./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 791161d1 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-?-791161d [2022-07-23 13:29:31,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:29:31,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:29:31,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:29:31,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:29:31,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:29:31,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:29:31,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:29:31,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:29:31,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:29:31,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:29:31,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:29:31,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:29:31,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:29:31,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:29:31,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:29:31,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:29:31,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:29:31,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:29:31,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:29:31,285 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:29:31,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:29:31,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:29:31,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:29:31,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:29:31,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:29:31,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:29:31,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:29:31,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:29:31,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:29:31,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:29:31,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:29:31,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:29:31,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:29:31,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:29:31,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:29:31,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:29:31,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:29:31,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:29:31,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:29:31,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:29:31,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:29:31,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:29:31,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:29:31,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:29:31,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:29:31,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:29:31,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:29:31,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:29:31,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:29:31,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:29:31,336 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:29:31,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:29:31,337 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:29:31,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:29:31,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:29:31,338 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:29:31,339 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:29:31,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:29:31,339 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:29:31,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:29:31,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:29:31,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:29:31,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:29:31,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:29:31,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:29:31,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:29:31,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:29:31,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:29:31,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:29:31,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:29:31,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2022-07-23 13:29:31,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:29:31,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:29:31,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:29:31,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:29:31,578 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:29:31,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2022-07-23 13:29:31,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f549b1ff/d5928bdbee5e4c5886e9a4736025636a/FLAG0254672aa [2022-07-23 13:29:32,001 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:29:32,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2022-07-23 13:29:32,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f549b1ff/d5928bdbee5e4c5886e9a4736025636a/FLAG0254672aa [2022-07-23 13:29:32,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f549b1ff/d5928bdbee5e4c5886e9a4736025636a [2022-07-23 13:29:32,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:29:32,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:29:32,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:29:32,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:29:32,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:29:32,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6e6b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32, skipping insertion in model container [2022-07-23 13:29:32,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:29:32,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:29:32,593 WARN L230 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] [2022-07-23 13:29:32,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:29:32,603 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:29:32,619 WARN L230 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] [2022-07-23 13:29:32,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:29:32,630 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:29:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32 WrapperNode [2022-07-23 13:29:32,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:29:32,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:29:32,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:29:32,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:29:32,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,662 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-23 13:29:32,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:29:32,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:29:32,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:29:32,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:29:32,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:29:32,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:29:32,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:29:32,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:29:32,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (1/1) ... [2022-07-23 13:29:32,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:29:32,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:32,703 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) [2022-07-23 13:29:32,713 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 [2022-07-23 13:29:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-07-23 13:29:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-07-23 13:29:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:29:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:29:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:29:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:29:32,797 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:29:32,798 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:29:32,877 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:29:32,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:29:32,883 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 13:29:32,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:29:32 BoogieIcfgContainer [2022-07-23 13:29:32,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:29:32,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:29:32,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:29:32,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:29:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:29:32" (1/3) ... [2022-07-23 13:29:32,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfa965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:29:32, skipping insertion in model container [2022-07-23 13:29:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:29:32" (2/3) ... [2022-07-23 13:29:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfa965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:29:32, skipping insertion in model container [2022-07-23 13:29:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:29:32" (3/3) ... [2022-07-23 13:29:32,891 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2022-07-23 13:29:32,903 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:29:32,903 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-23 13:29:32,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:29:32,947 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ff2225, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@207905e3 [2022-07-23 13:29:32,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-23 13:29:32,951 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) [2022-07-23 13:29:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:29:32,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:32,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:32,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash -108718961, now seen corresponding path program 1 times [2022-07-23 13:29:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025655562] [2022-07-23 13:29:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025655562] [2022-07-23 