./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 675300a4b632e073b31d1e86ab5660e0c5ab887b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:27:53,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:27:53,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:27:53,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:27:53,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:27:53,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:27:53,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:27:53,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:27:53,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:27:53,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:27:53,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:27:53,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:27:53,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:27:53,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:27:53,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:27:53,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:27:53,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:27:53,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:27:53,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:27:53,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:27:53,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:27:53,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:27:53,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:27:53,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:27:53,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:27:53,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:27:53,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:27:53,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:27:53,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:27:53,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:27:53,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:27:53,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:27:53,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:27:53,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:27:53,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:27:53,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:27:53,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:27:53,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:27:53,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:27:53,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:27:53,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:27:53,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:27:53,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:27:53,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:27:53,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:27:53,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:27:53,550 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:27:53,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:27:53,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:27:53,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:27:53,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:27:53,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:27:53,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:27:53,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:27:53,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:27:53,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:27:53,552 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:27:53,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:27:53,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:27:53,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:27:53,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:27:53,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:27:53,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:27:53,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:27:53,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:27:53,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:27:53,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:27:53,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:27:53,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:27:53,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:27:53,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:27:53,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:27:53,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:27:53,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 675300a4b632e073b31d1e86ab5660e0c5ab887b [2020-10-20 06:27:53,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:27:53,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:27:53,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:27:53,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:27:53,768 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:27:53,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2020-10-20 06:27:53,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c84d877c/33774f1df8004ff5a97fc555e802814a/FLAG39447c054 [2020-10-20 06:27:54,231 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:27:54,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2020-10-20 06:27:54,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c84d877c/33774f1df8004ff5a97fc555e802814a/FLAG39447c054 [2020-10-20 06:27:54,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c84d877c/33774f1df8004ff5a97fc555e802814a [2020-10-20 06:27:54,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:27:54,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:27:54,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:27:54,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:27:54,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:27:54,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:54,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f800851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54, skipping insertion in model container [2020-10-20 06:27:54,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:54,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:27:54,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:27:54,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:27:54,937 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:27:54,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:27:54,970 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:27:54,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54 WrapperNode [2020-10-20 06:27:54,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:27:54,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:27:54,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:27:54,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:27:54,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:54,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:27:55,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:27:55,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:27:55,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:27:55,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... [2020-10-20 06:27:55,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:27:55,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:27:55,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:27:55,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:27:55,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:27:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-20 06:27:55,100 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-20 06:27:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:27:55,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:27:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:27:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:27:55,444 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:27:55,444 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:27:55,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:27:55 BoogieIcfgContainer [2020-10-20 06:27:55,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:27:55,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:27:55,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:27:55,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:27:55,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:27:54" (1/3) ... [2020-10-20 06:27:55,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69018fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:27:55, skipping insertion in model container [2020-10-20 06:27:55,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:27:54" (2/3) ... [2020-10-20 06:27:55,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69018fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:27:55, skipping insertion in model container [2020-10-20 06:27:55,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:27:55" (3/3) ... [2020-10-20 06:27:55,458 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-10-20 06:27:55,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:27:55,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:27:55,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:27:55,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:27:55,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:27:55,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:27:55,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:27:55,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:27:55,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:27:55,551 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:27:55,551 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:27:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-20 06:27:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:27:55,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:55,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:55,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2020-10-20 06:27:55,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:55,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486839051] [2020-10-20 06:27:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:27:55,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486839051] [2020-10-20 06:27:55,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:27:55,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:27:55,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484683634] [2020-10-20 06:27:55,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:27:55,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:55,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:27:55,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:27:55,918 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-10-20 06:27:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:56,029 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-20 06:27:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:27:56,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:27:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:56,041 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:27:56,041 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:27:56,045 INFO L677 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 [2020-10-20 06:27:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:27:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 06:27:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:27:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-20 06:27:56,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2020-10-20 06:27:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:56,089 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-20 06:27:56,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:27:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-20 06:27:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:27:56,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:56,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:56,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:27:56,092 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2020-10-20 06:27:56,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:56,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145626550] [2020-10-20 06:27:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:27:56,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145626550] [2020-10-20 06:27:56,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:27:56,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:27:56,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932985950] [2020-10-20 06:27:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:27:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:27:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:27:56,139 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2020-10-20 06:27:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:56,170 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-10-20 06:27:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:27:56,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 06:27:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:56,173 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:27:56,173 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:27:56,174 INFO L677 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 [2020-10-20 06:27:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:27:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-20 06:27:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:27:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-20 06:27:56,183 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2020-10-20 06:27:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:56,183 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-20 06:27:56,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:27:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-20 06:27:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:27:56,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:56,185 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:56,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:27:56,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2020-10-20 06:27:56,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:56,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217081768] [2020-10-20 06:27:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:27:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 06:27:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-20 06:27:56,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217081768] [2020-10-20 06:27:56,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:27:56,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:27:56,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278120655] [2020-10-20 06:27:56,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:27:56,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:27:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:27:56,336 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-20 06:27:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:56,383 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-20 06:27:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:27:56,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-20 06:27:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:56,385 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:27:56,385 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 06:27:56,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:27:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 06:27:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-10-20 06:27:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:27:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-20 06:27:56,397 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2020-10-20 06:27:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:56,398 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-20 06:27:56,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:27:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-20 06:27:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:27:56,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:56,400 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:56,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:27:56,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1123986896, now seen corresponding path program 1 times [2020-10-20 06:27:56,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:56,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252765805] [2020-10-20 06:27:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:27:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 06:27:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-20 06:27:56,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252765805] [2020-10-20 06:27:56,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554662107] [2020-10-20 06:27:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:56,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:27:56,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:27:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:27:56,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:27:56,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-10-20 06:27:56,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612962998] [2020-10-20 06:27:56,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:27:56,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:56,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:27:56,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:27:56,763 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 13 states. [2020-10-20 06:27:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:57,287 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2020-10-20 06:27:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:27:57,288 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-20 06:27:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:57,291 INFO L225 Difference]: With dead ends: 126 [2020-10-20 06:27:57,291 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 06:27:57,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:27:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 06:27:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-20 06:27:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 06:27:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2020-10-20 06:27:57,326 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 30 [2020-10-20 06:27:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:57,327 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2020-10-20 06:27:57,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:27:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2020-10-20 06:27:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:27:57,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:57,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:57,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:57,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1103541404, now seen corresponding path program 1 times [2020-10-20 06:27:57,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381654945] [2020-10-20 06:27:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:27:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:27:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 06:27:57,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381654945] [2020-10-20 06:27:57,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:27:57,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:27:57,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673662894] [2020-10-20 06:27:57,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:27:57,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:57,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:27:57,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:27:57,649 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand 5 states. [2020-10-20 06:27:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:57,695 INFO L93 Difference]: Finished difference Result 107 states and 159 transitions. [2020-10-20 06:27:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:27:57,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 06:27:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:57,699 INFO L225 Difference]: With dead ends: 107 [2020-10-20 06:27:57,699 INFO L226 Difference]: Without dead ends: 105 [2020-10-20 06:27:57,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:27:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-20 06:27:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-10-20 06:27:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 06:27:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions. [2020-10-20 06:27:57,727 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 31 [2020-10-20 06:27:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:57,727 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 145 transitions. [2020-10-20 06:27:57,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:27:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions. [2020-10-20 06:27:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:27:57,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:57,730 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:57,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:27:57,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1534696655, now seen corresponding path program 2 times [2020-10-20 06:27:57,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:57,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692186989] [2020-10-20 06:27:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-20 06:27:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-20 06:27:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-20 06:27:57,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692186989] [2020-10-20 06:27:57,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548653817] [2020-10-20 06:27:57,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:57,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:27:57,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:27:57,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:27:57,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:27:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-20 06:27:57,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:27:57,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-10-20 06:27:57,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658414685] [2020-10-20 06:27:57,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:27:57,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:57,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:27:57,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:27:57,965 INFO L87 Difference]: Start difference. First operand 97 states and 145 transitions. Second operand 5 states. [2020-10-20 06:27:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:58,005 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-10-20 06:27:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:27:58,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-20 06:27:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:58,009 INFO L225 Difference]: With dead ends: 105 [2020-10-20 06:27:58,009 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:27:58,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:27:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:27:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-10-20 06:27:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 06:27:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 147 transitions. [2020-10-20 06:27:58,037 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 147 transitions. Word has length 36 [2020-10-20 06:27:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:58,037 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 147 transitions. [2020-10-20 06:27:58,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:27:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 147 transitions. [2020-10-20 06:27:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:27:58,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:58,040 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:27:58,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:58,254 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:58,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 215196684, now seen corresponding path program 1 times [2020-10-20 06:27:58,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:58,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502648077] [2020-10-20 06:27:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:58,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:27:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:58,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-20 06:27:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-20 06:27:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-20 06:27:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502648077] [2020-10-20 06:27:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581117747] [2020-10-20 06:27:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:58,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:27:58,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:27:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-20 06:27:58,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:27:58,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2020-10-20 06:27:58,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517389115] [2020-10-20 06:27:58,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:27:58,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:58,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:27:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:27:58,506 INFO L87 Difference]: Start difference. First operand 99 states and 147 transitions. Second operand 13 states. [2020-10-20 06:27:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:59,028 INFO L93 Difference]: Finished difference Result 186 states and 280 transitions. [2020-10-20 06:27:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:27:59,029 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-20 06:27:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:59,031 INFO L225 Difference]: With dead ends: 186 [2020-10-20 06:27:59,031 INFO L226 Difference]: Without dead ends: 119 [2020-10-20 06:27:59,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:27:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-20 06:27:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-10-20 06:27:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:27:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 155 transitions. [2020-10-20 06:27:59,051 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 155 transitions. Word has length 46 [2020-10-20 06:27:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:59,052 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 155 transitions. [2020-10-20 06:27:59,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:27:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 155 transitions. [2020-10-20 06:27:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:27:59,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:59,057 INFO L422 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] [2020-10-20 06:27:59,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:59,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash -693319985, now seen corresponding path program 1 times [2020-10-20 06:27:59,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:59,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421207294] [2020-10-20 06:27:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:27:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:27:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:27:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:27:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-20 06:27:59,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421207294] [2020-10-20 06:27:59,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982271545] [2020-10-20 06:27:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:59,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:27:59,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:27:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-20 06:27:59,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:27:59,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 16 [2020-10-20 06:27:59,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796017732] [2020-10-20 06:27:59,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 06:27:59,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 06:27:59,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:27:59,621 INFO L87 Difference]: Start difference. First operand 101 states and 155 transitions. Second operand 16 states. [2020-10-20 06:28:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:00,140 INFO L93 Difference]: Finished difference Result 262 states and 422 transitions. [2020-10-20 06:28:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:28:00,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-20 06:28:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:00,146 INFO L225 Difference]: With dead ends: 262 [2020-10-20 06:28:00,149 INFO L226 Difference]: Without dead ends: 176 [2020-10-20 06:28:00,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:28:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-20 06:28:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2020-10-20 06:28:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 06:28:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 232 transitions. [2020-10-20 06:28:00,205 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 232 transitions. Word has length 62 [2020-10-20 06:28:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:00,208 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 232 transitions. [2020-10-20 06:28:00,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 06:28:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 232 transitions. [2020-10-20 06:28:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:28:00,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:00,215 INFO L422 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] [2020-10-20 06:28:00,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:00,430 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:00,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1162938815, now seen corresponding path program 2 times [2020-10-20 06:28:00,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:00,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15739538] [2020-10-20 06:28:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:00,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:28:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-20 06:28:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 06:28:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 107 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 06:28:00,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15739538] [2020-10-20 06:28:00,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537272225] [2020-10-20 06:28:00,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:00,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:28:00,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:00,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:28:00,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 58 proven. 48 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-20 06:28:00,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:00,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-20 06:28:00,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533745580] [2020-10-20 06:28:00,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:28:00,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:28:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:28:00,661 INFO L87 Difference]: Start difference. First operand 156 states and 232 transitions. Second operand 14 states. [2020-10-20 06:28:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:00,924 INFO L93 Difference]: Finished difference Result 285 states and 425 transitions. [2020-10-20 06:28:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:28:00,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-20 06:28:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:00,928 INFO L225 Difference]: With dead ends: 285 [2020-10-20 06:28:00,928 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:28:00,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:28:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:28:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-20 06:28:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 06:28:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 215 transitions. [2020-10-20 06:28:00,946 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 215 transitions. Word has length 62 [2020-10-20 06:28:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:00,947 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 215 transitions. [2020-10-20 06:28:00,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:28:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 215 transitions. [2020-10-20 06:28:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-20 06:28:00,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:00,949 INFO L422 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] [2020-10-20 06:28:01,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:01,165 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1954493464, now seen corresponding path program 1 times [2020-10-20 06:28:01,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:01,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623999709] [2020-10-20 06:28:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-20 06:28:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-20 06:28:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-20 06:28:01,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623999709] [2020-10-20 06:28:01,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391684685] [2020-10-20 06:28:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:01,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:28:01,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 70 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-20 06:28:01,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:01,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15] total 18 [2020-10-20 06:28:01,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181657695] [2020-10-20 06:28:01,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:28:01,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:01,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:28:01,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:28:01,453 INFO L87 Difference]: Start difference. First operand 149 states and 215 transitions. Second operand 18 states. [2020-10-20 06:28:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:01,991 INFO L93 Difference]: Finished difference Result 335 states and 505 transitions. [2020-10-20 06:28:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:28:01,992 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-20 06:28:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:01,996 INFO L225 Difference]: With dead ends: 335 [2020-10-20 06:28:01,999 INFO L226 Difference]: Without dead ends: 201 [2020-10-20 06:28:02,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-20 06:28:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-20 06:28:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 175. [2020-10-20 06:28:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-20 06:28:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 244 transitions. [2020-10-20 06:28:02,035 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 244 transitions. Word has length 68 [2020-10-20 06:28:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:02,036 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 244 transitions. [2020-10-20 06:28:02,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:28:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 244 transitions. [2020-10-20 06:28:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-20 06:28:02,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:02,041 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:02,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:02,250 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1087520634, now seen corresponding path program 3 times [2020-10-20 06:28:02,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:02,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653518872] [2020-10-20 06:28:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-20 06:28:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-20 06:28:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 06:28:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 06:28:02,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653518872] [2020-10-20 06:28:02,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530609019] [2020-10-20 06:28:02,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:02,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 06:28:02,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:28:02,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-20 06:28:02,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:02,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2020-10-20 06:28:02,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006168333] [2020-10-20 06:28:02,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 06:28:02,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:02,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 06:28:02,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:28:02,528 INFO L87 Difference]: Start difference. First operand 175 states and 244 transitions. Second operand 20 states. [2020-10-20 06:28:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:02,993 INFO L93 Difference]: Finished difference Result 347 states and 517 transitions. [2020-10-20 06:28:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:28:02,994 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-20 06:28:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:02,999 INFO L225 Difference]: With dead ends: 347 [2020-10-20 06:28:02,999 INFO L226 Difference]: Without dead ends: 187 [2020-10-20 06:28:03,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2020-10-20 06:28:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-20 06:28:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2020-10-20 06:28:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-20 06:28:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2020-10-20 06:28:03,018 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 68 [2020-10-20 06:28:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:03,019 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2020-10-20 06:28:03,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 06:28:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2020-10-20 06:28:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-20 06:28:03,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:03,022 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:03,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:03,235 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:03,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1692692973, now seen corresponding path program 4 times [2020-10-20 06:28:03,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:03,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105304217] [2020-10-20 06:28:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-20 06:28:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-20 06:28:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 06:28:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 2 proven. 182 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:28:03,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105304217] [2020-10-20 06:28:03,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086135481] [2020-10-20 06:28:03,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:03,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:28:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:03,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:28:03,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 73 proven. 108 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-20 06:28:03,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:03,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-20 06:28:03,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752501361] [2020-10-20 06:28:03,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:28:03,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:03,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:28:03,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:28:03,512 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand 18 states. [2020-10-20 06:28:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:03,970 INFO L93 Difference]: Finished difference Result 379 states and 537 transitions. [2020-10-20 06:28:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:28:03,971 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 73 [2020-10-20 06:28:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:03,973 INFO L225 Difference]: With dead ends: 379 [2020-10-20 06:28:03,974 INFO L226 Difference]: Without dead ends: 217 [2020-10-20 06:28:03,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-10-20 06:28:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-20 06:28:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 201. [2020-10-20 06:28:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-20 06:28:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 272 transitions. [2020-10-20 06:28:03,997 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 272 transitions. Word has length 73 [2020-10-20 06:28:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:03,998 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 272 transitions. [2020-10-20 06:28:03,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:28:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 272 transitions. [2020-10-20 06:28:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-20 06:28:04,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:04,001 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 9, 9, 9, 9, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:04,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 06:28:04,216 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:04,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:04,217 INFO L82 PathProgramCache]: Analyzing trace with hash -16144272, now seen corresponding path program 5 times [2020-10-20 06:28:04,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073277434] [2020-10-20 06:28:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:28:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-20 06:28:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-20 06:28:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 47 proven. 282 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-20 06:28:04,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073277434] [2020-10-20 06:28:04,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411957350] [2020-10-20 06:28:04,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:04,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-20 06:28:04,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:04,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:28:04,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 1 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-10-20 06:28:04,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:04,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 23 [2020-10-20 06:28:04,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203558347] [2020-10-20 06:28:04,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 06:28:04,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 06:28:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:28:04,578 INFO L87 Difference]: Start difference. First operand 201 states and 272 transitions. Second operand 23 states. [2020-10-20 06:28:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:05,156 INFO L93 Difference]: Finished difference Result 441 states and 667 transitions. [2020-10-20 06:28:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 06:28:05,157 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 95 [2020-10-20 06:28:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:05,159 INFO L225 Difference]: With dead ends: 441 [2020-10-20 06:28:05,159 INFO L226 Difference]: Without dead ends: 255 [2020-10-20 06:28:05,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:28:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-20 06:28:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 224. [2020-10-20 06:28:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-20 06:28:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 298 transitions. [2020-10-20 06:28:05,178 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 298 transitions. Word has length 95 [2020-10-20 06:28:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:05,179 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 298 transitions. [2020-10-20 06:28:05,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 06:28:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 298 transitions. [2020-10-20 06:28:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-20 06:28:05,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:05,180 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:05,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:05,396 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1709732714, now seen corresponding path program 6 times [2020-10-20 06:28:05,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:05,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988922453] [2020-10-20 06:28:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:28:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-20 06:28:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-20 06:28:05,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988922453] [2020-10-20 06:28:05,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540666074] [2020-10-20 06:28:05,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:05,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-20 06:28:05,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:05,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:28:05,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-20 06:28:05,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:05,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-10-20 06:28:05,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172642535] [2020-10-20 06:28:05,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:28:05,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:05,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:28:05,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:28:05,569 INFO L87 Difference]: Start difference. First operand 224 states and 298 transitions. Second operand 10 states. [2020-10-20 06:28:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:05,672 INFO L93 Difference]: Finished difference Result 276 states and 384 transitions. [2020-10-20 06:28:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:28:05,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-20 06:28:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:05,676 INFO L225 Difference]: With dead ends: 276 [2020-10-20 06:28:05,676 INFO L226 Difference]: Without dead ends: 275 [2020-10-20 06:28:05,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:28:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-20 06:28:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2020-10-20 06:28:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-20 06:28:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 344 transitions. [2020-10-20 06:28:05,696 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 344 transitions. Word has length 80 [2020-10-20 06:28:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:05,696 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 344 transitions. [2020-10-20 06:28:05,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:28:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 344 transitions. [2020-10-20 06:28:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-20 06:28:05,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:05,698 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:05,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:05,923 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash -701341930, now seen corresponding path program 2 times [2020-10-20 06:28:05,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:05,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404339400] [2020-10-20 06:28:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-20 06:28:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-20 06:28:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-20 06:28:05,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404339400] [2020-10-20 06:28:05,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:05,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:05,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658333271] [2020-10-20 06:28:05,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:05,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:05,989 INFO L87 Difference]: Start difference. First operand 243 states and 344 transitions. Second operand 5 states. [2020-10-20 06:28:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:06,026 INFO L93 Difference]: Finished difference Result 255 states and 358 transitions. [2020-10-20 06:28:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:28:06,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-20 06:28:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:06,029 INFO L225 Difference]: With dead ends: 255 [2020-10-20 06:28:06,029 INFO L226 Difference]: Without dead ends: 254 [2020-10-20 06:28:06,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-20 06:28:06,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2020-10-20 06:28:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-20 06:28:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 356 transitions. [2020-10-20 06:28:06,050 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 356 transitions. Word has length 93 [2020-10-20 06:28:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:06,050 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 356 transitions. [2020-10-20 06:28:06,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 356 transitions. [2020-10-20 06:28:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-20 06:28:06,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:06,053 INFO L422 BasicCegarLoop]: trace histogram [17, 15, 12, 12, 12, 12, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2020-10-20 06:28:06,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:28:06,053 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:06,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1376183854, now seen corresponding path program 7 times [2020-10-20 06:28:06,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:06,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755302184] [2020-10-20 06:28:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-20 06:28:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-20 06:28:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 226 proven. 287 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-20 06:28:06,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755302184] [2020-10-20 06:28:06,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504641140] [2020-10-20 06:28:06,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-20 06:28:06,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 494 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-20 06:28:06,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:06,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 24 [2020-10-20 06:28:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127878742] [2020-10-20 06:28:06,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 06:28:06,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 06:28:06,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:28:06,541 INFO L87 Difference]: Start difference. First operand 253 states and 356 transitions. Second operand 24 states. [2020-10-20 06:28:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:07,222 INFO L93 Difference]: Finished difference Result 393 states and 541 transitions. [2020-10-20 06:28:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-20 06:28:07,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 131 [2020-10-20 06:28:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:07,224 INFO L225 Difference]: With dead ends: 393 [2020-10-20 06:28:07,224 INFO L226 Difference]: Without dead ends: 142 [2020-10-20 06:28:07,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=557, Invalid=1335, Unknown=0, NotChecked=0, Total=1892 [2020-10-20 06:28:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-20 06:28:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2020-10-20 06:28:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-20 06:28:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2020-10-20 06:28:07,236 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 131 [2020-10-20 06:28:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:07,236 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2020-10-20 06:28:07,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 06:28:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2020-10-20 06:28:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-20 06:28:07,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:07,238 INFO L422 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] [2020-10-20 06:28:07,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:28:07,452 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:07,452 INFO L82 PathProgramCache]: Analyzing trace with hash 184820579, now seen corresponding path program 8 times [2020-10-20 06:28:07,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:07,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626797899] [2020-10-20 06:28:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-20 06:28:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-20 06:28:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-20 06:28:07,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626797899] [2020-10-20 06:28:07,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150433573] [2020-10-20 06:28:07,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:07,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:28:07,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:28:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-20 06:28:07,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:07,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-10-20 06:28:07,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27053366] [2020-10-20 06:28:07,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:28:07,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:28:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:28:07,774 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand 13 states. [2020-10-20 06:28:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:07,866 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2020-10-20 06:28:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:28:07,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-20 06:28:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:07,869 INFO L225 Difference]: With dead ends: 134 [2020-10-20 06:28:07,870 INFO L226 Difference]: Without dead ends: 133 [2020-10-20 06:28:07,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:28:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-20 06:28:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2020-10-20 06:28:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-20 06:28:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2020-10-20 06:28:07,882 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 113 [2020-10-20 06:28:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:07,882 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2020-10-20 06:28:07,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:28:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2020-10-20 06:28:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-20 06:28:07,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:07,885 INFO L422 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] [2020-10-20 06:28:08,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:28:08,098 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1434470707, now seen corresponding path program 3 times [2020-10-20 06:28:08,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:08,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615003983] [2020-10-20 06:28:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-20 06:28:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-20 06:28:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-20 06:28:08,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615003983] [2020-10-20 06:28:08,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145793045] [2020-10-20 06:28:08,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:08,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 06:28:08,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:28:08,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-20 06:28:08,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:08,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2020-10-20 06:28:08,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365462654] [2020-10-20 06:28:08,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:28:08,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:28:08,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:28:08,378 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand 13 states. [2020-10-20 06:28:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:08,462 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2020-10-20 06:28:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:28:08,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-20 06:28:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:08,464 INFO L225 Difference]: With dead ends: 132 [2020-10-20 06:28:08,464 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 06:28:08,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:28:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 06:28:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-20 06:28:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:28:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2020-10-20 06:28:08,473 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 114 [2020-10-20 06:28:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:08,473 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2020-10-20 06:28:08,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:28:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2020-10-20 06:28:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-20 06:28:08,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:08,476 INFO L422 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] [2020-10-20 06:28:08,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:28:08,690 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1759322589, now seen corresponding path program 9 times [2020-10-20 06:28:08,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:08,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560805450] [2020-10-20 06:28:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-20 06:28:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-20 06:28:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-10-20 06:28:08,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560805450] [2020-10-20 06:28:08,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002231] [2020-10-20 06:28:08,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:09,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-20 06:28:09,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:09,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-20 06:28:09,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-10-20 06:28:09,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:09,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2020-10-20 06:28:09,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961966375] [2020-10-20 06:28:09,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:28:09,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:28:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:28:09,284 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 17 states. [2020-10-20 06:28:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:09,355 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-20 06:28:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:28:09,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-10-20 06:28:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:09,357 INFO L225 Difference]: With dead ends: 131 [2020-10-20 06:28:09,358 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 06:28:09,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:28:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 06:28:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-20 06:28:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:28:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2020-10-20 