706 INFO L225 Difference]: With dead ends: 287 [2018-11-23 01:10:24,706 INFO L226 Difference]: Without dead ends: 157 [2018-11-23 01:10:24,708 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=985, Invalid=3047, Unknown=0, NotChecked=0, Total=4032 [2018-11-23 01:10:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-23 01:10:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 132. [2018-11-23 01:10:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-23 01:10:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2018-11-23 01:10:24,717 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 103 [2018-11-23 01:10:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:24,717 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2018-11-23 01:10:24,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-23 01:10:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2018-11-23 01:10:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-23 01:10:24,718 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:24,718 INFO L402 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:24,719 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:24,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1128501564, now seen corresponding path program 6 times [2018-11-23 01:10:24,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:24,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:24,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:24,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:24,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-11-23 01:10:24,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:24,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:24,816 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 01:10:24,851 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-11-23 01:10:24,851 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:24,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-11-23 01:10:24,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:24,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-11-23 01:10:24,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 01:10:24,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 01:10:24,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-11-23 01:10:24,913 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand 13 states. [2018-11-23 01:10:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:24,975 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2018-11-23 01:10:24,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 01:10:24,976 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2018-11-23 01:10:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:24,977 INFO L225 Difference]: With dead ends: 134 [2018-11-23 01:10:24,977 INFO L226 Difference]: Without dead ends: 133 [2018-11-23 01:10:24,977 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-11-23 01:10:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-23 01:10:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2018-11-23 01:10:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-23 01:10:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2018-11-23 01:10:24,985 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 116 [2018-11-23 01:10:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:24,986 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2018-11-23 01:10:24,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 01:10:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2018-11-23 01:10:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-23 01:10:24,987 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:24,987 INFO L402 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:24,988 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:24,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash -623810062, now seen corresponding path program 2 times [2018-11-23 01:10:24,988 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:24,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:24,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:24,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:24,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-11-23 01:10:25,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:25,046 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:25,057 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 01:10:25,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 01:10:25,094 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:25,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 26 proven. 56 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-11-23 01:10:25,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:25,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-11-23 01:10:25,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 01:10:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 01:10:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-23 01:10:25,201 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand 13 states. [2018-11-23 01:10:25,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:25,254 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2018-11-23 01:10:25,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 01:10:25,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2018-11-23 01:10:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:25,259 INFO L225 Difference]: With dead ends: 132 [2018-11-23 01:10:25,260 INFO L226 Difference]: Without dead ends: 130 [2018-11-23 01:10:25,260 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-11-23 01:10:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-23 01:10:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-11-23 01:10:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 01:10:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2018-11-23 01:10:25,267 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 117 [2018-11-23 01:10:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:25,267 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2018-11-23 01:10:25,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 01:10:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2018-11-23 01:10:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-23 01:10:25,269 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:25,269 INFO L402 BasicCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:25,269 INFO L423 AbstractCegarLoop]: === Iteration 14 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:25,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1226786477, now seen corresponding path program 7 times [2018-11-23 01:10:25,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:25,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:25,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:25,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:25,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2018-11-23 01:10:25,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:25,375 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/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 01:10:25,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:25,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2018-11-23 01:10:25,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:25,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-11-23 01:10:25,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 01:10:25,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 01:10:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-11-23 01:10:25,495 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 17 states. [2018-11-23 01:10:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:25,565 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2018-11-23 01:10:25,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 01:10:25,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 169 [2018-11-23 01:10:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:25,566 INFO L225 Difference]: With dead ends: 131 [2018-11-23 01:10:25,567 INFO L226 Difference]: Without dead ends: 130 [2018-11-23 01:10:25,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-11-23 01:10:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-23 01:10:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-11-23 01:10:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 01:10:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2018-11-23 01:10:25,572 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 169 [2018-11-23 01:10:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:25,573 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2018-11-23 01:10:25,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 