./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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/Fibonacci01-1.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 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:45:42,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:45:42,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:45:42,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:45:42,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:45:42,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:45:42,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:45:42,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:45:42,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:45:42,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:45:42,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:45:42,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:45:42,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:45:42,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:45:42,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:45:42,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:45:42,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:45:42,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:45:42,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:45:42,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:45:42,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:45:42,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:45:42,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:45:42,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:45:42,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:45:42,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:45:42,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:45:42,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:45:42,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:45:42,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:45:42,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:45:42,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:45:42,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:45:42,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:45:42,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:45:42,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:45:42,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:45:42,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:45:42,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:45:42,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:45:42,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:45:42,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-28 08:45:42,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:45:42,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:45:42,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:45:42,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:45:42,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:45:42,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:45:42,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:45:42,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:45:42,237 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:45:42,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:45:42,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 08:45:42,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:45:42,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:45:42,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 08:45:42,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:45:42,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:45:42,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:45:42,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:45:42,239 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:45:42,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 08:45:42,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:45:42,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:45:42,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:45:42,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:45:42,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:45:42,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:45:42,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:45:42,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:45:42,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:45:42,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:45:42,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:45:42,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:45:42,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:45:42,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 [2021-12-28 08:45:42,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:45:42,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:45:42,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:45:42,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:45:42,582 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:45:42,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-12-28 08:45:42,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d524c235/fbfb444e09514b90ae7332866597e843/FLAGef3ed126f [2021-12-28 08:45:43,088 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:45:43,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-12-28 08:45:43,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d524c235/fbfb444e09514b90ae7332866597e843/FLAGef3ed126f [2021-12-28 08:45:43,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d524c235/fbfb444e09514b90ae7332866597e843 [2021-12-28 08:45:43,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:45:43,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:45:43,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:45:43,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:45:43,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:45:43,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f218b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43, skipping insertion in model container [2021-12-28 08:45:43,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:45:43,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:45:43,645 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/Fibonacci01-1.c[804,817] [2021-12-28 08:45:43,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:45:43,654 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:45:43,672 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/Fibonacci01-1.c[804,817] [2021-12-28 08:45:43,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:45:43,692 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:45:43,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43 WrapperNode [2021-12-28 08:45:43,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:45:43,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:45:43,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:45:43,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:45:43,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,721 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-12-28 08:45:43,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:45:43,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:45:43,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:45:43,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:45:43,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:45:43,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:45:43,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:45:43,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:45:43,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (1/1) ... [2021-12-28 08:45:43,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:45:43,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:43,788 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) [2021-12-28 08:45:43,790 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 [2021-12-28 08:45:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-12-28 08:45:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-12-28 08:45:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 08:45:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:45:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:45:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 08:45:43,867 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:45:43,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:45:44,019 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:45:44,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:45:44,039 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 08:45:44,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:45:44 BoogieIcfgContainer [2021-12-28 08:45:44,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:45:44,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:45:44,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:45:44,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:45:44,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:45:43" (1/3) ... [2021-12-28 08:45:44,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5bc7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:45:44, skipping insertion in model container [2021-12-28 08:45:44,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:45:43" (2/3) ... [2021-12-28 08:45:44,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5bc7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:45:44, skipping insertion in model container [2021-12-28 08:45:44,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:45:44" (3/3) ... [2021-12-28 08:45:44,048 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-12-28 08:45:44,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:45:44,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-28 08:45:44,103 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:45:44,118 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 [2021-12-28 08:45:44,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-28 08:45:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 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) [2021-12-28 08:45:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 08:45:44,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:44,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:44,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:44,155 INFO L85 PathProgramCache]: Analyzing trace with hash 630876797, now seen corresponding path program 1 times [2021-12-28 08:45:44,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:44,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469499000] [2021-12-28 08:45:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:44,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:45:44,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:44,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469499000] [2021-12-28 08:45:44,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469499000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:44,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:44,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:45:44,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478056901] [2021-12-28 08:45:44,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:44,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:45:44,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:45:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:45:44,423 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:45:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:44,527 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-12-28 08:45:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:45:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 08:45:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:44,535 INFO L225 Difference]: With dead ends: 41 [2021-12-28 08:45:44,536 INFO L226 Difference]: Without dead ends: 27 [2021-12-28 08:45:44,538 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 [2021-12-28 08:45:44,541 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:44,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 49 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-28 08:45:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-28 08:45:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 22 states have internal predecessors, (24), 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) [2021-12-28 08:45:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-28 08:45:44,571 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 8 [2021-12-28 08:45:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:44,572 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-28 08:45:44,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:45:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-28 