13:29:33,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025655562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:33,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:29:33,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:29:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128602847] [2022-07-23 13:29:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:29:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:29:33,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:29:33,151 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 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-07-23 13:29:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:33,264 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-07-23 13:29:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:29:33,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2022-07-23 13:29:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:33,279 INFO L225 Difference]: With dead ends: 33 [2022-07-23 13:29:33,279 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 13:29:33,281 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 [2022-07-23 13:29:33,293 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:29:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 13:29:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-23 13:29:33,320 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) [2022-07-23 13:29:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-23 13:29:33,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-07-23 13:29:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-23 13:29:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-07-23 13:29:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-23 13:29:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:29:33,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:33,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:29:33,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 924679547, now seen corresponding path program 1 times [2022-07-23 13:29:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:33,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432619437] [2022-07-23 13:29:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432619437] [2022-07-23 13:29:33,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432619437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:33,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:29:33,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:29:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087359918] [2022-07-23 13:29:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:33,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:29:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:33,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:29:33,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:29:33,354 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-07-23 13:29:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:33,374 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-07-23 13:29:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:29:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-07-23 13:29:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:33,377 INFO L225 Difference]: With dead ends: 24 [2022-07-23 13:29:33,377 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 13:29:33,378 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 [2022-07-23 13:29:33,379 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:33,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 13:29:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-07-23 13:29:33,385 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) [2022-07-23 13:29:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-23 13:29:33,387 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-07-23 13:29:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:33,387 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-23 13:29:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-07-23 13:29:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-23 13:29:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 13:29:33,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:33,389 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:33,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:29:33,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1244761165, now seen corresponding path program 1 times [2022-07-23 13:29:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:33,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491998105] [2022-07-23 13:29:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:29:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-23 13:29:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-23 13:29:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491998105] [2022-07-23 13:29:33,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491998105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:33,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:29:33,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:29:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129266045] [2022-07-23 13:29:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:29:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:29:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:29:33,493 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) [2022-07-23 13:29:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:33,552 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-07-23 13:29:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:29:33,554 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 [2022-07-23 13:29:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:33,555 INFO L225 Difference]: With dead ends: 36 [2022-07-23 13:29:33,555 INFO L226 Difference]: Without dead ends: 34 [2022-07-23 13:29:33,555 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 [2022-07-23 13:29:33,556 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 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 [2022-07-23 13:29:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-23 13:29:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-07-23 13:29:33,569 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) [2022-07-23 13:29:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-07-23 13:29:33,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-07-23 13:29:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:33,571 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-07-23 13:29:33,571 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) [2022-07-23 13:29:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-07-23 13:29:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-23 13:29:33,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:33,573 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] [2022-07-23 13:29:33,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:29:33,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash 78572347, now seen corresponding path program 1 times [2022-07-23 13:29:33,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:33,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270290470] [2022-07-23 13:29:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:29:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-23 13:29:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 13:29:33,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:33,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270290470] [2022-07-23 13:29:33,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270290470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850403824] [2022-07-23 13:29:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:33,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:33,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:33,678 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) [2022-07-23 13:29:33,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:29:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:29:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:33,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:29:33,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850403824] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:33,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:33,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-07-23 13:29:33,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958243091] [2022-07-23 13:29:33,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:33,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 13:29:33,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 13:29:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:29:33,984 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) [2022-07-23 13:29:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:34,298 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2022-07-23 13:29:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 13:29:34,299 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 [2022-07-23 13:29:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:34,301 INFO L225 Difference]: With dead ends: 126 [2022-07-23 13:29:34,301 INFO L226 Difference]: Without dead ends: 93 [2022-07-23 13:29:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-23 13:29:34,303 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 120 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:34,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 135 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:29:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-23 13:29:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-07-23 13:29:34,324 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) [2022-07-23 13:29:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2022-07-23 13:29:34,329 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2022-07-23 13:29:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:34,330 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2022-07-23 13:29:34,331 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) [2022-07-23 13:29:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2022-07-23 13:29:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 13:29:34,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:34,333 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] [2022-07-23 13:29:34,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:34,556 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 [2022-07-23 