01:10:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2018-11-23 01:10:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-23 01:10:25,574 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:25,574 INFO L402 BasicCegarLoop]: trace histogram [28, 24, 23, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 11, 11, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:25,575 INFO L423 AbstractCegarLoop]: === Iteration 15 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:25,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash -333231388, now seen corresponding path program 8 times [2018-11-23 01:10:25,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:25,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:25,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:25,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:10:25,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2018-11-23 01:10:25,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:25,749 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 01:10:25,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 01:10:25,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 01:10:25,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:25,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2018-11-23 01:10:25,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:25,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2018-11-23 01:10:25,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 01:10:25,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 01:10:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2018-11-23 01:10:25,932 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 21 states. [2018-11-23 01:10:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:26,008 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2018-11-23 01:10:26,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 01:10:26,008 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 261 [2018-11-23 01:10:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:26,010 INFO L225 Difference]: With dead ends: 131 [2018-11-23 01:10:26,010 INFO L226 Difference]: Without dead ends: 130 [2018-11-23 01:10:26,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2018-11-23 01:10:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-23 01:10:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-11-23 01:10:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 01:10:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2018-11-23 01:10:26,022 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 261 [2018-11-23 01:10:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:26,022 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2018-11-23 01:10:26,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 01:10:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2018-11-23 01:10:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-23 01:10:26,025 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:26,025 INFO L402 BasicCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:26,025 INFO L423 AbstractCegarLoop]: === Iteration 16 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:26,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1881532310, now seen corresponding path program 9 times [2018-11-23 01:10:26,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:26,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:26,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:26,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:26,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2018-11-23 01:10:26,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:26,260 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 01:10:26,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 01:10:26,353 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-11-23 01:10:26,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:26,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2018-11-23 01:10:26,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:26,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2018-11-23 01:10:26,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 01:10:26,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 01:10:26,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-11-23 01:10:26,546 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 25 states. [2018-11-23 01:10:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:26,616 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-11-23 01:10:26,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 01:10:26,617 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 412 [2018-11-23 01:10:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:26,618 INFO L225 Difference]: With dead ends: 131 [2018-11-23 01:10:26,618 INFO L226 Difference]: Without dead ends: 130 [2018-11-23 01:10:26,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-11-23 01:10:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-23 01:10:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-11-23 01:10:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 01:10:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2018-11-23 01:10:26,625 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 412 [2018-11-23 01:10:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:26,626 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2018-11-23 01:10:26,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 01:10:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2018-11-23 01:10:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-11-23 01:10:26,628 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:26,629 INFO L402 BasicCegarLoop]: trace histogram [68, 66, 55, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 32, 32, 21, 13, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:26,629 INFO L423 AbstractCegarLoop]: === Iteration 17 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:26,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:26,629 INFO L82 PathProgramCache]: Analyzing trace with hash 355145621, now seen corresponding path program 10 times [2018-11-23 01:10:26,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:26,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:26,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:26,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:26,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2018-11-23 01:10:27,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:27,231 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 01:10:27,238 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 01:10:27,325 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 01:10:27,325 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:27,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2018-11-23 01:10:27,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:27,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 28 [2018-11-23 01:10:27,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-23 01:10:27,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-23 01:10:27,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2018-11-23 01:10:27,644 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 29 states. [2018-11-23 01:10:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:27,735 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2018-11-23 01:10:27,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-23 01:10:27,735 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 661 [2018-11-23 01:10:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:27,737 INFO L225 Difference]: With dead ends: 131 [2018-11-23 01:10:27,737 INFO L226 Difference]: Without dead ends: 130 [2018-11-23 01:10:27,737 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2018-11-23 01:10:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-11-23 01:10:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-11-23 01:10:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-23 01:10:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2018-11-23 01:10:27,744 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 661 [2018-11-23 01:10:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:27,745 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2018-11-23 01:10:27,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-23 01:10:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2018-11-23 01:10:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2018-11-23 01:10:27,754 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:10:27,754 INFO L402 BasicCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:10:27,754 INFO L423 AbstractCegarLoop]: === Iteration 18 === [fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 01:10:27,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:10:27,754 INFO L82 PathProgramCache]: Analyzing trace with hash -642383590, now seen corresponding path program 11 times [2018-11-23 01:10:27,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:10:27,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:10:27,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:27,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:10:27,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:10:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:10:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2018-11-23 01:10:28,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 01:10:28,666 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 01:10:28,672 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 01:10:29,001 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2018-11-23 01:10:29,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 01:10:29,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 01:10:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2018-11-23 01:10:29,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 01:10:29,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 32 [2018-11-23 01:10:29,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-23 01:10:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-23 01:10:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 01:10:29,637 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand 33 states. [2018-11-23 01:10:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:10:29,735 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2018-11-23 01:10:29,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-23 01:10:29,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1067 [2018-11-23 01:10:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:10:29,737 INFO L225 Difference]: With dead ends: 130 [2018-11-23 01:10:29,737 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 01:10:29,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1283 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 01:10:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 01:10:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 01:10:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 01:10:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 01:10:29,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1067 [2018-11-23 01:10:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:10:29,739 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:10:29,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-23 01:10:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 01:10:29,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 01:10:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 01:10:30,304 WARN L180 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,380 INFO L448 ceAbstractionStarter]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L451 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (< 1 |fibonacci_#in~n|) (or (and (<= |fibonacci_#in~n| fibonacci_~n) (<= fibonacci_~n |fibonacci_#in~n|)) (< 9 |fibonacci_#in~n|))) [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L444 ceAbstractionStarter]: At program point L20-6(line 20) the Hoare annotation is: (let ((.cse3 (< 9 |fibonacci_#in~n|)) (.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse1 (<= 2 |fibonacci_#t~ret0|)) (.cse2 (<= fibonacci_~n |fibonacci_#in~n|))) (and (or (and .cse0 (<= fibonacci_~n 3)) (and .cse0 (<= |fibonacci_#t~ret0| 2) .cse1 .cse2) (< 4 |fibonacci_#in~n|)) (or (and (<= |fibonacci_#t~ret0| 8) .cse0 .cse1 .cse2) (or (< 7 |fibonacci_#in~n|) (< |fibonacci_#in~n| 7))) (or (and (<= |fibonacci_#t~ret0| 21) (<= 9 fibonacci_~n) .cse1 .cse2) (< |fibonacci_#in~n| 9) .cse3) (or (<= 1 |fibonacci_#t~ret0|) .cse3) (or (or (< 5 |fibonacci_#in~n|) (< |fibonacci_#in~n| 5)) (and (<= |fibonacci_#t~ret0| 3) .cse1 (<= 5 fibonacci_~n) .cse2)) (or (or (< |fibonacci_#in~n| 6) (< 6 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 5) (<= 6 fibonacci_~n) .cse1 .cse2)) (or (< 3 |fibonacci_#in~n|) (and (<= |fibonacci_#t~ret0| 1) (<= 2 fibonacci_~n) .cse2)) (or (and .cse0 .cse1 (<= |fibonacci_#t~ret0| 13) .cse2) (< |fibonacci_#in~n| 8) (< 8 |fibonacci_#in~n|)))) [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,381 INFO L448 ceAbstractionStarter]: For program point L20-8(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point L20-9(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 01:10:30,382 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 33) the Hoare annotation is: true [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L444 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 9 main_~x~0) (<= main_~x~0 9)) [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-23 01:10:30,382 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2018-11-23 01:10:30,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:10:30 BoogieIcfgContainer [2018-11-23 01:10:30,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 01:10:30,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 01:10:30,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 01:10:30,385 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 01:10:30,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:20" (3/4) ... [2018-11-23 01:10:30,388 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 01:10:30,393 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2018-11-23 01:10:30,393 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 01:10:30,393 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 01:10:30,397 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 01:10:30,397 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 01:10:30,397 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 01:10:30,427 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b19545b6-c436-4a3b-aec1-9516f41ffaf1/bin-2019/uautomizer/witness.graphml [2018-11-23 01:10:30,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 01:10:30,428 INFO L168 Benchmark]: Toolchain (without parser) took 10305.66 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 802.2 MB). Free memory was 960.2 MB in the beginning and 1.6 GB in the end (delta: -680.1 MB). Peak memory consumption was 122.0 MB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,429 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:10:30,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.92 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:10:30,430 INFO L168 Benchmark]: Boogie Preprocessor took 12.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,430 INFO L168 Benchmark]: RCFGBuilder took 228.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,430 INFO L168 Benchmark]: TraceAbstraction took 9828.32 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 684.2 MB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -560.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,431 INFO L168 Benchmark]: Witness Printer took 43.17 ms. Allocated memory is still 1.8 GB. Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-23 01:10:30,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.08 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 16.92 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 228.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9828.32 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 684.2 MB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -560.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. * Witness Printer took 43.17 ms. Allocated memory is still 1.8 GB. Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 6 error locations. SAFE Result, 9.7s OverallTime, 18 OverallIterations, 109 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 493 SDtfs, 1650 SDslu, 3447 SDs, 0 SdLazy, 2665 SolverSat, 566 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3929 GetRequests, 3620 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=10, 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: 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 85 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 155 PreInvPairs, 216 NumberOfFragments, 191 HoareAnnotationTreeSize, 155 FomulaSimplifications, 886 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1544 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 6640 NumberOfCodeBlocks, 6559 NumberOfCodeBlocksAsserted, 167 NumberOfCheckSat, 6609 ConstructedInterpolants, 0 QuantifiedInterpolants, 9588773 SizeOfPredicates, 26 NumberOfNonLiveVariables, 5854 ConjunctsInSsa, 599 ConjunctsInUnsatCore, 31 InterpolantComputations, 5 PerfectInterpolantSequences, 111620/137010 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...