./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 2329fc70 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_1.5.800.v20200727-1323.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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:32:31,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:32:31,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:32:31,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:32:31,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:32:31,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:32:31,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:32:31,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:32:31,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:32:31,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:32:31,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:32:31,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:32:31,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:32:31,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:32:31,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:32:31,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:32:31,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:32:31,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:32:31,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:32:31,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:32:31,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:32:31,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:32:31,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:32:31,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:32:31,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:32:31,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:32:31,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:32:31,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:32:31,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:32:31,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:32:31,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:32:31,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:32:31,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:32:31,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:32:31,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:32:31,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:32:31,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:32:31,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:32:31,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:32:31,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:32:31,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:32:31,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-14 02:32:31,628 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:32:31,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:32:31,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:32:31,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:32:31,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:32:31,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:32:31,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:32:31,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:32:31,634 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:32:31,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:32:31,635 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:32:31,635 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:32:31,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-14 02:32:31,636 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 02:32:31,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:32:31,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:32:31,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:32:31,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:32:31,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:32:31,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:32:31,640 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:32:31,640 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2023-02-14 02:32:31,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:32:31,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:32:31,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:32:31,885 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:32:31,885 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:32:31,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2023-02-14 02:32:32,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:32:33,130 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:32:33,130 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2023-02-14 02:32:33,134 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7a2bbdf/26f8ac4621b44c91ab6243d8481cebc5/FLAGe3245758d [2023-02-14 02:32:33,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef7a2bbdf/26f8ac4621b44c91ab6243d8481cebc5 [2023-02-14 02:32:33,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:32:33,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:32:33,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:32:33,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:32:33,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:32:33,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47667eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33, skipping insertion in model container [2023-02-14 02:32:33,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:32:33,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:32:33,299 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2023-02-14 02:32:33,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:32:33,309 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 02:32:33,320 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2023-02-14 02:32:33,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:32:33,330 INFO L208 MainTranslator]: Completed translation [2023-02-14 02:32:33,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33 WrapperNode [2023-02-14 02:32:33,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:32:33,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 02:32:33,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 02:32:33,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 02:32:33,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,349 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-14 02:32:33,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 02:32:33,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 02:32:33,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 02:32:33,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 02:32:33,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,363 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 02:32:33,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 02:32:33,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 02:32:33,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 02:32:33,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (1/1) ... [2023-02-14 02:32:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:32:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:33,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 02:32:33,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 02:32:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2023-02-14 02:32:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2023-02-14 02:32:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 02:32:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 02:32:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 02:32:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 02:32:33,480 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 02:32:33,481 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 02:32:33,572 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 02:32:33,576 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 02:32:33,577 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 02:32:33,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:32:33 BoogieIcfgContainer [2023-02-14 02:32:33,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 02:32:33,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 02:32:33,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 02:32:33,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 02:32:33,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:32:33" (1/3) ... [2023-02-14 02:32:33,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e8bef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:32:33, skipping insertion in model container [2023-02-14 02:32:33,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:32:33" (2/3) ... [2023-02-14 02:32:33,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e8bef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:32:33, skipping insertion in model container [2023-02-14 02:32:33,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:32:33" (3/3) ... [2023-02-14 02:32:33,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2023-02-14 02:32:33,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 02:32:33,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-14 02:32:33,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 02:32:33,634 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@221f7b4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 02:32:33,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-14 02:32:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 02:32:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 02:32:33,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:33,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:33,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash -108718961, now seen corresponding path program 1 times [2023-02-14 02:32:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:33,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272353952] [2023-02-14 02:32:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:32:33,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272353952] [2023-02-14 02:32:33,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272353952] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:32:33,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:32:33,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:32:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158687832] [2023-02-14 02:32:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:32:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:32:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:32:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:32:33,797 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:32:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:33,855 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-02-14 02:32:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:32:33,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-14 02:32:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:33,865 INFO L225 Difference]: With dead ends: 35 [2023-02-14 02:32:33,865 INFO L226 Difference]: Without dead ends: 24 [2023-02-14 02:32:33,869 INFO L412 NwaCegarLoop]: 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 [2023-02-14 02:32:33,875 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:33,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-14 02:32:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-02-14 02:32:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-02-14 02:32:33,911 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2023-02-14 02:32:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:33,913 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-02-14 02:32:33,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:32:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-02-14 02:32:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 02:32:33,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:33,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 02:32:33,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash 924679547, now seen corresponding path program 1 times [2023-02-14 02:32:33,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424304038] [2023-02-14 02:32:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:32:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:33,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424304038] [2023-02-14 02:32:33,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424304038] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:32:33,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:32:33,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:32:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194249663] [2023-02-14 02:32:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:32:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:32:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:32:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:32:33,989 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:32:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:34,029 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-02-14 02:32:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:32:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 02:32:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:34,030 INFO L225 Difference]: With dead ends: 22 [2023-02-14 02:32:34,030 INFO L226 Difference]: Without dead ends: 20 [2023-02-14 02:32:34,031 INFO L412 NwaCegarLoop]: 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 [2023-02-14 02:32:34,032 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:34,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-14 02:32:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-14 02:32:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-14 02:32:34,036 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2023-02-14 02:32:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:34,037 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-14 02:32:34,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:32:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-14 02:32:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 02:32:34,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:34,038 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 02:32:34,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1244761165, now seen corresponding path program 1 times [2023-02-14 02:32:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:34,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109539279] [2023-02-14 02:32:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 02:32:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-14 02:32:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-14 02:32:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109539279] [2023-02-14 02:32:34,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109539279] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:32:34,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:32:34,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:32:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346670885] [2023-02-14 02:32:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:32:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:32:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:32:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:32:34,189 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:34,219 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-02-14 02:32:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:32:34,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-02-14 02:32:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:34,221 INFO L225 Difference]: With dead ends: 36 [2023-02-14 02:32:34,221 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 02:32:34,221 INFO L412 NwaCegarLoop]: 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 [2023-02-14 02:32:34,222 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:34,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 02:32:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-14 02:32:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-14 02:32:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-14 02:32:34,229 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2023-02-14 02:32:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:34,229 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-14 02:32:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-14 02:32:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 02:32:34,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:34,231 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 02:32:34,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 78572347, now seen corresponding path program 1 times [2023-02-14 02:32:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020829980] [2023-02-14 02:32:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 02:32:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-14 02:32:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 02:32:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020829980] [2023-02-14 02:32:34,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020829980] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:34,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443742078] [2023-02-14 02:32:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:34,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:34,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:34,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 02:32:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:34,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:32:34,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:32:34,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:32:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443742078] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:34,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:34,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-02-14 02:32:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212916013] [2023-02-14 02:32:34,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 02:32:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 02:32:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-02-14 02:32:34,650 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:32:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:34,955 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2023-02-14 02:32:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 02:32:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2023-02-14 02:32:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:34,957 INFO L225 Difference]: With dead ends: 126 [2023-02-14 02:32:34,957 INFO L226 Difference]: Without dead ends: 93 [2023-02-14 02:32:34,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-02-14 02:32:34,959 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 112 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:34,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 135 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 02:32:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-14 02:32:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2023-02-14 02:32:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2023-02-14 02:32:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2023-02-14 02:32:34,972 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2023-02-14 02:32:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:34,972 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2023-02-14 02:32:34,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:32:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2023-02-14 02:32:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 02:32:34,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:34,974 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:34,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 02:32:35,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:35,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1267704266, now seen corresponding path program 2 times [2023-02-14 02:32:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:35,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410248562] [2023-02-14 02:32:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:35,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 02:32:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-14 02:32:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410248562] [2023-02-14 02:32:35,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410248562] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:35,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788603456] [2023-02-14 02:32:35,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:32:35,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:35,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:35,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 02:32:35,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:32:35,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:35,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:32:35,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-14 02:32:35,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:32:35,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788603456] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:32:35,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 02:32:35,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-02-14 02:32:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141392047] [2023-02-14 02:32:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:32:35,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:32:35,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:32:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-14 02:32:35,491 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:35,513 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2023-02-14 02:32:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:32:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-02-14 02:32:35,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:35,515 INFO L225 Difference]: With dead ends: 102 [2023-02-14 02:32:35,516 INFO L226 Difference]: Without dead ends: 101 [2023-02-14 02:32:35,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-14 02:32:35,518 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:35,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-14 02:32:35,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2023-02-14 02:32:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2023-02-14 02:32:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2023-02-14 02:32:35,532 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2023-02-14 02:32:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:35,533 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2023-02-14 02:32:35,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2023-02-14 02:32:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 02:32:35,534 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:35,534 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:35,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 02:32:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:35,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:35,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash -644126528, now seen corresponding path program 1 times [2023-02-14 02:32:35,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:35,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007710921] [2023-02-14 02:32:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 02:32:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-14 02:32:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:35,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007710921] [2023-02-14 02:32:35,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007710921] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:35,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64183416] [2023-02-14 02:32:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:35,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:35,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:35,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 02:32:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:35,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:32:35,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:32:35,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:32:36,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64183416] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:36,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:36,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-02-14 02:32:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557329103] [2023-02-14 02:32:36,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:36,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-14 02:32:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-14 02:32:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-02-14 02:32:36,056 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:32:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:36,695 INFO L93 Difference]: Finished difference Result 293 states and 459 transitions. [2023-02-14 02:32:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-14 02:32:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2023-02-14 02:32:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:36,700 INFO L225 Difference]: With dead ends: 293 [2023-02-14 02:32:36,700 INFO L226 Difference]: Without dead ends: 215 [2023-02-14 02:32:36,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-02-14 02:32:36,705 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 155 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:36,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 297 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 02:32:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-02-14 02:32:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 175. [2023-02-14 02:32:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2023-02-14 02:32:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2023-02-14 02:32:36,741 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2023-02-14 02:32:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:36,741 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2023-02-14 02:32:36,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:32:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2023-02-14 02:32:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 02:32:36,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:36,743 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:36,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:36,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:36,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash 749848469, now seen corresponding path program 1 times [2023-02-14 02:32:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285957861] [2023-02-14 02:32:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:36,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-14 02:32:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-02-14 02:32:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-02-14 02:32:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:37,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285957861] [2023-02-14 02:32:37,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285957861] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:32:37,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:32:37,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:32:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351460261] [2023-02-14 02:32:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:32:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:32:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:32:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:32:37,011 INFO L87 Difference]: Start difference. First operand 175 states and 255 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:37,047 INFO L93 Difference]: Finished difference Result 191 states and 277 transitions. [2023-02-14 02:32:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:32:37,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2023-02-14 02:32:37,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:37,049 INFO L225 Difference]: With dead ends: 191 [2023-02-14 02:32:37,050 INFO L226 Difference]: Without dead ends: 190 [2023-02-14 02:32:37,050 INFO L412 NwaCegarLoop]: 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 [2023-02-14 02:32:37,050 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:37,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 99 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-02-14 02:32:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2023-02-14 02:32:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2023-02-14 02:32:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2023-02-14 02:32:37,065 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 50 [2023-02-14 02:32:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:37,066 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2023-02-14 02:32:37,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 02:32:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2023-02-14 02:32:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-14 02:32:37,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:37,068 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:37,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 02:32:37,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash -666929869, now seen corresponding path program 1 times [2023-02-14 02:32:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:37,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550967043] [2023-02-14 02:32:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 02:32:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-02-14 02:32:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-02-14 02:32:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:37,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550967043] [2023-02-14 02:32:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550967043] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:37,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340287549] [2023-02-14 02:32:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:37,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:37,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:37,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 02:32:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:37,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 02:32:37,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 78 proven. 102 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-14 02:32:37,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 2 proven. 181 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 02:32:37,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340287549] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:37,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:37,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 26 [2023-02-14 02:32:37,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453911623] [2023-02-14 02:32:37,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:37,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 02:32:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 02:32:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-02-14 02:32:37,720 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-02-14 02:32:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:38,131 INFO L93 Difference]: Finished difference Result 532 states and 857 transitions. [2023-02-14 02:32:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 02:32:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 73 [2023-02-14 02:32:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:38,135 INFO L225 Difference]: With dead ends: 532 [2023-02-14 02:32:38,137 INFO L226 Difference]: Without dead ends: 365 [2023-02-14 02:32:38,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 02:32:38,140 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 309 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:38,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 502 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 02:32:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-14 02:32:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 332. [2023-02-14 02:32:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 262 states have (on average 1.0954198473282444) internal successors, (287), 260 states have internal predecessors, (287), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2023-02-14 02:32:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 459 transitions. [2023-02-14 02:32:38,179 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 459 transitions. Word has length 73 [2023-02-14 02:32:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:38,179 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 459 transitions. [2023-02-14 02:32:38,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-02-14 02:32:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 459 transitions. [2023-02-14 02:32:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-14 02:32:38,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:38,181 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:38,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:38,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:38,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash -147621069, now seen corresponding path program 2 times [2023-02-14 02:32:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174368027] [2023-02-14 02:32:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-14 02:32:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-02-14 02:32:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 02:32:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-02-14 02:32:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174368027] [2023-02-14 02:32:38,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174368027] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82781273] [2023-02-14 02:32:38,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:32:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:38,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:38,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 02:32:38,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:32:38,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:38,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:32:38,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-02-14 02:32:38,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-02-14 02:32:38,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82781273] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:38,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:38,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-02-14 02:32:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709043762] [2023-02-14 02:32:38,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:38,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 02:32:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:38,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 02:32:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-02-14 02:32:38,589 INFO L87 Difference]: Start difference. First operand 332 states and 459 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-14 02:32:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:38,637 INFO L93 Difference]: Finished difference Result 355 states and 484 transitions. [2023-02-14 02:32:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:32:38,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2023-02-14 02:32:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:38,640 INFO L225 Difference]: With dead ends: 355 [2023-02-14 02:32:38,640 INFO L226 Difference]: Without dead ends: 354 [2023-02-14 02:32:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-14 02:32:38,643 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:38,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 135 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-02-14 02:32:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 332. [2023-02-14 02:32:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 262 states have (on average 1.0954198473282444) internal successors, (287), 260 states have internal predecessors, (287), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2023-02-14 02:32:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 459 transitions. [2023-02-14 02:32:38,663 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 459 transitions. Word has length 86 [2023-02-14 02:32:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:38,663 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 459 transitions. [2023-02-14 02:32:38,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-14 02:32:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 459 transitions. [2023-02-14 02:32:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-14 02:32:38,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:38,665 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:38,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-14 02:32:38,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:38,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash -281285789, now seen corresponding path program 1 times [2023-02-14 02:32:38,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:38,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740744655] [2023-02-14 02:32:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:38,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-14 02:32:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-02-14 02:32:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 02:32:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 183 proven. 116 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 02:32:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:39,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740744655] [2023-02-14 02:32:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740744655] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945567258] [2023-02-14 02:32:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:39,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:39,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:39,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:39,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 02:32:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:39,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-14 02:32:39,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 02:32:39,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-14 02:32:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945567258] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:39,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:39,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 26 [2023-02-14 02:32:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221584190] [2023-02-14 02:32:39,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:39,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 02:32:39,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 02:32:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-02-14 02:32:39,479 INFO L87 Difference]: Start difference. First operand 332 states and 459 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-14 02:32:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:40,030 INFO L93 Difference]: Finished difference Result 521 states and 726 transitions. [2023-02-14 02:32:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-14 02:32:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 87 [2023-02-14 02:32:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:40,031 INFO L225 Difference]: With dead ends: 521 [2023-02-14 02:32:40,031 INFO L226 Difference]: Without dead ends: 198 [2023-02-14 02:32:40,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 169 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=825, Invalid=2367, Unknown=0, NotChecked=0, Total=3192 [2023-02-14 02:32:40,035 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 522 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:40,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 156 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 02:32:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-14 02:32:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2023-02-14 02:32:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 142 states have internal predecessors, (161), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 02:32:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2023-02-14 02:32:40,045 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 87 [2023-02-14 02:32:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2023-02-14 02:32:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-14 02:32:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2023-02-14 02:32:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-14 02:32:40,047 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:40,047 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-14 02:32:40,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:40,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:40,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2122545154, now seen corresponding path program 2 times [2023-02-14 02:32:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:40,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673412424] [2023-02-14 02:32:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:40,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-14 02:32:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-02-14 02:32:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-02-14 02:32:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673412424] [2023-02-14 02:32:40,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673412424] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:40,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893022321] [2023-02-14 02:32:40,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:32:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:40,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:40,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 02:32:40,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:32:40,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:40,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:32:40,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-02-14 02:32:40,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-02-14 02:32:40,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893022321] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:40,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:40,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-02-14 02:32:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580986524] [2023-02-14 02:32:40,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 02:32:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 02:32:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-02-14 02:32:40,585 INFO L87 Difference]: Start difference. First operand 179 states and 206 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-14 02:32:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:40,631 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions. [2023-02-14 02:32:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 02:32:40,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-02-14 02:32:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:40,633 INFO L225 Difference]: With dead ends: 181 [2023-02-14 02:32:40,633 INFO L226 Difference]: Without dead ends: 180 [2023-02-14 02:32:40,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-02-14 02:32:40,633 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:40,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 104 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-14 02:32:40,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2023-02-14 02:32:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.119718309859155) internal successors, (159), 142 states have internal predecessors, (159), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 02:32:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2023-02-14 02:32:40,640 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 81 [2023-02-14 02:32:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:40,640 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2023-02-14 02:32:40,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-14 02:32:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2023-02-14 02:32:40,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-14 02:32:40,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:40,641 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2023-02-14 02:32:40,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:40,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash -840473453, now seen corresponding path program 3 times [2023-02-14 02:32:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420191293] [2023-02-14 02:32:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 02:32:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-02-14 02:32:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-02-14 02:32:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:41,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420191293] [2023-02-14 02:32:41,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420191293] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895117133] [2023-02-14 02:32:41,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:32:41,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:41,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:41,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 02:32:41,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-14 02:32:41,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:32:41,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-02-14 02:32:41,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-02-14 02:32:41,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895117133] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:41,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:41,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-02-14 02:32:41,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857169287] [2023-02-14 02:32:41,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 02:32:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 02:32:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-02-14 02:32:41,489 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-14 02:32:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:41,563 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2023-02-14 02:32:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 02:32:41,564 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 113 [2023-02-14 02:32:41,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:41,565 INFO L225 Difference]: With dead ends: 179 [2023-02-14 02:32:41,565 INFO L226 Difference]: Without dead ends: 178 [2023-02-14 02:32:41,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-02-14 02:32:41,566 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:41,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 150 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:32:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-14 02:32:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-02-14 02:32:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 142 states have (on average 1.056338028169014) internal successors, (150), 141 states have internal predecessors, (150), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 02:32:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 195 transitions. [2023-02-14 02:32:41,574 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 195 transitions. Word has length 113 [2023-02-14 02:32:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:41,575 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 195 transitions. [2023-02-14 02:32:41,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-14 02:32:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 195 transitions. [2023-02-14 02:32:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-02-14 02:32:41,577 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:41,577 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2023-02-14 02:32:41,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-14 02:32:41,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 02:32:41,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1242579183, now seen corresponding path program 3 times [2023-02-14 02:32:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683200076] [2023-02-14 02:32:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-14 02:32:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:32:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-02-14 02:32:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2023-02-14 02:32:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683200076] [2023-02-14 02:32:42,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683200076] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:42,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106452072] [2023-02-14 02:32:42,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:32:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:42,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:42,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 02:32:42,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 02:32:42,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:42,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-14 02:32:42,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2023-02-14 