08:45:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:45:44,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:44,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:44,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:45:44,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1917655731, now seen corresponding path program 1 times [2021-12-28 08:45:44,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465164992] [2021-12-28 08:45:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:44,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:45:44,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:44,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465164992] [2021-12-28 08:45:44,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465164992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:44,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:44,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:45:44,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128170213] [2021-12-28 08:45:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:44,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:45:44,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:45:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:45:44,606 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-28 08:45:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:44,636 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-12-28 08:45:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:45:44,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2021-12-28 08:45:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:44,638 INFO L225 Difference]: With dead ends: 29 [2021-12-28 08:45:44,639 INFO L226 Difference]: Without dead ends: 27 [2021-12-28 08:45:44,639 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 [2021-12-28 08:45:44,640 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 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 [2021-12-28 08:45:44,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-28 08:45:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-28 08:45:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-12-28 08:45:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-28 08:45:44,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2021-12-28 08:45:44,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:44,649 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-28 08:45:44,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-28 08:45:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-28 08:45:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:45:44,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:44,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:44,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:45:44,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:44,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash -337751957, now seen corresponding path program 1 times [2021-12-28 08:45:44,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:44,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410469651] [2021-12-28 08:45:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:44,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 08:45:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:45:44,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:44,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410469651] [2021-12-28 08:45:44,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410469651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:44,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:44,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:45:44,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853377210] [2021-12-28 08:45:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:44,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:45:44,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:45:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:45:44,696 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 08:45:44,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:44,705 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-28 08:45:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:45:44,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-28 08:45:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:44,706 INFO L225 Difference]: With dead ends: 25 [2021-12-28 08:45:44,706 INFO L226 Difference]: Without dead ends: 21 [2021-12-28 08:45:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:45:44,708 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:44,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-28 08:45:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-28 08:45:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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) [2021-12-28 08:45:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-28 08:45:44,713 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-12-28 08:45:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:44,714 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-28 08:45:44,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 08:45:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-28 08:45:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 08:45:44,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:44,715 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:44,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:45:44,716 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -332002831, now seen corresponding path program 1 times [2021-12-28 08:45:44,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:44,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644385022] [2021-12-28 08:45:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:44,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 08:45:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 08:45:44,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644385022] [2021-12-28 08:45:44,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644385022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:44,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:44,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:45:44,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392610420] [2021-12-28 08:45:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:44,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:45:44,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:45:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:45:44,806 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 08:45:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:44,851 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-12-28 08:45:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:45:44,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-28 08:45:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:44,853 INFO L225 Difference]: With dead ends: 37 [2021-12-28 08:45:44,853 INFO L226 Difference]: Without dead ends: 35 [2021-12-28 08:45:44,854 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 [2021-12-28 08:45:44,855 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 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 [2021-12-28 08:45:44,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-28 08:45:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-12-28 08:45:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-12-28 08:45:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-12-28 08:45:44,863 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2021-12-28 08:45:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:44,864 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-28 08:45:44,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 08:45:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-12-28 08:45:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 08:45:44,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:44,876 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:44,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:45:44,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1690949841, now seen corresponding path program 1 times [2021-12-28 08:45:44,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:44,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811059599] [2021-12-28 08:45:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:44,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 08:45:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 08:45:45,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:45,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811059599] [2021-12-28 08:45:45,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811059599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:45,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194544077] [2021-12-28 08:45:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:45,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:45,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:45,034 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) [2021-12-28 08:45:45,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:45:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 08:45:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 08:45:45,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 08:45:45,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194544077] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:45,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:45,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-12-28 08:45:45,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871553348] [2021-12-28 08:45:45,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:45,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 08:45:45,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 08:45:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-28 08:45:45,422 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-12-28 08:45:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:45,688 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2021-12-28 08:45:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 08:45:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 31 [2021-12-28 08:45:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:45,697 INFO L225 Difference]: With dead ends: 91 [2021-12-28 08:45:45,697 INFO L226 Difference]: Without dead ends: 65 [2021-12-28 08:45:45,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-12-28 08:45:45,700 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:45,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 101 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-28 08:45:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2021-12-28 08:45:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 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) [2021-12-28 08:45:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-12-28 08:45:45,712 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2021-12-28 08:45:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:45,712 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-12-28 08:45:45,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2021-12-28 08:45:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-12-28 08:45:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 08:45:45,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:45,714 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] [2021-12-28 08:45:45,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:45,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:45,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1550339203, now seen corresponding path program 2 times [2021-12-28 08:45:45,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:45,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174108401] [2021-12-28 08:45:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:45,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 08:45:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:45:46,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:46,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174108401] [2021-12-28 08:45:46,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174108401] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:46,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379392878] [2021-12-28 08:45:46,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:45:46,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:46,010 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) [2021-12-28 08:45:46,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 08:45:46,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:45:46,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:46,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:45:46,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:45:46,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:45:46,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379392878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:46,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:45:46,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-12-28 08:45:46,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274257740] [2021-12-28 08:45:46,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:46,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:45:46,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:45:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 08:45:46,115 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-28 08:45:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:46,133 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-12-28 08:45:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:45:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 25 [2021-12-28 08:45:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:46,135 INFO L225 Difference]: With dead ends: 61 [2021-12-28 08:45:46,136 INFO L226 Difference]: Without dead ends: 60 [2021-12-28 08:45:46,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 08:45:46,137 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:46,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-28 08:45:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-12-28 08:45:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 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) [2021-12-28 08:45:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2021-12-28 08:45:46,148 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2021-12-28 08:45:46,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:46,148 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2021-12-28 08:45:46,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-28 08:45:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2021-12-28 08:45:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 08:45:46,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:46,150 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, 1] [2021-12-28 08:45:46,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:46,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-28 08:45:46,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash -815874983, now seen corresponding path program 1 times [2021-12-28 08:45:46,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:46,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132047673] [2021-12-28 08:45:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:46,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 08:45:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:45:46,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:46,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132047673] [2021-12-28 08:45:46,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132047673] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:46,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715635694] [2021-12-28 08:45:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:46,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:46,445 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) [2021-12-28 08:45:46,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 08:45:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:46,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:45:46,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:45:46,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:45:46,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715635694] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:46,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:46,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2021-12-28 08:45:46,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978222256] [2021-12-28 08:45:46,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:46,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 08:45:46,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 08:45:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-28 08:45:46,630 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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) [2021-12-28 08:45:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:46,715 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-12-28 08:45:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 08:45:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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 26 [2021-12-28 08:45:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:46,724 INFO L225 Difference]: With dead ends: 70 [2021-12-28 08:45:46,724 INFO L226 Difference]: Without dead ends: 69 [2021-12-28 08:45:46,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-28 08:45:46,725 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:46,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 147 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-28 08:45:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-12-28 08:45:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 52 states have internal predecessors, (56), 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) [2021-12-28 08:45:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-12-28 08:45:46,765 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 26 [2021-12-28 08:45:46,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:46,766 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-12-28 08:45:46,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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) [2021-12-28 08:45:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-12-28 08:45:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 08:45:46,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:46,768 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:45:46,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 08:45:46,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:46,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash 631942748, now seen corresponding path program 1 times [2021-12-28 08:45:46,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:46,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075821358] [2021-12-28 08:45:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:46,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 08:45:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-28 08:45:47,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:47,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075821358] [2021-12-28 08:45:47,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075821358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:47,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871147005] [2021-12-28 08:45:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:47,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:47,089 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) [2021-12-28 08:45:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 08:45:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 08:45:47,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-28 08:45:47,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-28 08:45:47,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871147005] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:47,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:47,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2021-12-28 08:45:47,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473156475] [2021-12-28 08:45:47,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:47,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 08:45:47,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 08:45:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-12-28 08:45:47,460 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-12-28 08:45:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:47,599 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2021-12-28 08:45:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 08:45:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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 45 [2021-12-28 08:45:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:47,607 INFO L225 Difference]: With dead ends: 138 [2021-12-28 08:45:47,608 INFO L226 Difference]: Without dead ends: 137 [2021-12-28 08:45:47,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-28 08:45:47,611 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:47,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 130 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-28 08:45:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-12-28 08:45:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 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) [2021-12-28 08:45:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-28 08:45:47,654 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 45 [2021-12-28 08:45:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:47,656 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-28 08:45:47,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-12-28 08:45:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-28 08:45:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 08:45:47,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:47,663 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, 1] [2021-12-28 08:45:47,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:47,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:47,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1516546273, now seen corresponding path program 1 times [2021-12-28 08:45:47,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:47,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624748958] [2021-12-28 08:45:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:47,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 08:45:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 08:45:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 08:45:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-28 08:45:47,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:47,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624748958] [2021-12-28 08:45:47,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624748958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:47,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:47,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:45:47,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812825310] [2021-12-28 08:45:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:47,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:45:47,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:45:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:45:47,966 INFO L87 Difference]: Start difference. First operand 99 states and 160 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) [2021-12-28 08:45:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:47,994 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2021-12-28 08:45:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:45:47,995 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 70 [2021-12-28 08:45:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:47,997 INFO L225 Difference]: With dead ends: 112 [2021-12-28 08:45:47,997 INFO L226 Difference]: Without dead ends: 111 [2021-12-28 08:45:47,997 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 [2021-12-28 08:45:47,998 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 61 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 [2021-12-28 08:45:47,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 61 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-28 08:45:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-12-28 08:45:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 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) [2021-12-28 08:45:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-28 08:45:48,014 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 70 [2021-12-28 08:45:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:48,014 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-28 08:45:48,014 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) [2021-12-28 08:45:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-28 08:45:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-28 08:45:48,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:48,017 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-28 08:45:48,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 08:45:48,017 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -514534523, now seen corresponding path program 2 times [2021-12-28 08:45:48,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:48,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671662286] [2021-12-28 08:45:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:48,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 08:45:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-28 08:45:48,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671662286] [2021-12-28 08:45:48,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671662286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:45:48,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:45:48,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:45:48,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262178543] [2021-12-28 08:45:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:45:48,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:45:48,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:45:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:45:48,082 INFO L87 Difference]: Start difference. First operand 99 states and 160 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-12-28 08:45:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:48,100 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2021-12-28 08:45:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:45:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 71 [2021-12-28 08:45:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:48,102 INFO L225 Difference]: With dead ends: 112 [2021-12-28 08:45:48,102 INFO L226 Difference]: Without dead ends: 111 [2021-12-28 08:45:48,103 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 [2021-12-28 08:45:48,103 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:48,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-28 08:45:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-12-28 08:45:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 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) [2021-12-28 08:45:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-28 08:45:48,115 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 71 [2021-12-28 08:45:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:48,115 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-28 08:45:48,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-12-28 08:45:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-28 08:45:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 08:45:48,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:48,119 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, 1] [2021-12-28 08:45:48,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 08:45:48,119 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash -558108924, now seen corresponding path program 2 times [2021-12-28 08:45:48,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:48,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225100746] [2021-12-28 08:45:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:48,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 08:45:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 61 proven. 158 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-28 08:45:48,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:48,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225100746] [2021-12-28 08:45:48,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225100746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:48,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503117903] [2021-12-28 08:45:48,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:45:48,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:48,319 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) [2021-12-28 08:45:48,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 08:45:48,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:45:48,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:48,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 08:45:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 206 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-28 08:45:48,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 209 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-28 08:45:49,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503117903] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:49,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:49,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2021-12-28 08:45:49,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282280593] [2021-12-28 08:45:49,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:49,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 08:45:49,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 08:45:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-12-28 08:45:49,081 INFO L87 Difference]: Start difference. First operand 99 states and 160 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2021-12-28 08:45:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:49,208 INFO L93 Difference]: Finished difference Result 178 states and 303 transitions. [2021-12-28 08:45:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 08:45:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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 123 [2021-12-28 08:45:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:49,210 INFO L225 Difference]: With dead ends: 178 [2021-12-28 08:45:49,210 INFO L226 Difference]: Without dead ends: 83 [2021-12-28 08:45:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-12-28 08:45:49,214 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 102 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:49,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 69 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-28 08:45:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2021-12-28 08:45:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 53 states have internal predecessors, (61), 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) [2021-12-28 08:45:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2021-12-28 08:45:49,232 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 123 [2021-12-28 08:45:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:49,233 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2021-12-28 08:45:49,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2021-12-28 08:45:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2021-12-28 08:45:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-28 08:45:49,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:49,241 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 1, 1, 1, 1, 1] [2021-12-28 08:45:49,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:49,455 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,SelfDestructingSolverStorable10 [2021-12-28 08:45:49,456 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1387210375, now seen corresponding path program 3 times [2021-12-28 08:45:49,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996383359] [2021-12-28 08:45:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:49,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 08:45:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 08:45:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 94 proven. 279 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2021-12-28 08:45:49,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:49,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996383359] [2021-12-28 08:45:49,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996383359] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:49,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989034133] [2021-12-28 08:45:49,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:45:49,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:49,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:49,647 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) [2021-12-28 08:45:49,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 08:45:49,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-28 08:45:49,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:49,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 08:45:49,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 310 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-12-28 08:45:50,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 310 proven. 22 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-12-28 08:45:50,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989034133] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:50,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:50,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2021-12-28 08:45:50,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334138912] [2021-12-28 08:45:50,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:50,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 08:45:50,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:50,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 08:45:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-28 08:45:50,541 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-12-28 08:45:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:50,673 INFO L93 Difference]: Finished difference Result 125 states and 175 transitions. [2021-12-28 08:45:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 08:45:50,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 176 [2021-12-28 08:45:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:50,675 INFO L225 Difference]: With dead ends: 125 [2021-12-28 08:45:50,675 INFO L226 Difference]: Without dead ends: 59 [2021-12-28 08:45:50,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 376 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-12-28 08:45:50,676 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:50,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 86 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-28 08:45:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-28 08:45:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 45 states have internal predecessors, (50), 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) [2021-12-28 08:45:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2021-12-28 08:45:50,681 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 176 [2021-12-28 08:45:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:50,682 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2021-12-28 08:45:50,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-12-28 08:45:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2021-12-28 08:45:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-28 08:45:50,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:50,684 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 3, 1, 1, 1, 1, 1] [2021-12-28 08:45:50,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:50,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:50,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash -823240014, now seen corresponding path program 4 times [2021-12-28 08:45:50,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848456096] [2021-12-28 08:45:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:50,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 08:45:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 08:45:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 100 proven. 343 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-12-28 08:45:51,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848456096] [2021-12-28 08:45:51,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848456096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848855290] [2021-12-28 08:45:51,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:45:51,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:51,103 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) [2021-12-28 08:45:51,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 08:45:51,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:45:51,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 08:45:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 463 proven. 189 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-28 08:45:51,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-12-28 08:45:52,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848855290] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:52,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:52,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 14] total 21 [2021-12-28 08:45:52,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363593694] [2021-12-28 08:45:52,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:52,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 08:45:52,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 08:45:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-12-28 08:45:52,040 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 17 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-28 08:45:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:52,214 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2021-12-28 08:45:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 08:45:52,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 17 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 16 states have call successors, (24) Word has length 158 [2021-12-28 08:45:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:52,216 INFO L225 Difference]: With dead ends: 128 [2021-12-28 08:45:52,216 INFO L226 Difference]: Without dead ends: 75 [2021-12-28 08:45:52,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=525, Unknown=0, NotChecked=0, Total=756 [2021-12-28 08:45:52,218 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 238 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:52,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 85 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-28 08:45:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-12-28 08:45:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 states have internal predecessors, (55), 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) [2021-12-28 08:45:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-12-28 08:45:52,228 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 158 [2021-12-28 08:45:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:52,228 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-12-28 08:45:52,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 17 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 10 states have call predecessors, (24), 16 states have call successors, (24) [2021-12-28 08:45:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-12-28 08:45:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-28 08:45:52,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:52,229 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, 1] [2021-12-28 08:45:52,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:52,448 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1596262010, now seen corresponding path program 3 times [2021-12-28 08:45:52,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:52,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083806994] [2021-12-28 08:45:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:52,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 08:45:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-28 08:45:52,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:52,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083806994] [2021-12-28 08:45:52,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083806994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:52,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588743013] [2021-12-28 08:45:52,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:45:52,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:52,567 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) [2021-12-28 08:45:52,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 08:45:52,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-28 08:45:52,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:52,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 08:45:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-28 08:45:52,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-28 08:45:53,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588743013] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:53,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:53,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2021-12-28 08:45:53,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585933145] [2021-12-28 08:45:53,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:53,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 08:45:53,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 08:45:53,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-28 08:45:53,009 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-12-28 08:45:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:53,072 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-12-28 08:45:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 08:45:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 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 91 [2021-12-28 08:45:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:53,074 INFO L225 Difference]: With dead ends: 65 [2021-12-28 08:45:53,074 INFO L226 Difference]: Without dead ends: 64 [2021-12-28 08:45:53,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 08:45:53,075 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:53,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:45:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-28 08:45:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-28 08:45:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0588235294117647) 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) [2021-12-28 08:45:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-28 08:45:53,079 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 91 [2021-12-28 08:45:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:53,080 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-28 08:45:53,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 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) [2021-12-28 08:45:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-28 08:45:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 08:45:53,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:53,082 INFO L514 BasicCegarLoop]: trace histogram [16, 14, 13, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1, 1] [2021-12-28 08:45:53,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:53,303 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,SelfDestructingSolverStorable13 [2021-12-28 08:45:53,304 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash 534661593, now seen corresponding path program 5 times [2021-12-28 08:45:53,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:53,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163850133] [2021-12-28 08:45:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:53,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:45:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 08:45:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-12-28 08:45:53,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:53,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163850133] [2021-12-28 08:45:53,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163850133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:53,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745735484] [2021-12-28 08:45:53,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:45:53,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:53,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:53,496 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) [2021-12-28 08:45:53,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 08:45:53,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-28 08:45:53,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:53,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-28 08:45:53,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-12-28 08:45:53,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-12-28 08:45:54,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745735484] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:54,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:54,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2021-12-28 08:45:54,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467628211] [2021-12-28 08:45:54,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:54,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 08:45:54,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 08:45:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2021-12-28 08:45:54,874 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 27 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 27 states have internal predecessors, (69), 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) [2021-12-28 08:45:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:55,098 INFO L93 Difference]: Finished difference Result 129 states and 177 transitions. [2021-12-28 08:45:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-28 08:45:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 27 states have internal predecessors, (69), 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 149 [2021-12-28 08:45:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:55,100 INFO L225 Difference]: With dead ends: 129 [2021-12-28 08:45:55,100 INFO L226 Difference]: Without dead ends: 128 [2021-12-28 08:45:55,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=913, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 08:45:55,101 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 51 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:55,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 292 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:45:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-28 08:45:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2021-12-28 08:45:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 77 states have internal predecessors, (82), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2021-12-28 08:45:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 140 transitions. [2021-12-28 08:45:55,115 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 140 transitions. Word has length 149 [2021-12-28 08:45:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:55,116 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 140 transitions. [2021-12-28 08:45:55,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 27 states have internal predecessors, (69), 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) [2021-12-28 08:45:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 140 transitions. [2021-12-28 08:45:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-12-28 08:45:55,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:55,123 INFO L514 BasicCegarLoop]: trace histogram [45, 43, 36, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 20, 20, 14, 9, 1, 1, 1, 1, 1] [2021-12-28 08:45:55,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:55,342 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,SelfDestructingSolverStorable14 [2021-12-28 08:45:55,343 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1483249832, now seen corresponding path program 6 times [2021-12-28 08:45:55,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:55,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882168486] [2021-12-28 08:45:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:55,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 08:45:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-28 08:45:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:45:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:45:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6643 backedges. 347 proven. 1495 refuted. 0 times theorem prover too weak. 4801 trivial. 0 not checked. [2021-12-28 08:45:55,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:55,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882168486] [2021-12-28 08:45:55,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882168486] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:55,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126208629] [2021-12-28 08:45:55,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:45:55,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:55,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:55,830 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) [2021-12-28 08:45:55,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 08:45:55,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-12-28 08:45:55,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:45:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-28 08:45:55,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6643 backedges. 3624 proven. 337 refuted. 0 times theorem prover too weak. 2682 trivial. 0 not checked. [2021-12-28 08:45:56,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:45:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6643 backedges. 362 proven. 1505 refuted. 0 times theorem prover too weak. 4776 trivial. 0 not checked. [2021-12-28 08:45:57,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126208629] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:45:57,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:45:57,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 16] total 29 [2021-12-28 08:45:57,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218217165] [2021-12-28 08:45:57,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:45:57,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-28 08:45:57,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:45:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-28 08:45:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2021-12-28 08:45:57,998 INFO L87 Difference]: Start difference. First operand 100 states and 140 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 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) [2021-12-28 08:45:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:45:58,310 INFO L93 Difference]: Finished difference Result 229 states and 355 transitions. [2021-12-28 08:45:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 08:45:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 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 432 [2021-12-28 08:45:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:45:58,313 INFO L225 Difference]: With dead ends: 229 [2021-12-28 08:45:58,313 INFO L226 Difference]: Without dead ends: 135 [2021-12-28 08:45:58,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 934 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2021-12-28 08:45:58,315 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 222 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:45:58,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 206 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:45:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-28 08:45:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 117. [2021-12-28 08:45:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 93 states have (on average 1.043010752688172) internal successors, (97), 90 states have internal predecessors, (97), 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) [2021-12-28 08:45:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 151 transitions. [2021-12-28 08:45:58,325 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 151 transitions. Word has length 432 [2021-12-28 08:45:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:45:58,325 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 151 transitions. [2021-12-28 08:45:58,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 28 states have internal predecessors, (147), 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) [2021-12-28 08:45:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 151 transitions. [2021-12-28 08:45:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-28 08:45:58,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:45:58,330 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, 1] [2021-12-28 08:45:58,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 08:45:58,547 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,SelfDestructingSolverStorable15 [2021-12-28 08:45:58,547 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:45:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:45:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash 649806195, now seen corresponding path program 7 times [2021-12-28 08:45:58,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:45:58,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110817942] [2021-12-28 08:45:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:45:58,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:45:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:45:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:45:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 08:45:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:45:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:45:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:45:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:45:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:45:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 497 proven. 998 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2021-12-28 08:45:58,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:45:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110817942] [2021-12-28 08:45:58,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110817942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:45:58,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262431925] [2021-12-28 08:45:58,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-28 08:45:58,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:45:58,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:45:58,967 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) [2021-12-28 08:45:58,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 08:45:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:45:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 08:45:59,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:45:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 555 proven. 1181 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2021-12-28 08:45:59,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 555 proven. 1253 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2021-12-28 08:46:01,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262431925] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:01,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:01,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 23] total 33 [2021-12-28 08:46:01,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389747160] [2021-12-28 08:46:01,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:01,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 08:46:01,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 08:46:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 08:46:01,175 INFO L87 Difference]: Start difference. First operand 117 states and 151 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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) [2021-12-28 08:46:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:01,663 INFO L93 Difference]: Finished difference Result 253 states and 374 transitions. [2021-12-28 08:46:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-28 08:46:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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 300 [2021-12-28 08:46:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:01,666 INFO L225 Difference]: With dead ends: 253 [2021-12-28 08:46:01,667 INFO L226 Difference]: Without dead ends: 142 [2021-12-28 08:46:01,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=646, Invalid=1804, Unknown=0, NotChecked=0, Total=2450 [2021-12-28 08:46:01,671 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 446 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:01,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 177 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 08:46:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-28 08:46:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2021-12-28 08:46:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 100 states have internal predecessors, (109), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (37), 17 states have call predecessors, (37), 14 states have call successors, (37) [2021-12-28 08:46:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2021-12-28 08:46:01,680 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 300 [2021-12-28 08:46:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:01,681 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2021-12-28 08:46:01,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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) [2021-12-28 08:46:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2021-12-28 08:46:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-28 08:46:01,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:01,683 INFO L514 BasicCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 10, 6, 1, 1, 1, 1, 1] [2021-12-28 08:46:01,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:01,895 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,SelfDestructingSolverStorable16 [2021-12-28 08:46:01,896 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:01,896 INFO L85 PathProgramCache]: Analyzing trace with hash -448813433, now seen corresponding path program 8 times [2021-12-28 08:46:01,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:01,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90488802] [2021-12-28 08:46:01,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:01,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:46:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-28 08:46:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 609 proven. 736 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2021-12-28 08:46:02,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90488802] [2021-12-28 08:46:02,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90488802] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317677182] [2021-12-28 08:46:02,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:46:02,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:02,261 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) [2021-12-28 08:46:02,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 08:46:02,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:46:02,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 08:46:02,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1849 proven. 484 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2021-12-28 08:46:02,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 538 proven. 1101 refuted. 0 times theorem prover too weak. 1629 trivial. 0 not checked. [2021-12-28 08:46:04,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317677182] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:04,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:04,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 27 [2021-12-28 08:46:04,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225785186] [2021-12-28 08:46:04,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:04,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 08:46:04,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 08:46:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-12-28 08:46:04,244 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand has 27 states, 27 states have (on average 5.62962962962963) internal successors, (152), 27 states have internal predecessors, (152), 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) [2021-12-28 08:46:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:04,539 INFO L93 Difference]: Finished difference Result 241 states and 314 transitions. [2021-12-28 08:46:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 08:46:04,543 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.62962962962963) internal successors, (152), 27 states have internal predecessors, (152), 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 306 [2021-12-28 08:46:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:04,544 INFO L225 Difference]: With dead ends: 241 [2021-12-28 08:46:04,545 INFO L226 Difference]: Without dead ends: 118 [2021-12-28 08:46:04,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 659 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 08:46:04,547 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:04,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 204 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:46:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-28 08:46:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-12-28 08:46:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 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) [2021-12-28 08:46:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-12-28 08:46:04,554 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 306 [2021-12-28 08:46:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:04,554 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-12-28 08:46:04,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.62962962962963) internal successors, (152), 27 states have internal predecessors, (152), 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) [2021-12-28 08:46:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-12-28 08:46:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-12-28 08:46:04,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:04,557 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, 1] [2021-12-28 08:46:04,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:04,771 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,SelfDestructingSolverStorable17 [2021-12-28 08:46:04,771 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -561951835, now seen corresponding path program 9 times [2021-12-28 08:46:04,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623942449] [2021-12-28 08:46:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:04,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:46:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-28 08:46:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1094 proven. 2322 refuted. 0 times theorem prover too weak. 5380 trivial. 0 not checked. [2021-12-28 08:46:05,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:05,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623942449] [2021-12-28 08:46:05,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623942449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:05,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203670921] [2021-12-28 08:46:05,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:46:05,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:05,415 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) [2021-12-28 08:46:05,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 08:46:05,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-12-28 08:46:05,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:05,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 08:46:05,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1713 proven. 1024 refuted. 0 times theorem prover too weak. 6059 trivial. 0 not checked. [2021-12-28 08:46:06,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8796 backedges. 1721 proven. 1063 refuted. 0 times theorem prover too weak. 6012 trivial. 0 not checked. [2021-12-28 08:46:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203670921] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:07,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:07,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 19] total 34 [2021-12-28 08:46:07,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824019820] [2021-12-28 08:46:07,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:07,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-28 08:46:07,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-28 08:46:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2021-12-28 08:46:07,789 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 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) [2021-12-28 08:46:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:08,291 INFO L93 Difference]: Finished difference Result 260 states and 338 transitions. [2021-12-28 08:46:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-28 08:46:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 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 496 [2021-12-28 08:46:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:08,294 INFO L225 Difference]: With dead ends: 260 [2021-12-28 08:46:08,294 INFO L226 Difference]: Without dead ends: 160 [2021-12-28 08:46:08,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1080 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=749, Invalid=2221, Unknown=0, NotChecked=0, Total=2970 [2021-12-28 08:46:08,296 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 399 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:08,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 165 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 08:46:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-28 08:46:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2021-12-28 08:46:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 107 states have internal predecessors, (115), 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) [2021-12-28 08:46:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2021-12-28 08:46:08,304 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 496 [2021-12-28 08:46:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:08,304 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2021-12-28 08:46:08,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 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) [2021-12-28 08:46:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2021-12-28 08:46:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-12-28 08:46:08,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:08,306 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, 1] [2021-12-28 08:46:08,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:08,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:08,531 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1744807443, now seen corresponding path program 10 times [2021-12-28 08:46:08,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656487345] [2021-12-28 08:46:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:08,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:46:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-28 08:46:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 951 proven. 816 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2021-12-28 08:46:08,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:08,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656487345] [2021-12-28 08:46:08,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656487345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:08,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709419343] [2021-12-28 08:46:08,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:46:08,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:08,932 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) [2021-12-28 08:46:08,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 08:46:09,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:46:09,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:09,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 08:46:09,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 840 proven. 1214 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-12-28 08:46:09,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4034 backedges. 840 proven. 1290 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2021-12-28 08:46:11,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709419343] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:11,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 23] total 33 [2021-12-28 08:46:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754051239] [2021-12-28 08:46:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:11,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 08:46:11,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 08:46:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 08:46:11,176 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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) [2021-12-28 08:46:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:11,506 INFO L93 Difference]: Finished difference Result 279 states and 364 transitions. [2021-12-28 08:46:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 08:46:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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 339 [2021-12-28 08:46:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:11,508 INFO L225 Difference]: With dead ends: 279 [2021-12-28 08:46:11,508 INFO L226 Difference]: Without dead ends: 149 [2021-12-28 08:46:11,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 730 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 08:46:11,510 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 165 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:11,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 229 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:46:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-28 08:46:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2021-12-28 08:46:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 100 states have (on average 1.03) internal successors, (103), 99 states have internal predecessors, (103), 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) [2021-12-28 08:46:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 154 transitions. [2021-12-28 08:46:11,518 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 154 transitions. Word has length 339 [2021-12-28 08:46:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:11,518 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 154 transitions. [2021-12-28 08:46:11,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 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) [2021-12-28 08:46:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 154 transitions. [2021-12-28 08:46:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-28 08:46:11,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:11,521 INFO L514 BasicCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1, 1] [2021-12-28 08:46:11,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:11,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:11,737 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1536889272, now seen corresponding path program 11 times [2021-12-28 08:46:11,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:11,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329304560] [2021-12-28 08:46:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:11,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:46:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-28 08:46:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2021-12-28 08:46:12,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:12,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329304560] [2021-12-28 08:46:12,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329304560] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:12,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648820665] [2021-12-28 08:46:12,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:46:12,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:12,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:12,320 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) [2021-12-28 08:46:12,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 08:46:12,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-12-28 08:46:12,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:12,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-28 08:46:12,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2021-12-28 08:46:13,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2021-12-28 08:46:17,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648820665] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:17,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:17,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2021-12-28 08:46:17,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943542579] [2021-12-28 08:46:17,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-28 08:46:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-28 08:46:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-12-28 08:46:17,828 INFO L87 Difference]: Start difference. First operand 125 states and 154 transitions. Second operand has 41 states, 40 states have (on average 2.575) internal successors, (103), 41 states have internal predecessors, (103), 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) [2021-12-28 08:46:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:17,976 INFO L93 Difference]: Finished difference Result 156 states and 206 transitions. [2021-12-28 08:46:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-28 08:46:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.575) internal successors, (103), 41 states have internal predecessors, (103), 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 404 [2021-12-28 08:46:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:17,979 INFO L225 Difference]: With dead ends: 156 [2021-12-28 08:46:17,979 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 08:46:17,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2021-12-28 08:46:17,981 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:17,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 239 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:46:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 08:46:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2021-12-28 08:46:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 114 states have internal predecessors, (119), 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) [2021-12-28 08:46:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2021-12-28 08:46:17,994 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 404 [2021-12-28 08:46:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:17,995 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2021-12-28 08:46:17,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.575) internal successors, (103), 41 states have internal predecessors, (103), 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) [2021-12-28 08:46:17,995 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2021-12-28 08:46:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2021-12-28 08:46:18,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:18,005 INFO L514 BasicCegarLoop]: trace histogram [128, 123, 104, 65, 65, 65, 65, 62, 62, 62, 62, 62, 61, 61, 60, 60, 39, 24, 1, 1, 1, 1, 1] [2021-12-28 08:46:18,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:18,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:18,215 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1743803212, now seen corresponding path program 12 times [2021-12-28 08:46:18,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:18,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397478348] [2021-12-28 08:46:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:18,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 08:46:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-12-28 08:46:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 835 [2021-12-28 08:46:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55852 backedges. 2080 proven. 8147 refuted. 0 times theorem prover too weak. 45625 trivial. 0 not checked. [2021-12-28 08:46:19,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397478348] [2021-12-28 08:46:19,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397478348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199961975] [2021-12-28 08:46:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:46:19,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:19,512 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) [2021-12-28 08:46:19,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-28 08:46:19,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2021-12-28 08:46:19,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 08:46:19,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 55852 backedges. 27477 proven. 4411 refuted. 0 times theorem prover too weak. 23964 trivial. 0 not checked. [2021-12-28 08:46:21,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 55852 backedges. 2948 proven. 8330 refuted. 0 times theorem prover too weak. 44574 trivial. 0 not checked. [2021-12-28 08:46:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199961975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:24,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:24,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 26] total 37 [2021-12-28 08:46:24,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461155898] [2021-12-28 08:46:24,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:24,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-28 08:46:24,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-28 08:46:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2021-12-28 08:46:24,426 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 31 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (47), 22 states have call predecessors, (47), 27 states have call successors, (47) [2021-12-28 08:46:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:24,874 INFO L93 Difference]: Finished difference Result 335 states and 487 transitions. [2021-12-28 08:46:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-28 08:46:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 31 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (47), 22 states have call predecessors, (47), 27 states have call successors, (47) Word has length 1235 [2021-12-28 08:46:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:24,877 INFO L225 Difference]: With dead ends: 335 [2021-12-28 08:46:24,877 INFO L226 Difference]: Without dead ends: 196 [2021-12-28 08:46:24,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2769 GetRequests, 2707 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1059, Invalid=2723, Unknown=0, NotChecked=0, Total=3782 [2021-12-28 08:46:24,880 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:24,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 162 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:46:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-28 08:46:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 183. [2021-12-28 08:46:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 144 states have internal predecessors, (153), 23 states have call successors, (23), 17 states have call predecessors, (23), 11 states have return successors, (64), 21 states have call predecessors, (64), 22 states have call successors, (64) [2021-12-28 08:46:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2021-12-28 08:46:24,892 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 1235 [2021-12-28 08:46:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:24,892 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2021-12-28 08:46:24,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 31 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (47), 22 states have call predecessors, (47), 27 states have call successors, (47) [2021-12-28 08:46:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2021-12-28 08:46:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2021-12-28 08:46:24,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:24,898 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, 1] [2021-12-28 08:46:24,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:25,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-28 08:46:25,120 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:25,120 INFO L85 PathProgramCache]: Analyzing trace with hash 842626985, now seen corresponding path program 13 times [2021-12-28 08:46:25,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:25,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300948844] [2021-12-28 08:46:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:25,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:46:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-28 08:46:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2021-12-28 08:46:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2384 proven. 4185 refuted. 0 times theorem prover too weak. 17606 trivial. 0 not checked. [2021-12-28 08:46:26,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300948844] [2021-12-28 08:46:26,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300948844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924194423] [2021-12-28 08:46:26,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-28 08:46:26,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:26,104 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) [2021-12-28 08:46:26,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-28 08:46:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:26,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 08:46:26,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 12343 proven. 2667 refuted. 0 times theorem prover too weak. 9165 trivial. 0 not checked. [2021-12-28 08:46:27,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:46:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2261 proven. 5308 refuted. 0 times theorem prover too weak. 16606 trivial. 0 not checked. [2021-12-28 08:46:30,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924194423] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:46:30,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:46:30,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 27] total 39 [2021-12-28 08:46:30,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817265480] [2021-12-28 08:46:30,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:46:30,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-28 08:46:30,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:46:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-28 08:46:30,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2021-12-28 08:46:30,748 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand has 39 states, 39 states have (on average 5.435897435897436) internal successors, (212), 39 states have internal predecessors, (212), 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) [2021-12-28 08:46:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:46:31,244 INFO L93 Difference]: Finished difference Result 361 states and 490 transitions. [2021-12-28 08:46:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-28 08:46:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.435897435897436) internal successors, (212), 39 states have internal predecessors, (212), 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 816 [2021-12-28 08:46:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:46:31,248 INFO L225 Difference]: With dead ends: 361 [2021-12-28 08:46:31,248 INFO L226 Difference]: Without dead ends: 184 [2021-12-28 08:46:31,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1830 GetRequests, 1779 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=662, Invalid=1888, Unknown=0, NotChecked=0, Total=2550 [2021-12-28 08:46:31,250 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 402 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 08:46:31,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 283 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 08:46:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-28 08:46:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 148. [2021-12-28 08:46:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 119 states have (on average 1.0252100840336134) internal successors, (122), 117 states have internal predecessors, (122), 19 states have call successors, (19), 14 states have call predecessors, (19), 9 states have return successors, (45), 16 states have call predecessors, (45), 18 states have call successors, (45) [2021-12-28 08:46:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-12-28 08:46:31,259 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 816 [2021-12-28 08:46:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:46:31,260 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-12-28 08:46:31,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.435897435897436) internal successors, (212), 39 states have internal predecessors, (212), 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) [2021-12-28 08:46:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-12-28 08:46:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2021-12-28 08:46:31,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:46:31,271 INFO L514 BasicCegarLoop]: trace histogram [136, 134, 110, 68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 66, 66, 42, 26, 1, 1, 1, 1, 1] [2021-12-28 08:46:31,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-28 08:46:31,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:31,488 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-28 08:46:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:46:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 722912015, now seen corresponding path program 14 times [2021-12-28 08:46:31,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:46:31,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516672854] [2021-12-28 08:46:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:46:31,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:46:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 08:46:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-28 08:46:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2021-12-28 08:46:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-28 08:46:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-28 08:46:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 08:46:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 08:46:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 08:46:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 08:46:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-28 08:46:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 08:46:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:46:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 64422 backedges. 4574 proven. 9979 refuted. 0 times theorem prover too weak. 49869 trivial. 0 not checked. [2021-12-28 08:46:33,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:46:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516672854] [2021-12-28 08:46:33,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516672854] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:46:33,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679088060] [2021-12-28 08:46:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:46:33,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:46:33,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:46:33,276 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) [2021-12-28 08:46:33,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-28 08:46:33,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:46:33,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:46:33,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-28 08:46:33,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:46:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 64422 backedges. 5217 proven. 10902 refuted. 0 times theorem prover too weak. 48303 trivial. 0 not checked. [2021-12-28 08:46:35,305 INFO L328 TraceCheckSpWp]: Computing backward predicates...