06:28:09,366 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 166 [2020-10-20 06:28:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:09,367 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2020-10-20 06:28:09,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:28:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2020-10-20 06:28:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-20 06:28:09,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:09,373 INFO L422 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] [2020-10-20 06:28:09,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:09,587 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:09,587 INFO L82 PathProgramCache]: Analyzing trace with hash 354520261, now seen corresponding path program 10 times [2020-10-20 06:28:09,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:09,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797940618] [2020-10-20 06:28:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 06:28:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-20 06:28:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-10-20 06:28:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797940618] [2020-10-20 06:28:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671501755] [2020-10-20 06:28:10,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:10,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:28:10,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:10,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 49 conjunts are in the unsatisfiable core [2020-10-20 06:28:10,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 272 proven. 389 refuted. 0 times theorem prover too weak. 1666 trivial. 0 not checked. [2020-10-20 06:28:10,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:10,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 20 [2020-10-20 06:28:10,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423404135] [2020-10-20 06:28:10,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-20 06:28:10,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:10,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-20 06:28:10,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:28:10,455 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 21 states. [2020-10-20 06:28:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:10,551 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2020-10-20 06:28:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:28:10,553 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 258 [2020-10-20 06:28:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:10,555 INFO L225 Difference]: With dead ends: 131 [2020-10-20 06:28:10,555 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 06:28:10,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:28:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 06:28:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-20 06:28:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:28:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2020-10-20 06:28:10,564 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 258 [2020-10-20 06:28:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:10,568 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2020-10-20 06:28:10,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-20 06:28:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2020-10-20 06:28:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-20 06:28:10,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:10,575 INFO L422 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] [2020-10-20 06:28:10,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:10,788 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash 703496626, now seen corresponding path program 11 times [2020-10-20 06:28:10,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:10,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972634879] [2020-10-20 06:28:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:10,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-20 06:28:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-20 06:28:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-10-20 06:28:11,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972634879] [2020-10-20 06:28:11,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593875699] [2020-10-20 06:28:11,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:12,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2020-10-20 06:28:12,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:12,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 81 conjunts are in the unsatisfiable core [2020-10-20 06:28:12,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2020-10-20 06:28:12,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:12,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2020-10-20 06:28:12,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190446655] [2020-10-20 06:28:12,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-20 06:28:12,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-20 06:28:12,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-10-20 06:28:12,654 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 25 states. [2020-10-20 06:28:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:12,742 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2020-10-20 06:28:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:28:12,743 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 409 [2020-10-20 06:28:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:12,745 INFO L225 Difference]: With dead ends: 131 [2020-10-20 06:28:12,745 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 06:28:12,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-10-20 06:28:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 06:28:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-20 06:28:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:28:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2020-10-20 06:28:12,753 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 409 [2020-10-20 06:28:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:12,754 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2020-10-20 06:28:12,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-20 06:28:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2020-10-20 06:28:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-20 06:28:12,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:12,771 INFO L422 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] [2020-10-20 06:28:12,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:12,985 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash 111724450, now seen corresponding path program 12 times [2020-10-20 06:28:12,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:12,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766532694] [2020-10-20 06:28:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-20 06:28:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-10-20 06:28:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-10-20 06:28:14,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766532694] [2020-10-20 06:28:14,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369175412] [2020-10-20 06:28:14,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:15,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2020-10-20 06:28:15,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:28:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 133 conjunts are in the unsatisfiable core [2020-10-20 06:28:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15678 backedges. 2390 proven. 2946 refuted. 0 times theorem prover too weak. 10342 trivial. 0 not checked. [2020-10-20 06:28:15,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:15,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 28 [2020-10-20 06:28:15,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729847984] [2020-10-20 06:28:15,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-20 06:28:15,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-20 06:28:15,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:28:15,880 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 29 states. [2020-10-20 06:28:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:15,997 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-10-20 06:28:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 06:28:16,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 658 [2020-10-20 06:28:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:16,003 INFO L225 Difference]: With dead ends: 131 [2020-10-20 06:28:16,005 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 06:28:16,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:28:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 06:28:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-20 06:28:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:28:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2020-10-20 06:28:16,018 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 658 [2020-10-20 06:28:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:16,022 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2020-10-20 06:28:16,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-20 06:28:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2020-10-20 06:28:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2020-10-20 06:28:16,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:16,034 INFO L422 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] [2020-10-20 06:28:16,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-20 06:28:16,255 INFO L429 AbstractCegarLoop]: === Iteration 23 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:16,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1256529780, now seen corresponding path program 13 times [2020-10-20 06:28:16,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:16,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787648696] [2020-10-20 06:28:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 06:28:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-20 06:28:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:17,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-20 06:28:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-20 06:28:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-20 06:28:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-20 06:28:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 06:28:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-20 06:28:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-20 06:28:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-20 06:28:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-20 06:28:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-10-20 06:28:20,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787648696] [2020-10-20 06:28:20,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869123734] [2020-10-20 06:28:20,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:28:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:20,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 217 conjunts are in the unsatisfiable core [2020-10-20 06:28:20,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2020-10-20 06:28:21,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:21,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 32 [2020-10-20 06:28:21,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248444597] [2020-10-20 06:28:21,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-20 06:28:21,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:21,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-20 06:28:21,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:28:21,702 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand 33 states. [2020-10-20 06:28:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:21,824 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2020-10-20 06:28:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 06:28:21,825 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1064 [2020-10-20 06:28:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:21,827 INFO L225 Difference]: With dead ends: 130 [2020-10-20 06:28:21,828 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:28:21,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:28:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:28:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:28:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:28:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:28:21,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2020-10-20 06:28:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:21,831 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:28:21,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-20 06:28:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:28:21,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:28:22,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-20 06:28:22,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:28:22,552 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 11 [2020-10-20 06:28:23,030 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-10-20 06:28:23,045 INFO L274 CegarLoopResult]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2020-10-20 06:28:23,046 INFO L274 CegarLoopResult]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,047 INFO L274 CegarLoopResult]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,047 INFO L277 CegarLoopResult]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2020-10-20 06:28:23,047 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,048 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,048 INFO L270 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|))) [2020-10-20 06:28:23,048 INFO L274 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,048 INFO L274 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,049 INFO L274 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,049 INFO L270 CegarLoopResult]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse2 (<= fibonacci_~n |fibonacci_#in~n|)) (.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= 2 |fibonacci_#t~ret7|))) (and (or (and (<= |fibonacci_#t~ret7| 1) .cse0 (<= 1 |fibonacci_#t~ret7|)) (not (<= |fibonacci_#in~n| 3))) (not (<= |fibonacci_#in~n| 1)) (or (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret7| 5) .cse0 .cse1)) (or (and (<= |fibonacci_#t~ret7| 3) .cse0 .cse1) (not (<= |fibonacci_#in~n| 5)) (not (<= 5 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#t~ret7| 21) (<= 9 fibonacci_~n) .cse1 .cse2) (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|))) (or (not (<= 4 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4)) (and (<= |fibonacci_#t~ret7| 2) (<= 4 fibonacci_~n) .cse1 .cse2)) (or (and (<= |fibonacci_#t~ret7| 13) .cse0 .cse1) (not (<= |fibonacci_#in~n| 8)) (not (<= 8 |fibonacci_#in~n|))) (or (and (<= |fibonacci_#t~ret7| 8) .cse0 .cse1) (not (<= 7 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 7))))) [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point L22-7(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point L22-8(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point L22-9(line 22) no Hoare annotation was computed. [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:28:23,050 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:28:23,051 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-20 06:28:23,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:28:23,051 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) [2020-10-20 06:28:23,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:28:23,052 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-20 06:28:23,052 INFO L270 CegarLoopResult]: At program point L27(lines 27 35) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 9) [2020-10-20 06:28:23,052 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 06:28:23,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:23 BoogieIcfgContainer [2020-10-20 06:28:23,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:28:23,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:28:23,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:28:23,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:28:23,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:27:55" (3/4) ... [2020-10-20 06:28:23,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:28:23,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2020-10-20 06:28:23,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:28:23,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:28:23,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:23,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:23,133 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:28:23,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:28:23,135 INFO L168 Benchmark]: Toolchain (without parser) took 28507.78 ms. Allocated memory was 34.6 MB in the beginning and 489.7 MB in the end (delta: 455.1 MB). Free memory was 6.9 MB in the beginning and 75.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 386.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,135 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 34.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.66 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 20.2 MB in the beginning and 28.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 45.1 MB. Free memory was 27.9 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,137 INFO L168 Benchmark]: Boogie Preprocessor took 21.74 ms. Allocated memory is still 45.1 MB. Free memory was 26.4 MB in the beginning and 25.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,137 INFO L168 Benchmark]: RCFGBuilder took 414.74 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 25.2 MB in the beginning and 25.2 MB in the end (delta: -19.8 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,138 INFO L168 Benchmark]: TraceAbstraction took 27622.64 ms. Allocated memory was 47.2 MB in the beginning and 489.7 MB in the end (delta: 442.5 MB). Free memory was 24.8 MB in the beginning and 84.4 MB in the end (delta: -59.6 MB). Peak memory consumption was 382.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,138 INFO L168 Benchmark]: Witness Printer took 61.72 ms. Allocated memory is still 489.7 MB. Free memory was 84.4 MB in the beginning and 75.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:23,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 34.6 MB. Free memory was 11.9 MB in the beginning and 11.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 329.66 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 20.2 MB in the beginning and 28.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 45.1 MB. Free memory was 27.9 MB in the beginning and 26.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.74 ms. Allocated memory is still 45.1 MB. Free memory was 26.4 MB in the beginning and 25.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 414.74 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 25.2 MB in the beginning and 25.2 MB in the end (delta: -19.8 kB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 27622.64 ms. Allocated memory was 47.2 MB in the beginning and 489.7 MB in the end (delta: 442.5 MB). Free memory was 24.8 MB in the beginning and 84.4 MB in the end (delta: -59.6 MB). Peak memory consumption was 382.9 MB. Max. memory is 14.3 GB. * Witness Printer took 61.72 ms. Allocated memory is still 489.7 MB. Free memory was 84.4 MB in the beginning and 75.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: x <= 9 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.4s, OverallIterations: 23, TraceHistogramMax: 109, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 669 SDtfs, 2281 SDslu, 3293 SDs, 0 SdLazy, 4423 SolverSat, 730 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4969 GetRequests, 4577 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 205 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 479 PreInvPairs, 529 NumberOfFragments, 164 HoareAnnotationTreeSize, 479 FomulaSimplifications, 740 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 880 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 7234 NumberOfCodeBlocks, 7005 NumberOfCodeBlocksAsserted, 147 NumberOfCheckSat, 7193 ConstructedInterpolants, 0 QuantifiedInterpolants, 9618261 SizeOfPredicates, 52 NumberOfNonLiveVariables, 6583 ConjunctsInSsa, 651 ConjunctsInUnsatCore, 41 InterpolantComputations, 6 PerfectInterpolantSequences, 112990/139245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...