02:32:42,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-02-14 02:32:43,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106452072] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:43,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:43,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2023-02-14 02:32:43,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620658426] [2023-02-14 02:32:43,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-14 02:32:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-14 02:32:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-02-14 02:32:43,439 INFO L87 Difference]: Start difference. First operand 178 states and 195 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2023-02-14 02:32:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:43,532 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2023-02-14 02:32:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 02:32:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 167 [2023-02-14 02:32:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:43,534 INFO L225 Difference]: With dead ends: 179 [2023-02-14 02:32:43,534 INFO L226 Difference]: Without dead ends: 178 [2023-02-14 02:32:43,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 348 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2023-02-14 02:32:43,535 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:43,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 131 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:32:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-14 02:32:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-02-14 02:32:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 142 states have (on average 1.028169014084507) internal successors, (146), 141 states have internal predecessors, (146), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 02:32:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2023-02-14 02:32:43,541 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 167 [2023-02-14 02:32:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:43,542 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2023-02-14 02:32:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2023-02-14 02:32:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2023-02-14 02:32:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-02-14 02:32:43,545 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:43,545 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2023-02-14 02:32:43,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-14 02:32:43,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1895354522, now seen corresponding path program 4 times [2023-02-14 02:32:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628100331] [2023-02-14 02:32:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-14 02:32:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:32:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:32:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-14 02:32:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:32:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-02-14 02:32:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:32:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:32:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:32:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:32:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2023-02-14 02:32:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:32:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628100331] [2023-02-14 02:32:46,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628100331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:32:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942329612] [2023-02-14 02:32:46,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 02:32:46,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:32:46,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:32:46,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:32:46,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 02:32:46,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 02:32:46,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:32:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 81 conjunts are in the unsatisfiable core [2023-02-14 02:32:46,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:32:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2023-02-14 02:32:46,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:32:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2023-02-14 02:32:51,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942329612] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:32:51,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:32:51,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2023-02-14 02:32:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007288349] [2023-02-14 02:32:51,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:32:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-14 02:32:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:32:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-14 02:32:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2023-02-14 02:32:51,791 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2023-02-14 02:32:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:32:51,880 INFO L93 Difference]: Finished difference Result 179 states and 191 transitions. [2023-02-14 02:32:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 02:32:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 410 [2023-02-14 02:32:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:32:51,882 INFO L225 Difference]: With dead ends: 179 [2023-02-14 02:32:51,882 INFO L226 Difference]: Without dead ends: 178 [2023-02-14 02:32:51,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 878 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2023-02-14 02:32:51,883 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:32:51,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 149 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:32:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-14 02:32:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-02-14 02:32:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 141 states have internal predecessors, (143), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-14 02:32:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2023-02-14 02:32:51,887 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 410 [2023-02-14 02:32:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:32:51,888 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2023-02-14 02:32:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2023-02-14 02:32:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2023-02-14 02:32:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2023-02-14 02:32:51,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:32:51,904 INFO L195 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2023-02-14 02:32:51,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 02:32:52,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-14 02:32:52,110 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:32:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:32:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -847997552, now seen corresponding path program 5 times [2023-02-14 02:32:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:32:52,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97546841] [2023-02-14 02:32:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:32:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:32:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 02:32:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:32:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:32:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:33:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-14 02:33:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-02-14 02:33:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:33:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2023-02-14 02:33:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:33:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-14 02:33:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2023-02-14 02:33:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:33:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-14 02:33:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-02-14 02:33:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-14 02:33:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-02-14 02:33:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 02:33:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-14 02:33:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2023-02-14 02:33:02,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97546841] [2023-02-14 02:33:02,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97546841] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:02,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980134024] [2023-02-14 02:33:02,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 02:33:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:02,593 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 02:33:02,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 02:33:03,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2023-02-14 02:33:03,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:33:03,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 217 conjunts are in the unsatisfiable core [2023-02-14 02:33:03,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2023-02-14 02:33:04,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26211 trivial. 0 not checked. [2023-02-14 02:33:32,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980134024] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:32,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:32,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2023-02-14 02:33:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326041189] [2023-02-14 02:33:32,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:32,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-02-14 02:33:32,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:32,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-02-14 02:33:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2023-02-14 02:33:32,474 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand has 55 states, 54 states have (on average 2.574074074074074) internal successors, (139), 55 states have internal predecessors, (139), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2023-02-14 02:33:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:32,545 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2023-02-14 02:33:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-14 02:33:32,546 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.574074074074074) internal successors, (139), 55 states have internal predecessors, (139), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) Word has length 1065 [2023-02-14 02:33:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:32,547 INFO L225 Difference]: With dead ends: 178 [2023-02-14 02:33:32,547 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 02:33:32,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2561 GetRequests, 2316 SyntacticMatches, 192 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7369 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2023-02-14 02:33:32,549 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:32,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 02:33:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 02:33:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 02:33:32,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1065 [2023-02-14 02:33:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:32,550 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 02:33:32,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.574074074074074) internal successors, (139), 55 states have internal predecessors, (139), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2023-02-14 02:33:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 02:33:32,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 02:33:32,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-02-14 02:33:32,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-02-14 02:33:32,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-02-14 02:33:32,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-02-14 02:33:32,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-02-14 02:33:32,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-02-14 02:33:32,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-14 02:33:32,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-14 02:33:32,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 24) the Hoare annotation is: true [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,205 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L895 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|))) [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-4(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-5(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L895 garLoopResultBuilder]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse0 (<= 2 |fibonacci_#t~ret4|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (and (or (not (<= 7 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 7)) (and .cse0 (<= |fibonacci_#t~ret4| 8) .cse1)) (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 5)) (not (<= 5 |fibonacci_#in~n|)) (and .cse0 (<= |fibonacci_#t~ret4| 3) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 21) .cse1) (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|))) (or (not (<= |fibonacci_#in~n| 8)) (and .cse0 (<= |fibonacci_#t~ret4| 13) .cse1) (not (<= 8 |fibonacci_#in~n|))) (or (not (<= |fibonacci_#in~n| 3)) (and (<= 1 |fibonacci_#t~ret4|) (<= |fibonacci_#t~ret4| 1) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 5) .cse1) (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|))) (or (and .cse0 (<= |fibonacci_#t~ret4| 2) .cse1) (not (<= 4 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4))))) [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-7(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-8(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L22-9(line 22) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 02:33:33,206 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2023-02-14 02:33:33,207 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) [2023-02-14 02:33:33,207 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 02:33:33,207 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-02-14 02:33:33,207 INFO L902 garLoopResultBuilder]: At program point L27(lines 27 35) the Hoare annotation is: true [2023-02-14 02:33:33,207 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 02:33:33,209 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1] [2023-02-14 02:33:33,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 02:33:33,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 02:33:33 BoogieIcfgContainer [2023-02-14 02:33:33,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 02:33:33,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 02:33:33,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 02:33:33,220 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 02:33:33,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:32:33" (3/4) ... [2023-02-14 02:33:33,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 02:33:33,227 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2023-02-14 02:33:33,229 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-14 02:33:33,229 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 02:33:33,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 02:33:33,230 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 02:33:33,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 02:33:33,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 02:33:33,251 INFO L158 Benchmark]: Toolchain (without parser) took 60094.57ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 149.1MB in the beginning and 701.8MB in the end (delta: -552.7MB). Peak memory consumption was 757.0MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,251 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:33:33,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.72ms. Allocated memory is still 184.5MB. Free memory was 149.1MB in the beginning and 139.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.99ms. Allocated memory is still 184.5MB. Free memory was 139.0MB in the beginning and 137.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:33:33,252 INFO L158 Benchmark]: Boogie Preprocessor took 18.15ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 136.9MB in the end (delta: 736.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,252 INFO L158 Benchmark]: RCFGBuilder took 209.34ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 126.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,252 INFO L158 Benchmark]: TraceAbstraction took 59639.03ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 125.7MB in the beginning and 704.9MB in the end (delta: -579.2MB). Peak memory consumption was 731.9MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,253 INFO L158 Benchmark]: Witness Printer took 31.36ms. Allocated memory is still 1.5GB. Free memory was 704.9MB in the beginning and 701.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 02:33:33,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.72ms. Allocated memory is still 184.5MB. Free memory was 149.1MB in the beginning and 139.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.99ms. Allocated memory is still 184.5MB. Free memory was 139.0MB in the beginning and 137.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.15ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 136.9MB in the end (delta: 736.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.34ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 126.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 59639.03ms. Allocated memory was 184.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 125.7MB in the beginning and 704.9MB in the end (delta: -579.2MB). Peak memory consumption was 731.9MB. Max. memory is 16.1GB. * Witness Printer took 31.36ms. Allocated memory is still 1.5GB. Free memory was 704.9MB in the beginning and 701.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 59.6s, OverallIterations: 15, TraceHistogramMax: 109, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1215 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1190 mSDsluCounter, 2254 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1854 mSDsCounter, 406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3035 IncrementalHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 406 mSolverCounterUnsat, 400 mSDtfsCounter, 3035 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5189 GetRequests, 4568 SyntacticMatches, 306 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11654 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=8, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 156 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 287 PreInvPairs, 311 NumberOfFragments, 164 HoareAnnotationTreeSize, 287 FomulaSimplifications, 881 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1390 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 52.3s InterpolantComputationTime, 4422 NumberOfCodeBlocks, 4329 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 6523 ConstructedInterpolants, 0 QuantifiedInterpolants, 15313 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4077 ConjunctsInSsa, 402 ConjunctsInUnsatCore, 36 InterpolantComputations, 5 PerfectInterpolantSequences, 122538/150053 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-14 02:33:33,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE