./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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/Fibonacci05.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 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:48:25,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:48:25,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:48:26,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:48:26,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:48:26,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:48:26,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:48:26,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:48:26,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:48:26,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:48:26,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:48:26,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:48:26,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:48:26,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:48:26,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:48:26,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:48:26,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:48:26,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:48:26,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:48:26,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:48:26,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:48:26,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:48:26,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:48:26,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:48:26,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:48:26,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:48:26,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:48:26,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:48:26,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:48:26,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:48:26,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:48:26,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:48:26,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:48:26,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:48:26,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:48:26,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:48:26,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:48:26,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:48:26,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:48:26,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:48:26,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:48:26,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:48:26,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:48:26,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:48:26,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:48:26,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:48:26,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:48:26,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:48:26,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:48:26,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:48:26,103 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:48:26,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:48:26,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:48:26,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:48:26,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:48:26,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:48:26,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:48:26,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:48:26,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:48:26,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:48:26,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:48:26,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:48:26,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:48:26,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:48:26,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:48:26,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:48:26,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd [2021-12-21 20:48:26,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:48:26,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:48:26,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:48:26,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:48:26,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:48:26,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci05.c [2021-12-21 20:48:26,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf924c01/5d9dffd916554d599808ac2635ffba16/FLAGd7f8bed84 [2021-12-21 20:48:26,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:48:26,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci05.c [2021-12-21 20:48:26,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf924c01/5d9dffd916554d599808ac2635ffba16/FLAGd7f8bed84 [2021-12-21 20:48:27,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bf924c01/5d9dffd916554d599808ac2635ffba16 [2021-12-21 20:48:27,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:48:27,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:48:27,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:48:27,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:48:27,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:48:27,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e342b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27, skipping insertion in model container [2021-12-21 20:48:27,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:48:27,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:48:27,302 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/Fibonacci05.c[746,759] [2021-12-21 20:48:27,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:48:27,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:48:27,317 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/Fibonacci05.c[746,759] [2021-12-21 20:48:27,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:48:27,325 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:48:27,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27 WrapperNode [2021-12-21 20:48:27,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:48:27,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:48:27,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:48:27,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:48:27,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,352 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-21 20:48:27,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:48:27,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:48:27,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:48:27,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:48:27,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:48:27,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:48:27,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:48:27,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:48:27,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (1/1) ... [2021-12-21 20:48:27,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:48:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:27,385 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) [2021-12-21 20:48:27,401 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 [2021-12-21 20:48:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-12-21 20:48:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-12-21 20:48:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:48:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:48:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:48:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:48:27,464 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:48:27,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:48:27,560 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:48:27,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:48:27,564 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 20:48:27,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:48:27 BoogieIcfgContainer [2021-12-21 20:48:27,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:48:27,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:48:27,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:48:27,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:48:27,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:48:27" (1/3) ... [2021-12-21 20:48:27,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32bf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:48:27, skipping insertion in model container [2021-12-21 20:48:27,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:27" (2/3) ... [2021-12-21 20:48:27,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32bf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:48:27, skipping insertion in model container [2021-12-21 20:48:27,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:48:27" (3/3) ... [2021-12-21 20:48:27,584 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2021-12-21 20:48:27,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:48:27,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-21 20:48:27,615 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:48:27,622 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 20:48:27,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 20:48:27,639 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) [2021-12-21 20:48:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 20:48:27,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:27,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:27,643 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash -108718961, now seen corresponding path program 1 times [2021-12-21 20:48:27,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:27,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466339455] [2021-12-21 20:48:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:27,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:48:27,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:27,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466339455] [2021-12-21 20:48:27,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466339455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:27,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:27,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:27,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807911886] [2021-12-21 20:48:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:27,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:27,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:27,799 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) [2021-12-21 20:48:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:27,890 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-12-21 20:48:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:27,892 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 [2021-12-21 20:48:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:27,897 INFO L225 Difference]: With dead ends: 33 [2021-12-21 20:48:27,897 INFO L226 Difference]: Without dead ends: 22 [2021-12-21 20:48:27,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:48:27,901 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:27,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-21 20:48:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-21 20:48:27,922 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) [2021-12-21 20:48:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-21 20:48:27,924 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2021-12-21 20:48:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:27,924 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-21 20:48:27,924 INFO L471 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) [2021-12-21 20:48:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-21 20:48:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:48:27,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:27,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:27,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:48:27,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 924679547, now seen corresponding path program 1 times [2021-12-21 20:48:27,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527537940] [2021-12-21 20:48:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:27,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:48:27,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:27,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527537940] [2021-12-21 20:48:27,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527537940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:27,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:27,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:48:27,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274067795] [2021-12-21 20:48:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:27,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:48:27,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:48:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:48:27,954 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) [2021-12-21 20:48:27,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:27,966 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-12-21 20:48:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:48:27,966 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 [2021-12-21 20:48:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:27,968 INFO L225 Difference]: With dead ends: 24 [2021-12-21 20:48:27,968 INFO L226 Difference]: Without dead ends: 22 [2021-12-21 20:48:27,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:48:27,970 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:27,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-21 20:48:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-21 20:48:27,975 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) [2021-12-21 20:48:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-21 20:48:27,976 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2021-12-21 20:48:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:27,976 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-21 20:48:27,976 INFO L471 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) [2021-12-21 20:48:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-21 20:48:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 20:48:27,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:27,977 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:27,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:48:27,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1244761165, now seen corresponding path program 1 times [2021-12-21 20:48:27,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:27,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947507497] [2021-12-21 20:48:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:27,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 20:48:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 20:48:28,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:28,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947507497] [2021-12-21 20:48:28,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947507497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:28,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:28,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:28,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823365613] [2021-12-21 20:48:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:28,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:28,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:28,075 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) [2021-12-21 20:48:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:28,104 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2021-12-21 20:48:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:28,105 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 [2021-12-21 20:48:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:28,106 INFO L225 Difference]: With dead ends: 36 [2021-12-21 20:48:28,106 INFO L226 Difference]: Without dead ends: 34 [2021-12-21 20:48:28,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:28,107 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:28,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-21 20:48:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-12-21 20:48:28,116 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) [2021-12-21 20:48:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-21 20:48:28,120 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2021-12-21 20:48:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:28,120 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-21 20:48:28,121 INFO L471 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) [2021-12-21 20:48:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-21 20:48:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 20:48:28,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:28,122 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:28,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:48:28,122 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 78572347, now seen corresponding path program 1 times [2021-12-21 20:48:28,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519236789] [2021-12-21 20:48:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:28,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 20:48:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:28,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:28,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519236789] [2021-12-21 20:48:28,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519236789] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:28,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641358653] [2021-12-21 20:48:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:28,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:28,197 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) [2021-12-21 20:48:28,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:48:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:28,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 20:48:28,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 20:48:28,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 20:48:28,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641358653] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:28,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:28,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-12-21 20:48:28,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674945843] [2021-12-21 20:48:28,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:28,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:48:28,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:48:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:48:28,581 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:48:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:28,826 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-12-21 20:48:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:28,827 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2021-12-21 20:48:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:28,828 INFO L225 Difference]: With dead ends: 90 [2021-12-21 20:48:28,828 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 20:48:28,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-12-21 20:48:28,831 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 166 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:28,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 71 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 20:48:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-12-21 20:48:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-21 20:48:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2021-12-21 20:48:28,841 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2021-12-21 20:48:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:28,842 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2021-12-21 20:48:28,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:48:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2021-12-21 20:48:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 20:48:28,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:28,844 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:28,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:29,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:29,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1928011015, now seen corresponding path program 2 times [2021-12-21 20:48:29,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:29,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411818480] [2021-12-21 20:48:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:29,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 20:48:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:29,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411818480] [2021-12-21 20:48:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411818480] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539642187] [2021-12-21 20:48:29,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:29,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:29,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:29,115 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) [2021-12-21 20:48:29,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:48:29,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:29,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:29,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:48:29,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:29,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:48:29,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539642187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:29,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 20:48:29,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-12-21 20:48:29,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743817827] [2021-12-21 20:48:29,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:29,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:29,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 20:48:29,202 INFO L87 Difference]: Start difference. First operand 52 states and 67 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) [2021-12-21 20:48:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:29,216 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2021-12-21 20:48:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:29,217 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 24 [2021-12-21 20:48:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:29,218 INFO L225 Difference]: With dead ends: 60 [2021-12-21 20:48:29,218 INFO L226 Difference]: Without dead ends: 59 [2021-12-21 20:48:29,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 20:48:29,219 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:29,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 61 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-21 20:48:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-12-21 20:48:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-21 20:48:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-12-21 20:48:29,229 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2021-12-21 20:48:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:29,230 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-12-21 20:48:29,230 INFO L471 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) [2021-12-21 20:48:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-12-21 20:48:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 20:48:29,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:29,231 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:29,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:29,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:29,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 361200733, now seen corresponding path program 1 times [2021-12-21 20:48:29,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:29,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701098051] [2021-12-21 20:48:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:29,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 20:48:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:29,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701098051] [2021-12-21 20:48:29,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701098051] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643033907] [2021-12-21 20:48:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:29,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:29,503 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) [2021-12-21 20:48:29,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:48:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:48:29,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:29,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:29,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643033907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:29,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:29,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2021-12-21 20:48:29,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975472252] [2021-12-21 20:48:29,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:29,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 20:48:29,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 20:48:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 20:48:29,671 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:48:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:29,737 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2021-12-21 20:48:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 20:48:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2021-12-21 20:48:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:29,738 INFO L225 Difference]: With dead ends: 69 [2021-12-21 20:48:29,738 INFO L226 Difference]: Without dead ends: 68 [2021-12-21 20:48:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:48:29,739 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:29,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-21 20:48:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-12-21 20:48:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 12 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-21 20:48:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2021-12-21 20:48:29,747 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 25 [2021-12-21 20:48:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:29,747 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2021-12-21 20:48:29,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:48:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2021-12-21 20:48:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-21 20:48:29,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:29,749 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:29,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 20:48:29,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:29,964 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2070735929, now seen corresponding path program 1 times [2021-12-21 20:48:29,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571702942] [2021-12-21 20:48:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:29,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 20:48:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 20:48:30,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571702942] [2021-12-21 20:48:30,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571702942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089768501] [2021-12-21 20:48:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:30,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:30,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:30,069 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) [2021-12-21 20:48:30,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:48:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 20:48:30,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-21 20:48:30,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 20:48:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089768501] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:30,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2021-12-21 20:48:30,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998627301] [2021-12-21 20:48:30,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:30,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:48:30,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:48:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:48:30,390 INFO L87 Difference]: Start difference. First operand 66 states and 90 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) [2021-12-21 20:48:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:30,503 INFO L93 Difference]: Finished difference Result 137 states and 204 transitions. [2021-12-21 20:48:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 20:48:30,503 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 50 [2021-12-21 20:48:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:30,509 INFO L225 Difference]: With dead ends: 137 [2021-12-21 20:48:30,509 INFO L226 Difference]: Without dead ends: 136 [2021-12-21 20:48:30,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-21 20:48:30,510 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:30,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 138 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-21 20:48:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2021-12-21 20:48:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2021-12-21 20:48:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2021-12-21 20:48:30,532 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 50 [2021-12-21 20:48:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:30,532 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2021-12-21 20:48:30,532 INFO L471 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) [2021-12-21 20:48:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2021-12-21 20:48:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 20:48:30,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:30,534 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2021-12-21 20:48:30,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:30,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:30,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1000556028, now seen corresponding path program 1 times [2021-12-21 20:48:30,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396518718] [2021-12-21 20:48:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:30,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 20:48:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 20:48:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 20:48:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-21 20:48:30,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:30,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396518718] [2021-12-21 20:48:30,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396518718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:30,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:30,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:30,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201520631] [2021-12-21 20:48:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:30,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:30,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:30,820 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-12-21 20:48:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:30,838 INFO L93 Difference]: Finished difference Result 111 states and 173 transitions. [2021-12-21 20:48:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 69 [2021-12-21 20:48:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:30,840 INFO L225 Difference]: With dead ends: 111 [2021-12-21 20:48:30,840 INFO L226 Difference]: Without dead ends: 110 [2021-12-21 20:48:30,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:30,841 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:30,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-21 20:48:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2021-12-21 20:48:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2021-12-21 20:48:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2021-12-21 20:48:30,862 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 69 [2021-12-21 20:48:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:30,863 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2021-12-21 20:48:30,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-12-21 20:48:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2021-12-21 20:48:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 20:48:30,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:30,867 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-12-21 20:48:30,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 20:48:30,867 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash 229299331, now seen corresponding path program 2 times [2021-12-21 20:48:30,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:30,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058488770] [2021-12-21 20:48:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:30,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 20:48:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-21 20:48:30,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:30,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058488770] [2021-12-21 20:48:30,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058488770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:30,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:30,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:30,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507129083] [2021-12-21 20:48:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:30,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:30,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:30,932 INFO L87 Difference]: Start difference. First operand 98 states and 159 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) [2021-12-21 20:48:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:30,951 INFO L93 Difference]: Finished difference Result 111 states and 173 transitions. [2021-12-21 20:48:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:30,951 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 64 [2021-12-21 20:48:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:30,953 INFO L225 Difference]: With dead ends: 111 [2021-12-21 20:48:30,953 INFO L226 Difference]: Without dead ends: 110 [2021-12-21 20:48:30,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:30,956 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:30,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 61 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-21 20:48:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2021-12-21 20:48:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2021-12-21 20:48:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2021-12-21 20:48:30,969 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 64 [2021-12-21 20:48:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:30,969 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2021-12-21 20:48:30,969 INFO L471 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) [2021-12-21 20:48:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2021-12-21 20:48:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-21 20:48:30,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:30,971 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1] [2021-12-21 20:48:30,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 20:48:30,971 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash -26129180, now seen corresponding path program 2 times [2021-12-21 20:48:30,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:30,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015533607] [2021-12-21 20:48:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 20:48:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 61 proven. 158 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-21 20:48:31,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:31,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015533607] [2021-12-21 20:48:31,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015533607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:31,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068649681] [2021-12-21 20:48:31,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:31,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:31,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:31,151 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) [2021-12-21 20:48:31,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:48:31,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:31,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:31,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 20:48:31,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 206 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-21 20:48:31,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 209 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-21 20:48:31,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068649681] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:31,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:31,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2021-12-21 20:48:31,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216900154] [2021-12-21 20:48:31,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:31,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 20:48:31,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:31,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 20:48:31,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:31,773 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-21 20:48:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:31,872 INFO L93 Difference]: Finished difference Result 177 states and 302 transitions. [2021-12-21 20:48:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) Word has length 122 [2021-12-21 20:48:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:31,873 INFO L225 Difference]: With dead ends: 177 [2021-12-21 20:48:31,873 INFO L226 Difference]: Without dead ends: 82 [2021-12-21 20:48:31,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-12-21 20:48:31,875 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:31,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 59 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-21 20:48:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2021-12-21 20:48:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-21 20:48:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2021-12-21 20:48:31,880 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 122 [2021-12-21 20:48:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:31,881 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2021-12-21 20:48:31,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-21 20:48:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2021-12-21 20:48:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 20:48:31,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:31,882 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1] [2021-12-21 20:48:31,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-21 20:48:32,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 20:48:32,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1118564703, now seen corresponding path program 3 times [2021-12-21 20:48:32,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082213832] [2021-12-21 20:48:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:32,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 20:48:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 55 proven. 134 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-12-21 20:48:32,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:32,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082213832] [2021-12-21 20:48:32,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082213832] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:32,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963464930] [2021-12-21 20:48:32,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:32,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:32,211 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) [2021-12-21 20:48:32,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:48:32,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-21 20:48:32,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:32,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:48:32,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 200 proven. 21 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-12-21 20:48:32,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 200 proven. 22 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-21 20:48:32,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963464930] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:32,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:32,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2021-12-21 20:48:32,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279694233] [2021-12-21 20:48:32,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:32,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 20:48:32,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 20:48:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:32,734 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-21 20:48:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:32,839 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2021-12-21 20:48:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) Word has length 128 [2021-12-21 20:48:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:32,840 INFO L225 Difference]: With dead ends: 124 [2021-12-21 20:48:32,840 INFO L226 Difference]: Without dead ends: 58 [2021-12-21 20:48:32,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-12-21 20:48:32,841 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:32,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 97 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-21 20:48:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-12-21 20:48:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 states have internal predecessors, (49), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-21 20:48:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-12-21 20:48:32,844 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 128 [2021-12-21 20:48:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-12-21 20:48:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-21 20:48:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-12-21 20:48:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 20:48:32,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:32,845 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1] [2021-12-21 20:48:32,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:33,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:33,062 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash 206679411, now seen corresponding path program 4 times [2021-12-21 20:48:33,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:33,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340214064] [2021-12-21 20:48:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:33,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 20:48:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 82 proven. 129 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-21 20:48:33,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340214064] [2021-12-21 20:48:33,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340214064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:33,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695519222] [2021-12-21 20:48:33,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:48:33,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:33,199 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) [2021-12-21 20:48:33,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 20:48:33,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:48:33,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:33,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 20:48:33,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 20:48:33,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-21 20:48:33,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695519222] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:33,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:33,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 23 [2021-12-21 20:48:33,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497037322] [2021-12-21 20:48:33,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:33,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 20:48:33,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 20:48:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-21 20:48:33,894 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2021-12-21 20:48:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:34,017 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2021-12-21 20:48:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 20:48:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) Word has length 103 [2021-12-21 20:48:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:34,018 INFO L225 Difference]: With dead ends: 127 [2021-12-21 20:48:34,018 INFO L226 Difference]: Without dead ends: 74 [2021-12-21 20:48:34,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=274, Invalid=656, Unknown=0, NotChecked=0, Total=930 [2021-12-21 20:48:34,019 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 146 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:34,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 81 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-21 20:48:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2021-12-21 20:48:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.08) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-12-21 20:48:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-21 20:48:34,023 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 103 [2021-12-21 20:48:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:34,023 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-21 20:48:34,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2021-12-21 20:48:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-21 20:48:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-21 20:48:34,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:34,023 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2021-12-21 20:48:34,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:34,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:34,228 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 525285519, now seen corresponding path program 3 times [2021-12-21 20:48:34,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612534773] [2021-12-21 20:48:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:34,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 20:48:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-21 20:48:34,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612534773] [2021-12-21 20:48:34,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612534773] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166702530] [2021-12-21 20:48:34,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:34,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:34,317 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) [2021-12-21 20:48:34,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 20:48:34,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-21 20:48:34,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:34,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:48:34,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-21 20:48:34,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-21 20:48:34,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166702530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:34,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:34,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2021-12-21 20:48:34,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962100827] [2021-12-21 20:48:34,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:34,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:48:34,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:48:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:48:34,670 INFO L87 Difference]: Start difference. First operand 64 states and 72 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) [2021-12-21 20:48:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:34,734 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2021-12-21 20:48:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 20:48:34,735 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 90 [2021-12-21 20:48:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:34,735 INFO L225 Difference]: With dead ends: 64 [2021-12-21 20:48:34,735 INFO L226 Difference]: Without dead ends: 63 [2021-12-21 20:48:34,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:34,736 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:34,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 186 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-21 20:48:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-21 20:48:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 50 states have (on average 1.06) internal successors, (53), 48 states have internal predecessors, (53), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-12-21 20:48:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-12-21 20:48:34,741 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 90 [2021-12-21 20:48:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:34,741 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-12-21 20:48:34,742 INFO L471 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) [2021-12-21 20:48:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-12-21 20:48:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-21 20:48:34,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:34,743 INFO L514 BasicCegarLoop]: trace histogram [23, 21, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 7, 5, 1, 1, 1, 1] [2021-12-21 20:48:34,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:34,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 20:48:34,959 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 354106258, now seen corresponding path program 5 times [2021-12-21 20:48:34,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:34,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219747164] [2021-12-21 20:48:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:34,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 20:48:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 20:48:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 232 proven. 545 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-12-21 20:48:35,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219747164] [2021-12-21 20:48:35,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219747164] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960869004] [2021-12-21 20:48:35,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:48:35,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:35,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:35,199 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) [2021-12-21 20:48:35,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 20:48:35,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-21 20:48:35,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:35,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-21 20:48:35,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 634 proven. 377 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-21 20:48:35,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 295 proven. 507 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-12-21 20:48:36,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960869004] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:36,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:36,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 15] total 28 [2021-12-21 20:48:36,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513034498] [2021-12-21 20:48:36,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:36,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-21 20:48:36,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-21 20:48:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2021-12-21 20:48:36,255 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 17 states have call successors, (26), 4 states have call predecessors, (26), 12 states have return successors, (30), 19 states have call predecessors, (30), 15 states have call successors, (30) [2021-12-21 20:48:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:36,516 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2021-12-21 20:48:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 20:48:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 17 states have call successors, (26), 4 states have call predecessors, (26), 12 states have return successors, (30), 19 states have call predecessors, (30), 15 states have call successors, (30) Word has length 215 [2021-12-21 20:48:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:36,518 INFO L225 Difference]: With dead ends: 152 [2021-12-21 20:48:36,518 INFO L226 Difference]: Without dead ends: 94 [2021-12-21 20:48:36,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 457 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-12-21 20:48:36,519 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 218 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:36,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 175 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-21 20:48:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2021-12-21 20:48:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.064516129032258) internal successors, (66), 60 states have internal predecessors, (66), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-21 20:48:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-12-21 20:48:36,526 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 215 [2021-12-21 20:48:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:36,526 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-12-21 20:48:36,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 17 states have call successors, (26), 4 states have call predecessors, (26), 12 states have return successors, (30), 19 states have call predecessors, (30), 15 states have call successors, (30) [2021-12-21 20:48:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-12-21 20:48:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 20:48:36,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:36,528 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2021-12-21 20:48:36,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:36,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 20:48:36,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1531601075, now seen corresponding path program 6 times [2021-12-21 20:48:36,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:36,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615038765] [2021-12-21 20:48:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:36,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 20:48:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-12-21 20:48:36,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615038765] [2021-12-21 20:48:36,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615038765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672331755] [2021-12-21 20:48:36,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 20:48:36,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:36,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:36,923 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) [2021-12-21 20:48:36,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 20:48:37,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-12-21 20:48:37,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:37,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-21 20:48:37,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-12-21 20:48:37,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-21 20:48:38,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672331755] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:38,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:38,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2021-12-21 20:48:38,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734198243] [2021-12-21 20:48:38,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:38,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 20:48:38,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 20:48:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:48:38,146 INFO L87 Difference]: Start difference. First operand 78 states and 90 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) [2021-12-21 20:48:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:38,267 INFO L93 Difference]: Finished difference Result 131 states and 171 transitions. [2021-12-21 20:48:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-21 20:48:38,267 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 142 [2021-12-21 20:48:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:38,269 INFO L225 Difference]: With dead ends: 131 [2021-12-21 20:48:38,269 INFO L226 Difference]: Without dead ends: 130 [2021-12-21 20:48:38,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-12-21 20:48:38,272 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:38,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 195 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-21 20:48:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2021-12-21 20:48:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 89 states have internal predecessors, (96), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (41), 19 states have call predecessors, (41), 12 states have call successors, (41) [2021-12-21 20:48:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2021-12-21 20:48:38,280 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 142 [2021-12-21 20:48:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:38,282 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2021-12-21 20:48:38,282 INFO L471 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) [2021-12-21 20:48:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2021-12-21 20:48:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-12-21 20:48:38,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:38,287 INFO L514 BasicCegarLoop]: trace histogram [47, 45, 38, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 21, 21, 15, 9, 1, 1, 1, 1] [2021-12-21 20:48:38,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:38,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 20:48:38,510 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 753865962, now seen corresponding path program 7 times [2021-12-21 20:48:38,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:38,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733136158] [2021-12-21 20:48:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:38,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 20:48:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-21 20:48:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7288 backedges. 586 proven. 2180 refuted. 0 times theorem prover too weak. 4522 trivial. 0 not checked. [2021-12-21 20:48:38,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:38,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733136158] [2021-12-21 20:48:38,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733136158] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:38,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67517086] [2021-12-21 20:48:38,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-21 20:48:38,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:38,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:38,883 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) [2021-12-21 20:48:38,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 20:48:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 20:48:39,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7288 backedges. 3845 proven. 1245 refuted. 0 times theorem prover too weak. 2198 trivial. 0 not checked. [2021-12-21 20:48:39,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7288 backedges. 637 proven. 2493 refuted. 0 times theorem prover too weak. 4158 trivial. 0 not checked. [2021-12-21 20:48:40,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67517086] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:40,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:40,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 22] total 33 [2021-12-21 20:48:40,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785578600] [2021-12-21 20:48:40,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:41,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 20:48:41,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 20:48:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2021-12-21 20:48:41,001 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand has 33 states, 33 states have (on average 5.515151515151516) internal successors, (182), 33 states have internal predecessors, (182), 29 states have call successors, (35), 3 states have call predecessors, (35), 11 states have return successors, (44), 18 states have call predecessors, (44), 28 states have call successors, (44) [2021-12-21 20:48:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:41,316 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2021-12-21 20:48:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 20:48:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.515151515151516) internal successors, (182), 33 states have internal predecessors, (182), 29 states have call successors, (35), 3 states have call predecessors, (35), 11 states have return successors, (44), 18 states have call predecessors, (44), 28 states have call successors, (44) Word has length 451 [2021-12-21 20:48:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:41,318 INFO L225 Difference]: With dead ends: 270 [2021-12-21 20:48:41,318 INFO L226 Difference]: Without dead ends: 159 [2021-12-21 20:48:41,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 981 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=661, Invalid=1789, Unknown=0, NotChecked=0, Total=2450 [2021-12-21 20:48:41,320 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 300 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:41,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 144 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-21 20:48:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 142. [2021-12-21 20:48:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 114 states have (on average 1.0614035087719298) internal successors, (121), 109 states have internal predecessors, (121), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (41), 22 states have call predecessors, (41), 15 states have call successors, (41) [2021-12-21 20:48:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2021-12-21 20:48:41,329 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 451 [2021-12-21 20:48:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:41,329 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2021-12-21 20:48:41,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.515151515151516) internal successors, (182), 33 states have internal predecessors, (182), 29 states have call successors, (35), 3 states have call predecessors, (35), 11 states have return successors, (44), 18 states have call predecessors, (44), 28 states have call successors, (44) [2021-12-21 20:48:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2021-12-21 20:48:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-12-21 20:48:41,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:41,332 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 10, 6, 1, 1, 1, 1] [2021-12-21 20:48:41,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:41,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 20:48:41,551 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash -93384261, now seen corresponding path program 8 times [2021-12-21 20:48:41,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:41,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005764554] [2021-12-21 20:48:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:41,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 20:48:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 582 proven. 736 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2021-12-21 20:48:41,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:41,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005764554] [2021-12-21 20:48:41,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005764554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759084846] [2021-12-21 20:48:41,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:41,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:41,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:41,805 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:41,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 20:48:41,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:41,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:41,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 20:48:41,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1778 proven. 484 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-12-21 20:48:42,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 504 proven. 1101 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2021-12-21 20:48:43,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759084846] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:43,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:43,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 27 [2021-12-21 20:48:43,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850558521] [2021-12-21 20:48:43,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:43,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 20:48:43,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 20:48:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:48:43,548 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 22 states have call successors, (28), 2 states have call predecessors, (28), 10 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2021-12-21 20:48:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:43,814 INFO L93 Difference]: Finished difference Result 254 states and 345 transitions. [2021-12-21 20:48:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 20:48:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 22 states have call successors, (28), 2 states have call predecessors, (28), 10 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) Word has length 299 [2021-12-21 20:48:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:43,816 INFO L225 Difference]: With dead ends: 254 [2021-12-21 20:48:43,816 INFO L226 Difference]: Without dead ends: 117 [2021-12-21 20:48:43,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2021-12-21 20:48:43,817 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 184 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:43,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 180 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-21 20:48:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2021-12-21 20:48:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 82 states have internal predecessors, (87), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-21 20:48:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2021-12-21 20:48:43,823 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 299 [2021-12-21 20:48:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:43,823 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2021-12-21 20:48:43,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 22 states have call successors, (28), 2 states have call predecessors, (28), 10 states have return successors, (36), 14 states have call predecessors, (36), 22 states have call successors, (36) [2021-12-21 20:48:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2021-12-21 20:48:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2021-12-21 20:48:43,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:43,829 INFO L514 BasicCegarLoop]: trace histogram [51, 50, 41, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 16, 10, 1, 1, 1, 1] [2021-12-21 20:48:43,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-21 20:48:44,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 20:48:44,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1147574453, now seen corresponding path program 9 times [2021-12-21 20:48:44,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577514885] [2021-12-21 20:48:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:44,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-21 20:48:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1094 proven. 2322 refuted. 0 times theorem prover too weak. 5380 trivial. 0 not checked. [2021-12-21 20:48:44,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577514885] [2021-12-21 20:48:44,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577514885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626811195] [2021-12-21 20:48:44,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:44,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:44,558 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:44,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 20:48:44,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-12-21 20:48:44,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:44,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 20:48:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1713 proven. 1024 refuted. 0 times theorem prover too weak. 6059 trivial. 0 not checked. [2021-12-21 20:48:45,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1721 proven. 1063 refuted. 0 times theorem prover too weak. 6012 trivial. 0 not checked. [2021-12-21 20:48:46,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626811195] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:46,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:46,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 19] total 34 [2021-12-21 20:48:46,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212341399] [2021-12-21 20:48:46,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:46,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-21 20:48:46,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-21 20:48:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2021-12-21 20:48:46,590 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 34 states, 34 states have (on average 4.9411764705882355) internal successors, (168), 34 states have internal predecessors, (168), 21 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 27 states have call predecessors, (42), 21 states have call successors, (42) [2021-12-21 20:48:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:47,016 INFO L93 Difference]: Finished difference Result 259 states and 337 transitions. [2021-12-21 20:48:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-21 20:48:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.9411764705882355) internal successors, (168), 34 states have internal predecessors, (168), 21 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 27 states have call predecessors, (42), 21 states have call successors, (42) Word has length 495 [2021-12-21 20:48:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:47,018 INFO L225 Difference]: With dead ends: 259 [2021-12-21 20:48:47,019 INFO L226 Difference]: Without dead ends: 159 [2021-12-21 20:48:47,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1078 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=749, Invalid=2221, Unknown=0, NotChecked=0, Total=2970 [2021-12-21 20:48:47,020 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 392 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:47,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 188 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 20:48:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-21 20:48:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 135. [2021-12-21 20:48:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 106 states have internal predecessors, (114), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2021-12-21 20:48:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2021-12-21 20:48:47,027 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 495 [2021-12-21 20:48:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:47,027 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2021-12-21 20:48:47,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.9411764705882355) internal successors, (168), 34 states have internal predecessors, (168), 21 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 27 states have call predecessors, (42), 21 states have call successors, (42) [2021-12-21 20:48:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2021-12-21 20:48:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-21 20:48:47,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:47,029 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 28, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 11, 7, 1, 1, 1, 1] [2021-12-21 20:48:47,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:47,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 20:48:47,246 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:47,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1882305975, now seen corresponding path program 10 times [2021-12-21 20:48:47,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:47,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782202237] [2021-12-21 20:48:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:47,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-21 20:48:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 951 proven. 816 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2021-12-21 20:48:47,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782202237] [2021-12-21 20:48:47,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782202237] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816815235] [2021-12-21 20:48:47,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:48:47,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:47,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:47,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:47,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 20:48:47,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:48:47,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:47,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 20:48:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 840 proven. 1214 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-12-21 20:48:48,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 840 proven. 1290 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2021-12-21 20:48:49,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816815235] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:49,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:49,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 23] total 33 [2021-12-21 20:48:49,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365847541] [2021-12-21 20:48:49,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:49,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 20:48:49,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 20:48:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2021-12-21 20:48:49,465 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 27 states have call successors, (31), 1 states have call predecessors, (31), 11 states have return successors, (42), 18 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-21 20:48:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:49,790 INFO L93 Difference]: Finished difference Result 278 states and 363 transitions. [2021-12-21 20:48:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 20:48:49,790 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 27 states have call successors, (31), 1 states have call predecessors, (31), 11 states have return successors, (42), 18 states have call predecessors, (42), 27 states have call successors, (42) Word has length 338 [2021-12-21 20:48:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:49,792 INFO L225 Difference]: With dead ends: 278 [2021-12-21 20:48:49,792 INFO L226 Difference]: Without dead ends: 148 [2021-12-21 20:48:49,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 728 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-12-21 20:48:49,793 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 213 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:49,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 209 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-21 20:48:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-12-21 20:48:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 states have internal predecessors, (102), 16 states have call successors, (16), 12 states have call predecessors, (16), 8 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) [2021-12-21 20:48:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2021-12-21 20:48:49,799 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 338 [2021-12-21 20:48:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:49,799 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2021-12-21 20:48:49,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.090909090909091) internal successors, (168), 33 states have internal predecessors, (168), 27 states have call successors, (31), 1 states have call predecessors, (31), 11 states have return successors, (42), 18 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-21 20:48:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2021-12-21 20:48:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-12-21 20:48:49,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:49,801 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2021-12-21 20:48:49,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:50,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:50,015 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 990500758, now seen corresponding path program 11 times [2021-12-21 20:48:50,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:50,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794671570] [2021-12-21 20:48:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:50,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:48:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-21 20:48:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2021-12-21 20:48:50,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794671570] [2021-12-21 20:48:50,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794671570] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48943221] [2021-12-21 20:48:50,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:48:50,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:50,460 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:50,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 20:48:50,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-12-21 20:48:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:50,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-21 20:48:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2021-12-21 20:48:51,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2021-12-21 20:48:55,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48943221] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:55,435 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:55,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2021-12-21 20:48:55,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867346939] [2021-12-21 20:48:55,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:55,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-21 20:48:55,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-21 20:48:55,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-12-21 20:48:55,437 INFO L87 Difference]: Start difference. First operand 124 states and 153 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) [2021-12-21 20:48:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:55,573 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2021-12-21 20:48:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 20:48:55,573 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 397 [2021-12-21 20:48:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:55,575 INFO L225 Difference]: With dead ends: 155 [2021-12-21 20:48:55,575 INFO L226 Difference]: Without dead ends: 154 [2021-12-21 20:48:55,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2021-12-21 20:48:55,576 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 77 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:55,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 304 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-21 20:48:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 144. [2021-12-21 20:48:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 113 states have internal predecessors, (118), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (55), 18 states have call predecessors, (55), 17 states have call successors, (55) [2021-12-21 20:48:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2021-12-21 20:48:55,582 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 397 [2021-12-21 20:48:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:55,582 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2021-12-21 20:48:55,582 INFO L471 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) [2021-12-21 20:48:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2021-12-21 20:48:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2021-12-21 20:48:55,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:55,591 INFO L514 BasicCegarLoop]: trace histogram [127, 123, 103, 64, 64, 64, 64, 62, 62, 62, 62, 62, 61, 61, 60, 60, 39, 24, 1, 1, 1, 1] [2021-12-21 20:48:55,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:55,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:55,809 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:48:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1943526731, now seen corresponding path program 12 times [2021-12-21 20:48:55,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101132723] [2021-12-21 20:48:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:55,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-12-21 20:48:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 828 [2021-12-21 20:48:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 55303 backedges. 2734 proven. 9180 refuted. 0 times theorem prover too weak. 43389 trivial. 0 not checked. [2021-12-21 20:48:56,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101132723] [2021-12-21 20:48:56,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101132723] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576091384] [2021-12-21 20:48:56,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 20:48:56,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:56,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:56,940 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:56,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 20:48:57,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2021-12-21 20:48:57,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:57,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 20:48:57,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55303 backedges. 28420 proven. 4291 refuted. 0 times theorem prover too weak. 22592 trivial. 0 not checked. [2021-12-21 20:48:58,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 55303 backedges. 4070 proven. 8972 refuted. 0 times theorem prover too weak. 42261 trivial. 0 not checked. [2021-12-21 20:49:01,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576091384] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:01,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:01,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 31] total 46 [2021-12-21 20:49:01,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808774599] [2021-12-21 20:49:01,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:01,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-21 20:49:01,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-21 20:49:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2021-12-21 20:49:01,760 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 46 states, 46 states have (on average 5.456521739130435) internal successors, (251), 46 states have internal predecessors, (251), 39 states have call successors, (49), 5 states have call predecessors, (49), 16 states have return successors, (63), 29 states have call predecessors, (63), 36 states have call successors, (63) [2021-12-21 20:49:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:02,577 INFO L93 Difference]: Finished difference Result 386 states and 580 transitions. [2021-12-21 20:49:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-21 20:49:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.456521739130435) internal successors, (251), 46 states have internal predecessors, (251), 39 states have call successors, (49), 5 states have call predecessors, (49), 16 states have return successors, (63), 29 states have call predecessors, (63), 36 states have call successors, (63) Word has length 1228 [2021-12-21 20:49:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:02,580 INFO L225 Difference]: With dead ends: 386 [2021-12-21 20:49:02,580 INFO L226 Difference]: Without dead ends: 247 [2021-12-21 20:49:02,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2772 GetRequests, 2686 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1714, Invalid=5596, Unknown=0, NotChecked=0, Total=7310 [2021-12-21 20:49:02,583 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 832 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:02,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 222 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:49:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-21 20:49:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 218. [2021-12-21 20:49:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 177 states have (on average 1.03954802259887) internal successors, (184), 172 states have internal predecessors, (184), 28 states have call successors, (28), 22 states have call predecessors, (28), 12 states have return successors, (84), 23 states have call predecessors, (84), 27 states have call successors, (84) [2021-12-21 20:49:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 296 transitions. [2021-12-21 20:49:02,593 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 296 transitions. Word has length 1228 [2021-12-21 20:49:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:02,594 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 296 transitions. [2021-12-21 20:49:02,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.456521739130435) internal successors, (251), 46 states have internal predecessors, (251), 39 states have call successors, (49), 5 states have call predecessors, (49), 16 states have return successors, (63), 29 states have call predecessors, (63), 36 states have call successors, (63) [2021-12-21 20:49:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 296 transitions. [2021-12-21 20:49:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2021-12-21 20:49:02,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:02,599 INFO L514 BasicCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 40, 40, 26, 16, 1, 1, 1, 1] [2021-12-21 20:49:02,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-21 20:49:02,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:02,808 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:49:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -420615276, now seen corresponding path program 13 times [2021-12-21 20:49:02,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294860009] [2021-12-21 20:49:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:02,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:49:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:49:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2021-12-21 20:49:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2384 proven. 4185 refuted. 0 times theorem prover too weak. 17606 trivial. 0 not checked. [2021-12-21 20:49:03,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294860009] [2021-12-21 20:49:03,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294860009] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556268134] [2021-12-21 20:49:03,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-21 20:49:03,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:03,569 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:03,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 20:49:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:49:03,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 12343 proven. 2667 refuted. 0 times theorem prover too weak. 9165 trivial. 0 not checked. [2021-12-21 20:49:04,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2261 proven. 5308 refuted. 0 times theorem prover too weak. 16606 trivial. 0 not checked. [2021-12-21 20:49:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556268134] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:07,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:07,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 27] total 39 [2021-12-21 20:49:07,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832560564] [2021-12-21 20:49:07,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:07,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-21 20:49:07,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-21 20:49:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2021-12-21 20:49:07,784 INFO L87 Difference]: Start difference. First operand 218 states and 296 transitions. Second operand has 39 states, 39 states have (on average 5.410256410256411) internal successors, (211), 39 states have internal predecessors, (211), 34 states have call successors, (40), 2 states have call predecessors, (40), 14 states have return successors, (56), 22 states have call predecessors, (56), 34 states have call successors, (56) [2021-12-21 20:49:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:08,267 INFO L93 Difference]: Finished difference Result 438 states and 619 transitions. [2021-12-21 20:49:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 20:49:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.410256410256411) internal successors, (211), 39 states have internal predecessors, (211), 34 states have call successors, (40), 2 states have call predecessors, (40), 14 states have return successors, (56), 22 states have call predecessors, (56), 34 states have call successors, (56) Word has length 815 [2021-12-21 20:49:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:08,271 INFO L225 Difference]: With dead ends: 438 [2021-12-21 20:49:08,271 INFO L226 Difference]: Without dead ends: 225 [2021-12-21 20:49:08,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1828 GetRequests, 1777 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=662, Invalid=1888, Unknown=0, NotChecked=0, Total=2550 [2021-12-21 20:49:08,274 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 452 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:08,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 292 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:49:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-21 20:49:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 189. [2021-12-21 20:49:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 150 states have internal predecessors, (158), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (63), 18 states have call predecessors, (63), 24 states have call successors, (63) [2021-12-21 20:49:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 246 transitions. [2021-12-21 20:49:08,284 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 246 transitions. Word has length 815 [2021-12-21 20:49:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:08,285 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 246 transitions. [2021-12-21 20:49:08,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.410256410256411) internal successors, (211), 39 states have internal predecessors, (211), 34 states have call successors, (40), 2 states have call predecessors, (40), 14 states have return successors, (56), 22 states have call predecessors, (56), 34 states have call successors, (56) [2021-12-21 20:49:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 246 transitions. [2021-12-21 20:49:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2021-12-21 20:49:08,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:08,290 INFO L514 BasicCegarLoop]: trace histogram [93, 92, 75, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 29, 18, 1, 1, 1, 1] [2021-12-21 20:49:08,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:08,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:08,518 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:49:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1417969372, now seen corresponding path program 14 times [2021-12-21 20:49:08,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:08,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077868274] [2021-12-21 20:49:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:08,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 20:49:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:49:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:49:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2021-12-21 20:49:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30008 backedges. 3898 proven. 4351 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2021-12-21 20:49:09,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077868274] [2021-12-21 20:49:09,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077868274] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74021156] [2021-12-21 20:49:09,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:49:09,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:09,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:09,355 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:09,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 20:49:09,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:49:09,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:09,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 20:49:09,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30008 backedges. 3735 proven. 5527 refuted. 0 times theorem prover too weak. 20746 trivial. 0 not checked. [2021-12-21 20:49:10,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:49:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30008 backedges. 3735 proven. 5699 refuted. 0 times theorem prover too weak. 20574 trivial. 0 not checked. [2021-12-21 20:49:14,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74021156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:49:14,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:49:14,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 31] total 45 [2021-12-21 20:49:14,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377775102] [2021-12-21 20:49:14,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:49:14,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-21 20:49:14,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-21 20:49:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2021-12-21 20:49:14,018 INFO L87 Difference]: Start difference. First operand 189 states and 246 transitions. Second operand has 45 states, 45 states have (on average 5.066666666666666) internal successors, (228), 45 states have internal predecessors, (228), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) [2021-12-21 20:49:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:14,633 INFO L93 Difference]: Finished difference Result 398 states and 537 transitions. [2021-12-21 20:49:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 20:49:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.066666666666666) internal successors, (228), 45 states have internal predecessors, (228), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) Word has length 907 [2021-12-21 20:49:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:14,636 INFO L225 Difference]: With dead ends: 398 [2021-12-21 20:49:14,636 INFO L226 Difference]: Without dead ends: 214 [2021-12-21 20:49:14,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2037 GetRequests, 1978 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=869, Invalid=2553, Unknown=0, NotChecked=0, Total=3422 [2021-12-21 20:49:14,638 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 419 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:14,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 384 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:49:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-21 20:49:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2021-12-21 20:49:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 132 states have internal predecessors, (136), 22 states have call successors, (22), 16 states have call predecessors, (22), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2021-12-21 20:49:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2021-12-21 20:49:14,649 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 907 [2021-12-21 20:49:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:14,649 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2021-12-21 20:49:14,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.066666666666666) internal successors, (228), 45 states have internal predecessors, (228), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) [2021-12-21 20:49:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2021-12-21 20:49:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2021-12-21 20:49:14,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:14,657 INFO L514 BasicCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2021-12-21 20:49:14,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 20:49:14,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:14,871 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:49:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1548695715, now seen corresponding path program 15 times [2021-12-21 20:49:14,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:14,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785849889] [2021-12-21 20:49:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:14,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:49:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:49:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2021-12-21 20:49:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:49:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:49:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:49:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:49:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:49:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:49:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:49:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2021-12-21 20:49:16,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:16,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785849889] [2021-12-21 20:49:16,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785849889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:49:16,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127236577] [2021-12-21 20:49:16,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:49:16,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:49:16,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:16,065 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:49:16,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 20:49:16,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-12-21 20:49:16,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:49:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 217 conjunts are in the unsatisfiable core [2021-12-21 20:49:16,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:49:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2021-12-21 20:49:18,291 INFO L328 TraceCheckSpWp]: Computing backward predicates...