13:29:34,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1267704266, now seen corresponding path program 2 times [2022-07-23 13:29:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:34,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071917521] [2022-07-23 13:29:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-23 13:29:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 13:29:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071917521] [2022-07-23 13:29:34,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071917521] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380835334] [2022-07-23 13:29:34,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:29:34,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:34,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:34,649 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) [2022-07-23 13:29:34,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:29:34,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:29:34,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:34,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:29:34,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 13:29:34,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:29:34,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380835334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:34,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:29:34,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-23 13:29:34,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764356328] [2022-07-23 13:29:34,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:34,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:29:34,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:34,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:29:34,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:29:34,736 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) [2022-07-23 13:29:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:34,765 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2022-07-23 13:29:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:29:34,765 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 [2022-07-23 13:29:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:34,767 INFO L225 Difference]: With dead ends: 95 [2022-07-23 13:29:34,767 INFO L226 Difference]: Without dead ends: 94 [2022-07-23 13:29:34,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:29:34,769 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:34,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-23 13:29:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-07-23 13:29:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 15 states have call predecessors, (32), 10 states have call successors, (32) [2022-07-23 13:29:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 116 transitions. [2022-07-23 13:29:34,785 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 116 transitions. Word has length 30 [2022-07-23 13:29:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:34,785 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 116 transitions. [2022-07-23 13:29:34,785 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) [2022-07-23 13:29:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 116 transitions. [2022-07-23 13:29:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 13:29:34,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:34,786 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] [2022-07-23 13:29:34,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:35,009 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 [2022-07-23 13:29:35,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -644126528, now seen corresponding path program 1 times [2022-07-23 13:29:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:35,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583476147] [2022-07-23 13:29:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-23 13:29:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 13:29:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583476147] [2022-07-23 13:29:35,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583476147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732650380] [2022-07-23 13:29:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:35,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:35,091 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) [2022-07-23 13:29:35,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:29:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:35,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 13:29:35,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:35,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:29:35,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732650380] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:35,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:35,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-07-23 13:29:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302910578] [2022-07-23 13:29:35,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:35,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 13:29:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 13:29:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:29:35,367 INFO L87 Difference]: Start difference. First operand 85 states and 116 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) [2022-07-23 13:29:36,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:36,008 INFO L93 Difference]: Finished difference Result 287 states and 442 transitions. [2022-07-23 13:29:36,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-23 13:29:36,008 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 [2022-07-23 13:29:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:36,011 INFO L225 Difference]: With dead ends: 287 [2022-07-23 13:29:36,012 INFO L226 Difference]: Without dead ends: 211 [2022-07-23 13:29:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:29:36,015 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:36,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 326 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:29:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-23 13:29:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 175. [2022-07-23 13:29:36,047 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) [2022-07-23 13:29:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2022-07-23 13:29:36,050 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2022-07-23 13:29:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:36,051 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2022-07-23 13:29:36,051 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) [2022-07-23 13:29:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2022-07-23 13:29:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 13:29:36,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:36,053 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:36,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-23 13:29:36,267 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 [2022-07-23 13:29:36,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1089076188, now seen corresponding path program 1 times [2022-07-23 13:29:36,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:36,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238236344] [2022-07-23 13:29:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 13:29:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-23 13:29:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-23 13:29:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:36,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238236344] [2022-07-23 13:29:36,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238236344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:36,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:29:36,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:29:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872896530] [2022-07-23 13:29:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:36,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:29:36,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:29:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:29:36,366 INFO L87 Difference]: Start difference. First operand 175 states and 255 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) [2022-07-23 13:29:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:36,402 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2022-07-23 13:29:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:29:36,404 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 55 [2022-07-23 13:29:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:36,409 INFO L225 Difference]: With dead ends: 192 [2022-07-23 13:29:36,409 INFO L226 Difference]: Without dead ends: 190 [2022-07-23 13:29:36,410 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 [2022-07-23 13:29:36,411 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:36,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-23 13:29:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-07-23 13:29:36,455 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) [2022-07-23 13:29:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2022-07-23 13:29:36,462 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 55 [2022-07-23 13:29:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:36,463 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2022-07-23 13:29:36,463 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) [2022-07-23 13:29:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2022-07-23 13:29:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-23 13:29:36,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:36,471 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 13:29:36,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:36,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1167140976, now seen corresponding path program 1 times [2022-07-23 13:29:36,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:36,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067454699] [2022-07-23 13:29:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:36,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 13:29:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-23 13:29:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-23 13:29:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-23 13:29:36,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:36,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067454699] [2022-07-23 13:29:36,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067454699] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:36,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213519172] [2022-07-23 13:29:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:36,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:36,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:36,555 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) [2022-07-23 13:29:36,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:29:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:36,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 13:29:36,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 116 proven. 75 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-23 13:29:36,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 35 proven. 175 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 13:29:36,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213519172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:36,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:36,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 24 [2022-07-23 13:29:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004018470] [2022-07-23 13:29:36,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-23 13:29:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-23 13:29:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:29:36,972 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:29:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:37,479 INFO L93 Difference]: Finished difference Result 497 states and 797 transitions. [2022-07-23 13:29:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 13:29:37,480 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 82 [2022-07-23 13:29:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:37,482 INFO L225 Difference]: With dead ends: 497 [2022-07-23 13:29:37,482 INFO L226 Difference]: Without dead ends: 330 [2022-07-23 13:29:37,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-07-23 13:29:37,485 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 243 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:37,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 443 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:29:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-23 13:29:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2022-07-23 13:29:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 238 states have (on average 1.096638655462185) internal successors, (261), 237 states have internal predecessors, (261), 38 states have call successors, (38), 11 states have call predecessors, (38), 24 states have return successors, (115), 53 states have call predecessors, (115), 37 states have call successors, (115) [2022-07-23 13:29:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 414 transitions. [2022-07-23 13:29:37,509 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 414 transitions. Word has length 82 [2022-07-23 13:29:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:37,509 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 414 transitions. [2022-07-23 13:29:37,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:29:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 414 transitions. [2022-07-23 13:29:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-23 13:29:37,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:37,512 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:37,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:37,741 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 [2022-07-23 13:29:37,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:37,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1192070742, now seen corresponding path program 1 times [2022-07-23 13:29:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:37,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692813597] [2022-07-23 13:29:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 13:29:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-23 13:29:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-23 13:29:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692813597] [2022-07-23 13:29:37,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692813597] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62132919] [2022-07-23 13:29:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:37,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:37,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:37,836 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) [2022-07-23 13:29:37,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:29:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:37,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 13:29:37,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 226 proven. 134 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-23 13:29:38,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 226 proven. 134 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-23 13:29:38,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62132919] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:38,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:38,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 30 [2022-07-23 13:29:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194022160] [2022-07-23 13:29:38,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-23 13:29:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-23 13:29:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2022-07-23 13:29:38,385 INFO L87 Difference]: Start difference. First operand 302 states and 414 transitions. Second operand has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:29:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:39,171 INFO L93 Difference]: Finished difference Result 588 states and 850 transitions. [2022-07-23 13:29:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-23 13:29:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 93 [2022-07-23 13:29:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:39,177 INFO L225 Difference]: With dead ends: 588 [2022-07-23 13:29:39,178 INFO L226 Difference]: Without dead ends: 303 [2022-07-23 13:29:39,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=850, Invalid=2120, Unknown=0, NotChecked=0, Total=2970 [2022-07-23 13:29:39,181 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 565 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:39,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 169 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:29:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-23 13:29:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 284. [2022-07-23 13:29:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 223 states have (on average 1.094170403587444) internal successors, (244), 225 states have internal predecessors, (244), 36 states have call successors, (36), 12 states have call predecessors, (36), 23 states have return successors, (68), 46 states have call predecessors, (68), 35 states have call successors, (68) [2022-07-23 13:29:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 348 transitions. [2022-07-23 13:29:39,198 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 348 transitions. Word has length 93 [2022-07-23 13:29:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:39,198 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 348 transitions. [2022-07-23 13:29:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:29:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 348 transitions. [2022-07-23 13:29:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-23 13:29:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:39,199 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:39,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:39,420 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 [2022-07-23 13:29:39,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash 842988476, now seen corresponding path program 2 times [2022-07-23 13:29:39,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:39,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223368552] [2022-07-23 13:29:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 13:29:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-23 13:29:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-23 13:29:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-23 13:29:39,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:39,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223368552] [2022-07-23 13:29:39,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223368552] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:39,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318496412] [2022-07-23 13:29:39,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:29:39,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:39,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:39,488 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) [2022-07-23 13:29:39,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:29:39,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:29:39,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:39,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 13:29:39,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 42 proven. 202 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 13:29:39,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 8 proven. 231 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 13:29:39,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318496412] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:39,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:39,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 21] total 25 [2022-07-23 13:29:39,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904580735] [2022-07-23 13:29:39,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:39,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-23 13:29:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-23 13:29:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-07-23 13:29:39,949 INFO L87 Difference]: Start difference. First operand 284 states and 348 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 13:29:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:40,331 INFO L93 Difference]: Finished difference Result 453 states and 569 transitions. [2022-07-23 13:29:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 13:29:40,332 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2022-07-23 13:29:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:40,333 INFO L225 Difference]: With dead ends: 453 [2022-07-23 13:29:40,333 INFO L226 Difference]: Without dead ends: 187 [2022-07-23 13:29:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 13:29:40,335 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 262 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:40,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 425 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:29:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-23 13:29:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 175. [2022-07-23 13:29:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.144927536231884) internal successors, (158), 140 states have internal predecessors, (158), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2022-07-23 13:29:40,347 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 79 [2022-07-23 13:29:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:40,348 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2022-07-23 13:29:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-23 13:29:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2022-07-23 13:29:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-23 13:29:40,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:40,349 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:29:40,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-23 13:29:40,568 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 [2022-07-23 13:29:40,569 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash 208625464, now seen corresponding path program 3 times [2022-07-23 13:29:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:40,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894670946] [2022-07-23 13:29:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 13:29:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 13:29:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-23 13:29:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894670946] [2022-07-23 13:29:40,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894670946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313156754] [2022-07-23 13:29:40,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:29:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:40,677 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) [2022-07-23 13:29:40,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:29:40,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-23 13:29:40,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:40,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:29:40,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-23 13:29:40,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-23 13:29:40,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313156754] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:40,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:40,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-07-23 13:29:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833799516] [2022-07-23 13:29:40,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:40,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:29:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:29:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:29:40,885 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-07-23 13:29:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:40,951 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2022-07-23 13:29:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 13:29:40,951 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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 80 [2022-07-23 13:29:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:40,954 INFO L225 Difference]: With dead ends: 178 [2022-07-23 13:29:40,954 INFO L226 Difference]: Without dead ends: 177 [2022-07-23 13:29:40,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:29:40,955 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:40,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:40,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-23 13:29:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-07-23 13:29:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 140 states have internal predecessors, (156), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2022-07-23 13:29:40,966 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 80 [2022-07-23 13:29:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:40,967 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2022-07-23 13:29:40,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-07-23 13:29:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2022-07-23 13:29:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-23 13:29:40,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:40,968 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] [2022-07-23 13:29:40,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:41,191 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 [2022-07-23 13:29:41,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2122545154, now seen corresponding path program 2 times [2022-07-23 13:29:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:41,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287660386] [2022-07-23 13:29:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 13:29:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 13:29:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-23 13:29:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:41,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287660386] [2022-07-23 13:29:41,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287660386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:29:41,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:29:41,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:29:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403523281] [2022-07-23 13:29:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:29:41,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:29:41,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:29:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:29:41,239 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:29:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:41,260 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2022-07-23 13:29:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:29:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2022-07-23 13:29:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:41,262 INFO L225 Difference]: With dead ends: 176 [2022-07-23 13:29:41,262 INFO L226 Difference]: Without dead ends: 175 [2022-07-23 13:29:41,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:29:41,263 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:41,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-23 13:29:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-23 13:29:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 140 states have internal predecessors, (155), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 200 transitions. [2022-07-23 13:29:41,279 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 200 transitions. Word has length 81 [2022-07-23 13:29:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:41,280 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 200 transitions. [2022-07-23 13:29:41,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:29:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 200 transitions. [2022-07-23 13:29:41,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-23 13:29:41,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:41,285 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2022-07-23 13:29:41,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 13:29:41,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:41,285 INFO L85 PathProgramCache]: Analyzing trace with hash -284873213, now seen corresponding path program 3 times [2022-07-23 13:29:41,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:41,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968175003] [2022-07-23 13:29:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:41,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 13:29:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-23 13:29:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-07-23 13:29:41,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968175003] [2022-07-23 13:29:41,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968175003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333257483] [2022-07-23 13:29:41,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:29:41,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:41,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:41,426 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) [2022-07-23 13:29:41,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:29:41,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-23 13:29:41,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 13:29:41,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-23 13:29:41,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-23 13:29:41,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333257483] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:41,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:41,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-07-23 13:29:41,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408195297] [2022-07-23 13:29:41,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:41,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 13:29:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 13:29:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:29:41,651 INFO L87 Difference]: Start difference. First operand 175 states and 200 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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) [2022-07-23 13:29:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:41,718 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2022-07-23 13:29:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:29:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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 114 [2022-07-23 13:29:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:41,720 INFO L225 Difference]: With dead ends: 175 [2022-07-23 13:29:41,720 INFO L226 Difference]: Without dead ends: 173 [2022-07-23 13:29:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:29:41,721 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:29:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-23 13:29:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-23 13:29:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0583941605839415) internal successors, (145), 138 states have internal predecessors, (145), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2022-07-23 13:29:41,730 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 114 [2022-07-23 13:29:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:41,731 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2022-07-23 13:29:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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) [2022-07-23 13:29:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2022-07-23 13:29:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-23 13:29:41,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:41,733 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-07-23 13:29:41,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:41,947 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,SelfDestructingSolverStorable12 [2022-07-23 13:29:41,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1425556519, now seen corresponding path program 4 times [2022-07-23 13:29:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:41,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364849828] [2022-07-23 13:29:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:41,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 13:29:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-23 13:29:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-23 13:29:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364849828] [2022-07-23 13:29:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364849828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285793937] [2022-07-23 13:29:42,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:29:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:42,168 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) [2022-07-23 13:29:42,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:29:42,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:29:42,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:42,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-23 13:29:42,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-23 13:29:42,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-07-23 13:29:43,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285793937] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:43,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:43,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-07-23 13:29:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903955638] [2022-07-23 13:29:43,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-23 13:29:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-23 13:29:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-07-23 13:29:43,304 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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) [2022-07-23 13:29:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:43,381 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2022-07-23 13:29:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 13:29:43,382 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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 166 [2022-07-23 13:29:43,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:43,383 INFO L225 Difference]: With dead ends: 174 [2022-07-23 13:29:43,383 INFO L226 Difference]: Without dead ends: 173 [2022-07-23 13:29:43,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-07-23 13:29:43,384 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:43,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 168 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:29:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-23 13:29:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-23 13:29:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions. [2022-07-23 13:29:43,392 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 166 [2022-07-23 13:29:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions. [2022-07-23 13:29:43,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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) [2022-07-23 13:29:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions. [2022-07-23 13:29:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-23 13:29:43,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:43,398 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-07-23 13:29:43,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-23 13:29:43,621 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,SelfDestructingSolverStorable13 [2022-07-23 13:29:43,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1446613788, now seen corresponding path program 5 times [2022-07-23 13:29:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:43,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412796465] [2022-07-23 13:29:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 13:29:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-23 13:29:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-23 13:29:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-07-23 13:29:44,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412796465] [2022-07-23 13:29:44,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412796465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562932538] [2022-07-23 13:29:44,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:29:44,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:44,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:44,254 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) [2022-07-23 13:29:44,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:29:44,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-07-23 13:29:44,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:44,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-23 13:29:44,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-07-23 13:29:44,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2022-07-23 13:29:49,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562932538] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:49,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:49,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-07-23 13:29:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90303442] [2022-07-23 13:29:49,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:49,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-23 13:29:49,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-23 13:29:49,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-07-23 13:29:49,535 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 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) [2022-07-23 13:29:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:49,644 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2022-07-23 13:29:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 13:29:49,644 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 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 409 [2022-07-23 13:29:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:49,646 INFO L225 Difference]: With dead ends: 174 [2022-07-23 13:29:49,646 INFO L226 Difference]: Without dead ends: 173 [2022-07-23 13:29:49,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-07-23 13:29:49,649 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:49,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 270 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:29:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-23 13:29:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-23 13:29:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 138 states have internal predecessors, (138), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-23 13:29:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2022-07-23 13:29:49,657 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 409 [2022-07-23 13:29:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:49,659 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2022-07-23 13:29:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 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) [2022-07-23 13:29:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2022-07-23 13:29:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2022-07-23 13:29:49,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:49,686 INFO L195 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2022-07-23 13:29:49,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:49,910 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,SelfDestructingSolverStorable14 [2022-07-23 13:29:49,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash -581544090, now seen corresponding path program 6 times [2022-07-23 13:29:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:49,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316786672] [2022-07-23 13:29:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 13:29:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-23 13:29:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-23 13:29:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-23 13:29:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-23 13:29:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-07-23 13:29:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-23 13:29:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:51,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-23 13:29:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-23 13:29:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-23 13:29:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:29:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 13:29:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 13:29:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-07-23 13:29:52,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:52,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316786672] [2022-07-23 13:29:52,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316786672] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:52,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761789755] [2022-07-23 13:29:52,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:29:52,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:52,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:52,195 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) [2022-07-23 13:29:52,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:29:52,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 83 check-sat command(s) [2022-07-23 13:29:52,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:52,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 217 conjunts are in the unsatisfiable core [2022-07-23 13:29:52,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-07-23 13:29:53,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 7863 proven. 7339 refuted. 0 times theorem prover too weak. 26211 trivial. 0 not checked. [2022-07-23 13:30:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761789755] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:17,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:17,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2022-07-23 13:30:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955537103] [2022-07-23 13:30:17,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:17,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-23 13:30:17,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-23 13:30:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-07-23 13:30:17,610 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 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) [2022-07-23 13:30:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:17,718 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2022-07-23 13:30:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-23 13:30:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 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 1064 [2022-07-23 13:30:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:17,724 INFO L225 Difference]: With dead ends: 173 [2022-07-23 13:30:17,724 INFO L226 Difference]: Without dead ends: 0 [2022-07-23 13:30:17,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2559 GetRequests, 2506 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-07-23 13:30:17,726 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:17,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 228 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-23 13:30:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-23 13:30:17,727 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) [2022-07-23 13:30:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 13:30:17,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2022-07-23 13:30:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 13:30:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 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) [2022-07-23 13:30:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-23 13:30:17,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-23 13:30:17,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-23 13:30:17,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-23 13:30:17,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-23 13:30:17,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-23 13:30:17,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-23 13:30:17,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-23 13:30:17,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:17,959 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,SelfDestructingSolverStorable15 [2022-07-23 13:30:17,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2022-07-23 13:30:18,472 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L902 garLoopResultBuilder]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L895 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 1))) [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point L22-4(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,473 INFO L899 garLoopResultBuilder]: For program point L22-5(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,474 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 (and .cse0 (<= |fibonacci_#t~ret4| 2) .cse1) (not (< 3 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4))) (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 (= |fibonacci_#t~ret4| 1) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 5) .cse1) (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|))))) [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L22-7(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L22-8(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L22-9(line 22) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-23 13:30:18,474 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)) [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-07-23 13:30:18,474 INFO L895 garLoopResultBuilder]: At program point L27(lines 27 35) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 9) [2022-07-23 13:30:18,477 INFO L356 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1] [2022-07-23 13:30:18,482 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 13:30:18,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:30:18 BoogieIcfgContainer [2022-07-23 13:30:18,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 13:30:18,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 13:30:18,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 13:30:18,494 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 13:30:18,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:29:32" (3/4) ... [2022-07-23 13:30:18,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-23 13:30:18,500 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2022-07-23 13:30:18,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-23 13:30:18,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-23 13:30:18,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-23 13:30:18,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-23 13:30:18,524 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 13:30:18,525 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 13:30:18,525 INFO L158 Benchmark]: Toolchain (without parser) took 46088.91ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 63.8MB in the beginning and 166.2MB in the end (delta: -102.4MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,525 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:30:18,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.57ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 73.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.86ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 72.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,526 INFO L158 Benchmark]: Boogie Preprocessor took 11.85ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 71.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 13:30:18,526 INFO L158 Benchmark]: RCFGBuilder took 208.33ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 62.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,527 INFO L158 Benchmark]: TraceAbstraction took 45607.37ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 61.7MB in the beginning and 168.3MB in the end (delta: -106.6MB). Peak memory consumption was 150.0MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,527 INFO L158 Benchmark]: Witness Printer took 31.21ms. Allocated memory is still 249.6MB. Free memory was 168.3MB in the beginning and 166.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 13:30:18,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.57ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 73.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.86ms. Allocated memory is still 96.5MB. Free memory was 73.9MB in the beginning and 72.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.85ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 71.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.33ms. Allocated memory is still 96.5MB. Free memory was 71.4MB in the beginning and 62.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 45607.37ms. Allocated memory was 96.5MB in the beginning and 249.6MB in the end (delta: 153.1MB). Free memory was 61.7MB in the beginning and 168.3MB in the end (delta: -106.6MB). Peak memory consumption was 150.0MB. Max. memory is 16.1GB. * Witness Printer took 31.21ms. Allocated memory is still 249.6MB. Free memory was 168.3MB in the beginning and 166.2MB in the end (delta: 2.1MB). 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: 45.5s, OverallIterations: 16, TraceHistogramMax: 109, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1599 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1547 mSDsluCounter, 2755 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2295 mSDsCounter, 570 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3650 IncrementalHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 570 mSolverCounterUnsat, 460 mSDtfsCounter, 3650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5207 GetRequests, 4862 SyntacticMatches, 6 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=8, InterpolantAutomatonStates: 231, 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, 16 MinimizatonAttempts, 133 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 368 PreInvPairs, 401 NumberOfFragments, 159 HoareAnnotationTreeSize, 368 FomulaSimplifications, 989 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1027 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 4518 NumberOfCodeBlocks, 4407 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 6623 ConstructedInterpolants, 0 QuantifiedInterpolants, 15579 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4060 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 122659/150242 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: x <= 9 RESULT: Ultimate proved your program to be correct! [2022-07-23 13:30:18,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE