./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 ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/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-ff03de6 [2021-12-21 20:48:05,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:48:05,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:48:05,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:48:05,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:48:05,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:48:05,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:48:05,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:48:05,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:48:05,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:48:05,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:48:05,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:48:05,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:48:05,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:48:05,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:48:05,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:48:05,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:48:05,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:48:05,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:48:05,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:48:05,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:48:05,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:48:05,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:48:05,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:48:05,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:48:05,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:48:05,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:48:05,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:48:05,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:48:05,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:48:05,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:48:05,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:48:05,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:48:05,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:48:05,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:48:05,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:48:05,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:48:05,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:48:05,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:48:05,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:48:05,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:48:05,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:48:05,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:48:05,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:48:05,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:48:05,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:48:05,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:48:05,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:48:05,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:48:05,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:48:05,877 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:48:05,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:48:05,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:48:05,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:48:05,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:48:05,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:48:05,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:48:05,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:48:05,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:48:05,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:48:05,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:48:05,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:48:05,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:48:05,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:48:05,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:48:05,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:48:05,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 [2021-12-21 20:48:06,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:48:06,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:48:06,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:48:06,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:48:06,125 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:48:06,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-12-21 20:48:06,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76208de28/075e3acd412444ebbb90e96092eb43fe/FLAG01017fddf [2021-12-21 20:48:06,524 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:48:06,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-12-21 20:48:06,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76208de28/075e3acd412444ebbb90e96092eb43fe/FLAG01017fddf [2021-12-21 20:48:06,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76208de28/075e3acd412444ebbb90e96092eb43fe [2021-12-21 20:48:06,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:48:06,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:48:06,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:48:06,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:48:06,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:48:06,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfe24b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06, skipping insertion in model container [2021-12-21 20:48:06,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:48:06,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:48:06,675 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] [2021-12-21 20:48:06,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:48:06,680 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:48:06,693 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] [2021-12-21 20:48:06,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:48:06,702 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:48:06,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06 WrapperNode [2021-12-21 20:48:06,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:48:06,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:48:06,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:48:06,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:48:06,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,729 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-12-21 20:48:06,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:48:06,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:48:06,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:48:06,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:48:06,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:48:06,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:48:06,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:48:06,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:48:06,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (1/1) ... [2021-12-21 20:48:06,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:48:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:06,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 20:48:06,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 20:48:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-12-21 20:48:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-12-21 20:48:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:48:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:48:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:48:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:48:06,836 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:48:06,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:48:06,937 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:48:06,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:48:06,947 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 20:48:06,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:48:06 BoogieIcfgContainer [2021-12-21 20:48:06,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:48:06,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:48:06,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:48:06,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:48:06,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:48:06" (1/3) ... [2021-12-21 20:48:06,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d685d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:48:06, skipping insertion in model container [2021-12-21 20:48:06,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:48:06" (2/3) ... [2021-12-21 20:48:06,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d685d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:48:06, skipping insertion in model container [2021-12-21 20:48:06,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:48:06" (3/3) ... [2021-12-21 20:48:06,974 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-12-21 20:48:06,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:48:06,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-21 20:48:07,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:48:07,055 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 20:48:07,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-21 20:48:07,067 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) [2021-12-21 20:48:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:48:07,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:07,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:07,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 630876797, now seen corresponding path program 1 times [2021-12-21 20:48:07,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:07,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213616208] [2021-12-21 20:48:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:48:07,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:07,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213616208] [2021-12-21 20:48:07,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213616208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:07,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:07,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:07,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12805080] [2021-12-21 20:48:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:07,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:07,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:07,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:07,273 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) [2021-12-21 20:48:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:07,375 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-12-21 20:48:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:07,377 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 [2021-12-21 20:48:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:07,388 INFO L225 Difference]: With dead ends: 41 [2021-12-21 20:48:07,388 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 20:48:07,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:48:07,396 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 [2021-12-21 20:48:07,397 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] [2021-12-21 20:48:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 20:48:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-21 20:48:07,420 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) [2021-12-21 20:48:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-21 20:48:07,422 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 8 [2021-12-21 20:48:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:07,423 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-21 20:48:07,423 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) [2021-12-21 20:48:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-21 20:48:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 20:48:07,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:07,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:07,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:48:07,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1917655731, now seen corresponding path program 1 times [2021-12-21 20:48:07,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:07,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681532496] [2021-12-21 20:48:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:48:07,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:07,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681532496] [2021-12-21 20:48:07,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681532496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:07,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:07,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:48:07,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738035646] [2021-12-21 20:48:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:07,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:48:07,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:48:07,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:48:07,464 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) [2021-12-21 20:48:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:07,486 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-12-21 20:48:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:48:07,486 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 [2021-12-21 20:48:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:07,489 INFO L225 Difference]: With dead ends: 29 [2021-12-21 20:48:07,489 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 20:48:07,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:48:07,494 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 [2021-12-21 20:48:07,495 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] [2021-12-21 20:48:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 20:48:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-21 20:48:07,503 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) [2021-12-21 20:48:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-21 20:48:07,505 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2021-12-21 20:48:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-21 20:48:07,506 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) [2021-12-21 20:48:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-21 20:48:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 20:48:07,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:07,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:07,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:48:07,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash -337751957, now seen corresponding path program 1 times [2021-12-21 20:48:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:07,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203179074] [2021-12-21 20:48:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 20:48:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:48:07,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:07,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203179074] [2021-12-21 20:48:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203179074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:07,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:48:07,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024491124] [2021-12-21 20:48:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:48:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:48:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:48:07,552 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) [2021-12-21 20:48:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:07,559 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-21 20:48:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:48:07,560 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 [2021-12-21 20:48:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:07,560 INFO L225 Difference]: With dead ends: 25 [2021-12-21 20:48:07,561 INFO L226 Difference]: Without dead ends: 21 [2021-12-21 20:48:07,561 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 [2021-12-21 20:48:07,562 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 [2021-12-21 20:48:07,562 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] [2021-12-21 20:48:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-21 20:48:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-21 20:48:07,565 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) [2021-12-21 20:48:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-21 20:48:07,566 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 11 [2021-12-21 20:48:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-21 20:48:07,566 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) [2021-12-21 20:48:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-21 20:48:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 20:48:07,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:07,567 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] [2021-12-21 20:48:07,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:48:07,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash -332002831, now seen corresponding path program 1 times [2021-12-21 20:48:07,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:07,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646735263] [2021-12-21 20:48:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 20:48:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 20:48:07,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646735263] [2021-12-21 20:48:07,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646735263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:07,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:07,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:07,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794330951] [2021-12-21 20:48:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:07,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:07,647 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) [2021-12-21 20:48:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:07,678 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-12-21 20:48:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:07,679 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 [2021-12-21 20:48:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:07,680 INFO L225 Difference]: With dead ends: 37 [2021-12-21 20:48:07,680 INFO L226 Difference]: Without dead ends: 35 [2021-12-21 20:48:07,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:07,681 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 [2021-12-21 20:48:07,681 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] [2021-12-21 20:48:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-21 20:48:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-12-21 20:48:07,686 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) [2021-12-21 20:48:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-12-21 20:48:07,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2021-12-21 20:48:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:07,688 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-21 20:48:07,688 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) [2021-12-21 20:48:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-12-21 20:48:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-21 20:48:07,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:07,689 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] [2021-12-21 20:48:07,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 20:48:07,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:07,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1690949841, now seen corresponding path program 1 times [2021-12-21 20:48:07,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:07,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390657809] [2021-12-21 20:48:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 20:48:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 20:48:07,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390657809] [2021-12-21 20:48:07,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390657809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472862058] [2021-12-21 20:48:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:07,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:07,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:07,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:48:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:07,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 20:48:07,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 20:48:07,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 20:48:08,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472862058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:08,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:08,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-12-21 20:48:08,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295573033] [2021-12-21 20:48:08,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:08,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:48:08,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:48:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:48:08,144 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) [2021-12-21 20:48:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:08,347 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2021-12-21 20:48:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:08,349 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 [2021-12-21 20:48:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:08,350 INFO L225 Difference]: With dead ends: 91 [2021-12-21 20:48:08,350 INFO L226 Difference]: Without dead ends: 65 [2021-12-21 20:48:08,351 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 [2021-12-21 20:48:08,352 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:08,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 101 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-21 20:48:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2021-12-21 20:48:08,359 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) [2021-12-21 20:48:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-12-21 20:48:08,360 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2021-12-21 20:48:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:08,360 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-12-21 20:48:08,360 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) [2021-12-21 20:48:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-12-21 20:48:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 20:48:08,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:08,361 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:48:08,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:08,575 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 [2021-12-21 20:48:08,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1550339203, now seen corresponding path program 2 times [2021-12-21 20:48:08,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:08,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024118196] [2021-12-21 20:48:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:08,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 20:48:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:08,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:08,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024118196] [2021-12-21 20:48:08,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024118196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060559263] [2021-12-21 20:48:08,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:08,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:08,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:08,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:48:08,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:08,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:08,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:48:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:08,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:48:08,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060559263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:08,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 20:48:08,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-12-21 20:48:08,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152786191] [2021-12-21 20:48:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:08,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:08,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:08,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 20:48:08,723 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) [2021-12-21 20:48:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:08,741 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-12-21 20:48:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:08,741 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 [2021-12-21 20:48:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:08,742 INFO L225 Difference]: With dead ends: 61 [2021-12-21 20:48:08,742 INFO L226 Difference]: Without dead ends: 60 [2021-12-21 20:48:08,742 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 [2021-12-21 20:48:08,743 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 [2021-12-21 20:48:08,744 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] [2021-12-21 20:48:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-21 20:48:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-12-21 20:48:08,749 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) [2021-12-21 20:48:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2021-12-21 20:48:08,750 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2021-12-21 20:48:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:08,750 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2021-12-21 20:48:08,751 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) [2021-12-21 20:48:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2021-12-21 20:48:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-21 20:48:08,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:08,751 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] [2021-12-21 20:48:08,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:08,955 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 [2021-12-21 20:48:08,956 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash -815874983, now seen corresponding path program 1 times [2021-12-21 20:48:08,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:08,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662783650] [2021-12-21 20:48:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:08,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 20:48:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:09,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662783650] [2021-12-21 20:48:09,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662783650] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484400113] [2021-12-21 20:48:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:09,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:09,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:09,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:09,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:48:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:48:09,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:09,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:48:09,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484400113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:09,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:09,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2021-12-21 20:48:09,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105079065] [2021-12-21 20:48:09,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:09,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 20:48:09,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 20:48:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 20:48:09,162 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) [2021-12-21 20:48:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:09,220 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-12-21 20:48:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 20:48:09,221 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 [2021-12-21 20:48:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:09,222 INFO L225 Difference]: With dead ends: 70 [2021-12-21 20:48:09,222 INFO L226 Difference]: Without dead ends: 69 [2021-12-21 20:48:09,223 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 [2021-12-21 20:48:09,223 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:09,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 147 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-21 20:48:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-12-21 20:48:09,230 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) [2021-12-21 20:48:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-12-21 20:48:09,231 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 26 [2021-12-21 20:48:09,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:09,231 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-12-21 20:48:09,231 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) [2021-12-21 20:48:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-12-21 20:48:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:48:09,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:09,233 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] [2021-12-21 20:48:09,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:09,435 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 [2021-12-21 20:48:09,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 631942748, now seen corresponding path program 1 times [2021-12-21 20:48:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519057926] [2021-12-21 20:48:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:09,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 20:48:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 20:48:09,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:09,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519057926] [2021-12-21 20:48:09,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519057926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:09,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170602420] [2021-12-21 20:48:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:09,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:09,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:09,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:48:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 20:48:09,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 20:48:09,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 20:48:09,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170602420] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:09,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:09,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2021-12-21 20:48:09,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317539652] [2021-12-21 20:48:09,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:48:09,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:48:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:48:09,835 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) [2021-12-21 20:48:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:09,944 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2021-12-21 20:48:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 20:48:09,944 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 [2021-12-21 20:48:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:09,946 INFO L225 Difference]: With dead ends: 138 [2021-12-21 20:48:09,946 INFO L226 Difference]: Without dead ends: 137 [2021-12-21 20:48:09,946 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 [2021-12-21 20:48:09,947 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 [2021-12-21 20:48:09,947 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] [2021-12-21 20:48:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-21 20:48:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-12-21 20:48:09,958 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) [2021-12-21 20:48:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-21 20:48:09,959 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 45 [2021-12-21 20:48:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:09,959 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-21 20:48:09,959 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) [2021-12-21 20:48:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-21 20:48:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 20:48:09,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:09,961 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] [2021-12-21 20:48:09,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:10,177 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 [2021-12-21 20:48:10,177 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1516546273, now seen corresponding path program 1 times [2021-12-21 20:48:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:10,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38248971] [2021-12-21 20:48:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:10,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 20:48:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 20:48:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 20:48:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-21 20:48:10,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:10,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38248971] [2021-12-21 20:48:10,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38248971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:10,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:10,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366162989] [2021-12-21 20:48:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:10,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:10,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:10,260 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) [2021-12-21 20:48:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:10,282 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2021-12-21 20:48:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:10,282 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 [2021-12-21 20:48:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:10,285 INFO L225 Difference]: With dead ends: 112 [2021-12-21 20:48:10,285 INFO L226 Difference]: Without dead ends: 111 [2021-12-21 20:48:10,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:10,288 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 [2021-12-21 20:48:10,289 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] [2021-12-21 20:48:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-21 20:48:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-12-21 20:48:10,313 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) [2021-12-21 20:48:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-21 20:48:10,317 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 70 [2021-12-21 20:48:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:10,317 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-21 20:48:10,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 20:48:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-21 20:48:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 20:48:10,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:10,323 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] [2021-12-21 20:48:10,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 20:48:10,323 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -514534523, now seen corresponding path program 2 times [2021-12-21 20:48:10,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:10,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335080600] [2021-12-21 20:48:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:10,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 20:48:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-21 20:48:10,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:10,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335080600] [2021-12-21 20:48:10,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335080600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:48:10,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:48:10,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:48:10,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876439166] [2021-12-21 20:48:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:48:10,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:48:10,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:48:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:10,414 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) [2021-12-21 20:48:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:10,437 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2021-12-21 20:48:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:48:10,437 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 [2021-12-21 20:48:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:10,438 INFO L225 Difference]: With dead ends: 112 [2021-12-21 20:48:10,438 INFO L226 Difference]: Without dead ends: 111 [2021-12-21 20:48:10,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:48:10,439 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 [2021-12-21 20:48:10,440 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] [2021-12-21 20:48:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-21 20:48:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-12-21 20:48:10,445 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) [2021-12-21 20:48:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2021-12-21 20:48:10,446 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 71 [2021-12-21 20:48:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:10,447 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2021-12-21 20:48:10,447 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) [2021-12-21 20:48:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2021-12-21 20:48:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 20:48:10,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:10,448 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] [2021-12-21 20:48:10,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 20:48:10,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash -558108924, now seen corresponding path program 2 times [2021-12-21 20:48:10,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416735364] [2021-12-21 20:48:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:10,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 20:48:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 61 proven. 158 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-21 20:48:10,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416735364] [2021-12-21 20:48:10,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416735364] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696577477] [2021-12-21 20:48:10,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:10,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:10,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:10,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:48:10,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:10,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:10,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 20:48:10,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 206 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-21 20:48:10,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 209 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-21 20:48:11,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696577477] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:11,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:11,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2021-12-21 20:48:11,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445451878] [2021-12-21 20:48:11,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:11,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 20:48:11,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 20:48:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:11,183 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) [2021-12-21 20:48:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:11,280 INFO L93 Difference]: Finished difference Result 178 states and 303 transitions. [2021-12-21 20:48:11,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:11,281 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 [2021-12-21 20:48:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:11,282 INFO L225 Difference]: With dead ends: 178 [2021-12-21 20:48:11,282 INFO L226 Difference]: Without dead ends: 83 [2021-12-21 20:48:11,283 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 [2021-12-21 20:48:11,284 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 102 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2021-12-21 20:48:11,284 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] [2021-12-21 20:48:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-21 20:48:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2021-12-21 20:48:11,288 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) [2021-12-21 20:48:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2021-12-21 20:48:11,288 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 123 [2021-12-21 20:48:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:11,289 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2021-12-21 20:48:11,289 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) [2021-12-21 20:48:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2021-12-21 20:48:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-21 20:48:11,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:11,290 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] [2021-12-21 20:48:11,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:11,508 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 [2021-12-21 20:48:11,508 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:11,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1387210375, now seen corresponding path program 3 times [2021-12-21 20:48:11,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:11,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435339054] [2021-12-21 20:48:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:11,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 20:48:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 20:48:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 94 proven. 279 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2021-12-21 20:48:11,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:11,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435339054] [2021-12-21 20:48:11,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435339054] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:11,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520733758] [2021-12-21 20:48:11,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:11,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:11,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:11,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:11,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:48:11,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-21 20:48:11,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:11,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:48:11,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 310 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-12-21 20:48:11,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 310 proven. 22 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-12-21 20:48:12,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520733758] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:12,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:12,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2021-12-21 20:48:12,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245045203] [2021-12-21 20:48:12,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:12,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 20:48:12,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 20:48:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:12,293 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) [2021-12-21 20:48:12,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:12,403 INFO L93 Difference]: Finished difference Result 125 states and 175 transitions. [2021-12-21 20:48:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 20:48:12,403 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 [2021-12-21 20:48:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:12,404 INFO L225 Difference]: With dead ends: 125 [2021-12-21 20:48:12,404 INFO L226 Difference]: Without dead ends: 59 [2021-12-21 20:48:12,404 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 [2021-12-21 20:48:12,405 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:12,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 86 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-21 20:48:12,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-21 20:48:12,408 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) [2021-12-21 20:48:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2021-12-21 20:48:12,409 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 176 [2021-12-21 20:48:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:12,409 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2021-12-21 20:48:12,409 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) [2021-12-21 20:48:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2021-12-21 20:48:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 20:48:12,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:12,410 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2021-12-21 20:48:12,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:12,623 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 [2021-12-21 20:48:12,623 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 287106693, now seen corresponding path program 4 times [2021-12-21 20:48:12,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:12,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282006252] [2021-12-21 20:48:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:12,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 20:48:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 82 proven. 129 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-21 20:48:12,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282006252] [2021-12-21 20:48:12,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282006252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662789759] [2021-12-21 20:48:12,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:48:12,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:12,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:12,799 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:12,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 20:48:12,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:48:12,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 20:48:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 20:48:12,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-21 20:48:13,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662789759] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:13,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:13,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 23 [2021-12-21 20:48:13,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538234813] [2021-12-21 20:48:13,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:13,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 20:48:13,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 20:48:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-21 20:48:13,471 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2021-12-21 20:48:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:13,626 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2021-12-21 20:48:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 20:48:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) Word has length 104 [2021-12-21 20:48:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:13,627 INFO L225 Difference]: With dead ends: 128 [2021-12-21 20:48:13,627 INFO L226 Difference]: Without dead ends: 75 [2021-12-21 20:48:13,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=656, Unknown=0, NotChecked=0, Total=930 [2021-12-21 20:48:13,628 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 137 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:13,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 109 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-21 20:48:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-12-21 20:48:13,631 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) [2021-12-21 20:48:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-12-21 20:48:13,631 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 104 [2021-12-21 20:48:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:13,631 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-12-21 20:48:13,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2021-12-21 20:48:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-12-21 20:48:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 20:48:13,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:13,632 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2021-12-21 20:48:13,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:13,852 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 [2021-12-21 20:48:13,853 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1064462898, now seen corresponding path program 3 times [2021-12-21 20:48:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:13,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447404995] [2021-12-21 20:48:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:13,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 20:48:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-21 20:48:13,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:13,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447404995] [2021-12-21 20:48:13,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447404995] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:13,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26791418] [2021-12-21 20:48:13,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:13,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:13,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:13,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:13,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 20:48:14,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-21 20:48:14,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:14,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:48:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-21 20:48:14,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-21 20:48:14,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26791418] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:14,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:14,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2021-12-21 20:48:14,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7224756] [2021-12-21 20:48:14,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:14,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 20:48:14,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 20:48:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-21 20:48:14,302 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) [2021-12-21 20:48:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:14,360 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-12-21 20:48:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 20:48:14,360 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 85 [2021-12-21 20:48:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:14,361 INFO L225 Difference]: With dead ends: 65 [2021-12-21 20:48:14,361 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 20:48:14,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:48:14,362 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:14,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 159 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:48:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 20:48:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-21 20:48:14,364 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) [2021-12-21 20:48:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-21 20:48:14,365 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 85 [2021-12-21 20:48:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-21 20:48:14,365 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) [2021-12-21 20:48:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-21 20:48:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-21 20:48:14,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:14,367 INFO L514 BasicCegarLoop]: trace histogram [26, 23, 21, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 8, 5, 1, 1, 1, 1, 1] [2021-12-21 20:48:14,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:14,583 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 [2021-12-21 20:48:14,584 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash 231545828, now seen corresponding path program 5 times [2021-12-21 20:48:14,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:14,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407863248] [2021-12-21 20:48:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:14,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 20:48:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-21 20:48:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 273 proven. 631 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-12-21 20:48:14,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407863248] [2021-12-21 20:48:14,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407863248] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543566004] [2021-12-21 20:48:14,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:48:14,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:14,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:14,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 20:48:14,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-21 20:48:14,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:14,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 20:48:14,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 964 proven. 384 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2021-12-21 20:48:15,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2019 backedges. 323 proven. 606 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-12-21 20:48:15,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543566004] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:15,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:15,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 25 [2021-12-21 20:48:15,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530359499] [2021-12-21 20:48:15,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:15,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-21 20:48:15,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-21 20:48:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-12-21 20:48:15,880 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 25 states, 25 states have (on average 5.48) internal successors, (137), 25 states have internal predecessors, (137), 17 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2021-12-21 20:48:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:16,071 INFO L93 Difference]: Finished difference Result 153 states and 185 transitions. [2021-12-21 20:48:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 20:48:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.48) internal successors, (137), 25 states have internal predecessors, (137), 17 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) Word has length 242 [2021-12-21 20:48:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:16,073 INFO L225 Difference]: With dead ends: 153 [2021-12-21 20:48:16,073 INFO L226 Difference]: Without dead ends: 95 [2021-12-21 20:48:16,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 520 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=830, Unknown=0, NotChecked=0, Total=1190 [2021-12-21 20:48:16,075 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 186 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:16,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 119 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-21 20:48:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2021-12-21 20:48:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 63 states have internal predecessors, (71), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2021-12-21 20:48:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2021-12-21 20:48:16,080 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 242 [2021-12-21 20:48:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:16,081 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2021-12-21 20:48:16,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.48) internal successors, (137), 25 states have internal predecessors, (137), 17 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2021-12-21 20:48:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2021-12-21 20:48:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 20:48:16,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:16,082 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] [2021-12-21 20:48:16,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:16,297 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 [2021-12-21 20:48:16,298 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 361843588, now seen corresponding path program 6 times [2021-12-21 20:48:16,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:16,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370150752] [2021-12-21 20:48:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:16,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 20:48:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 197 proven. 68 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-21 20:48:16,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:16,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370150752] [2021-12-21 20:48:16,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370150752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:16,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961016182] [2021-12-21 20:48:16,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 20:48:16,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:16,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:16,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:16,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 20:48:16,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-21 20:48:16,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:16,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 20:48:16,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-21 20:48:16,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 160 proven. 139 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-21 20:48:17,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961016182] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:17,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:17,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 21 [2021-12-21 20:48:17,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71797745] [2021-12-21 20:48:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:17,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 20:48:17,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 20:48:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2021-12-21 20:48:17,099 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (21), 14 states have call predecessors, (21), 11 states have call successors, (21) [2021-12-21 20:48:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:17,260 INFO L93 Difference]: Finished difference Result 162 states and 202 transitions. [2021-12-21 20:48:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:48:17,260 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (21), 14 states have call predecessors, (21), 11 states have call successors, (21) Word has length 123 [2021-12-21 20:48:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:17,261 INFO L225 Difference]: With dead ends: 162 [2021-12-21 20:48:17,261 INFO L226 Difference]: Without dead ends: 86 [2021-12-21 20:48:17,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:48:17,262 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 101 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:17,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 152 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-21 20:48:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2021-12-21 20:48:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 65 states have internal predecessors, (69), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2021-12-21 20:48:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2021-12-21 20:48:17,267 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 123 [2021-12-21 20:48:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:17,267 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2021-12-21 20:48:17,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (21), 14 states have call predecessors, (21), 11 states have call successors, (21) [2021-12-21 20:48:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2021-12-21 20:48:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 20:48:17,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:17,268 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] [2021-12-21 20:48:17,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:17,484 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 [2021-12-21 20:48:17,485 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash 534661593, now seen corresponding path program 7 times [2021-12-21 20:48:17,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:17,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945347722] [2021-12-21 20:48:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:17,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 20:48:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-12-21 20:48:17,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:17,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945347722] [2021-12-21 20:48:17,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945347722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396373678] [2021-12-21 20:48:17,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-21 20:48:17,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:17,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:17,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:17,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 20:48:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:17,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-21 20:48:17,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-12-21 20:48:17,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-12-21 20:48:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396373678] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:18,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:18,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2021-12-21 20:48:18,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890205785] [2021-12-21 20:48:18,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:18,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 20:48:18,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 20:48:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2021-12-21 20:48:18,743 INFO L87 Difference]: Start difference. First operand 83 states and 97 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) [2021-12-21 20:48:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:18,850 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2021-12-21 20:48:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 20:48:18,850 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 [2021-12-21 20:48:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:18,851 INFO L225 Difference]: With dead ends: 114 [2021-12-21 20:48:18,851 INFO L226 Difference]: Without dead ends: 113 [2021-12-21 20:48:18,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-12-21 20:48:18,852 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:18,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 295 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-21 20:48:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2021-12-21 20:48:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 80 states have internal predecessors, (85), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (34), 14 states have call predecessors, (34), 11 states have call successors, (34) [2021-12-21 20:48:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2021-12-21 20:48:18,857 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 149 [2021-12-21 20:48:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:18,857 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2021-12-21 20:48:18,857 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) [2021-12-21 20:48:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2021-12-21 20:48:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-21 20:48:18,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:18,859 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] [2021-12-21 20:48:18,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:19,071 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 [2021-12-21 20:48:19,071 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1985047649, now seen corresponding path program 8 times [2021-12-21 20:48:19,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:19,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589437051] [2021-12-21 20:48:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:19,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 20:48:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 534 proven. 998 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2021-12-21 20:48:19,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:19,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589437051] [2021-12-21 20:48:19,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589437051] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:19,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061834730] [2021-12-21 20:48:19,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:19,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:19,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:19,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 20:48:19,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:19,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:19,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 20:48:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 599 proven. 1181 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-12-21 20:48:19,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 599 proven. 1253 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2021-12-21 20:48:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061834730] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:21,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:21,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 23] total 33 [2021-12-21 20:48:21,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024778705] [2021-12-21 20:48:21,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 20:48:21,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 20:48:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-12-21 20:48:21,210 INFO L87 Difference]: Start difference. First operand 103 states and 131 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) [2021-12-21 20:48:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:21,599 INFO L93 Difference]: Finished difference Result 239 states and 328 transitions. [2021-12-21 20:48:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 20:48:21,600 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 306 [2021-12-21 20:48:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:21,601 INFO L225 Difference]: With dead ends: 239 [2021-12-21 20:48:21,601 INFO L226 Difference]: Without dead ends: 142 [2021-12-21 20:48:21,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 657 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=646, Invalid=1804, Unknown=0, NotChecked=0, Total=2450 [2021-12-21 20:48:21,602 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 402 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:21,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 179 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-21 20:48:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2021-12-21 20:48:21,607 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) [2021-12-21 20:48:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2021-12-21 20:48:21,608 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 306 [2021-12-21 20:48:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:21,609 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2021-12-21 20:48:21,609 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) [2021-12-21 20:48:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2021-12-21 20:48:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-21 20:48:21,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:21,611 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] [2021-12-21 20:48:21,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:21,828 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 [2021-12-21 20:48:21,828 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash -448813433, now seen corresponding path program 9 times [2021-12-21 20:48:21,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:21,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359265227] [2021-12-21 20:48:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:21,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-21 20:48:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 609 proven. 736 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2021-12-21 20:48:22,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:22,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359265227] [2021-12-21 20:48:22,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359265227] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:22,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749666119] [2021-12-21 20:48:22,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:22,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:22,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:22,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 20:48:22,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-12-21 20:48:22,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:22,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 20:48:22,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 1881 proven. 173 refuted. 0 times theorem prover too weak. 1214 trivial. 0 not checked. [2021-12-21 20:48:22,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3268 backedges. 570 proven. 538 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2021-12-21 20:48:23,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749666119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:23,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:23,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 13] total 24 [2021-12-21 20:48:23,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438345803] [2021-12-21 20:48:23,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:23,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-21 20:48:23,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-21 20:48:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-12-21 20:48:23,299 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 13 states have call successors, (24), 2 states have call predecessors, (24), 10 states have return successors, (29), 19 states have call predecessors, (29), 13 states have call successors, (29) [2021-12-21 20:48:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:23,556 INFO L93 Difference]: Finished difference Result 241 states and 314 transitions. [2021-12-21 20:48:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 20:48:23,556 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 13 states have call successors, (24), 2 states have call predecessors, (24), 10 states have return successors, (29), 19 states have call predecessors, (29), 13 states have call successors, (29) Word has length 306 [2021-12-21 20:48:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:23,557 INFO L225 Difference]: With dead ends: 241 [2021-12-21 20:48:23,557 INFO L226 Difference]: Without dead ends: 118 [2021-12-21 20:48:23,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 662 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-12-21 20:48:23,558 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 126 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:23,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 144 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:48:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-21 20:48:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-12-21 20:48:23,562 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) [2021-12-21 20:48:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-12-21 20:48:23,563 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 306 [2021-12-21 20:48:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:23,565 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-12-21 20:48:23,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 13 states have call successors, (24), 2 states have call predecessors, (24), 10 states have return successors, (29), 19 states have call predecessors, (29), 13 states have call successors, (29) [2021-12-21 20:48:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-12-21 20:48:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-21 20:48:23,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:23,568 INFO L514 BasicCegarLoop]: trace histogram [36, 34, 29, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 11, 7, 1, 1, 1, 1, 1] [2021-12-21 20:48:23,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:23,779 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 [2021-12-21 20:48:23,779 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -101090713, now seen corresponding path program 10 times [2021-12-21 20:48:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535556632] [2021-12-21 20:48:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:23,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-21 20:48:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 988 proven. 816 refuted. 0 times theorem prover too weak. 2379 trivial. 0 not checked. [2021-12-21 20:48:24,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535556632] [2021-12-21 20:48:24,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535556632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630815662] [2021-12-21 20:48:24,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:48:24,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:24,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:24,092 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:24,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 20:48:24,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:48:24,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:24,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 20:48:24,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 884 proven. 1214 refuted. 0 times theorem prover too weak. 2085 trivial. 0 not checked. [2021-12-21 20:48:24,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 884 proven. 1290 refuted. 0 times theorem prover too weak. 2009 trivial. 0 not checked. [2021-12-21 20:48:26,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630815662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:26,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:26,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 23] total 33 [2021-12-21 20:48:26,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699917658] [2021-12-21 20:48:26,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:26,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-21 20:48:26,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-21 20:48:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2021-12-21 20:48:26,037 INFO L87 Difference]: Start difference. First operand 106 states and 127 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) [2021-12-21 20:48:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:26,395 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2021-12-21 20:48:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 20:48:26,395 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 345 [2021-12-21 20:48:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:26,396 INFO L225 Difference]: With dead ends: 224 [2021-12-21 20:48:26,396 INFO L226 Difference]: Without dead ends: 124 [2021-12-21 20:48:26,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 742 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-12-21 20:48:26,398 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 343 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:26,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 211 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 20:48:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-21 20:48:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-12-21 20:48:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 88 states have internal predecessors, (93), 14 states have call successors, (14), 11 states have call predecessors, (14), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2021-12-21 20:48:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2021-12-21 20:48:26,401 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 345 [2021-12-21 20:48:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:26,402 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2021-12-21 20:48:26,402 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) [2021-12-21 20:48:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2021-12-21 20:48:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2021-12-21 20:48:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:26,406 INFO L514 BasicCegarLoop]: trace histogram [68, 65, 55, 34, 34, 34, 34, 33, 33, 33, 33, 33, 32, 32, 31, 31, 21, 13, 1, 1, 1, 1, 1] [2021-12-21 20:48:26,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:26,622 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 [2021-12-21 20:48:26,623 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2142451403, now seen corresponding path program 11 times [2021-12-21 20:48:26,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208325167] [2021-12-21 20:48:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:26,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:48:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-21 20:48:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2021-12-21 20:48:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 1187 proven. 3773 refuted. 0 times theorem prover too weak. 10493 trivial. 0 not checked. [2021-12-21 20:48:27,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208325167] [2021-12-21 20:48:27,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208325167] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707756136] [2021-12-21 20:48:27,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:48:27,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:27,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:27,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 20:48:27,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2021-12-21 20:48:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-21 20:48:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7412 proven. 2113 refuted. 0 times theorem prover too weak. 5928 trivial. 0 not checked. [2021-12-21 20:48:28,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 2057 proven. 3625 refuted. 0 times theorem prover too weak. 9771 trivial. 0 not checked. [2021-12-21 20:48:30,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707756136] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:30,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:30,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 29] total 45 [2021-12-21 20:48:30,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066138588] [2021-12-21 20:48:30,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:30,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-21 20:48:30,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-21 20:48:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2021-12-21 20:48:30,229 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 44 states have internal predecessors, (231), 34 states have call successors, (43), 6 states have call predecessors, (43), 16 states have return successors, (54), 26 states have call predecessors, (54), 31 states have call successors, (54) [2021-12-21 20:48:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:31,029 INFO L93 Difference]: Finished difference Result 332 states and 465 transitions. [2021-12-21 20:48:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-21 20:48:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 44 states have internal predecessors, (231), 34 states have call successors, (43), 6 states have call predecessors, (43), 16 states have return successors, (54), 26 states have call predecessors, (54), 31 states have call successors, (54) Word has length 654 [2021-12-21 20:48:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:31,032 INFO L225 Difference]: With dead ends: 332 [2021-12-21 20:48:31,032 INFO L226 Difference]: Without dead ends: 226 [2021-12-21 20:48:31,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1417 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1584, Invalid=5388, Unknown=0, NotChecked=0, Total=6972 [2021-12-21 20:48:31,034 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 729 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:31,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 270 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:48:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-21 20:48:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 197. [2021-12-21 20:48:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 160 states have (on average 1.04375) internal successors, (167), 157 states have internal predecessors, (167), 26 states have call successors, (26), 22 states have call predecessors, (26), 10 states have return successors, (70), 17 states have call predecessors, (70), 25 states have call successors, (70) [2021-12-21 20:48:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 263 transitions. [2021-12-21 20:48:31,043 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 263 transitions. Word has length 654 [2021-12-21 20:48:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:31,043 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 263 transitions. [2021-12-21 20:48:31,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 44 states have internal predecessors, (231), 34 states have call successors, (43), 6 states have call predecessors, (43), 16 states have return successors, (54), 26 states have call predecessors, (54), 31 states have call successors, (54) [2021-12-21 20:48:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 263 transitions. [2021-12-21 20:48:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-21 20:48:31,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:31,045 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] [2021-12-21 20:48:31,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:31,262 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 [2021-12-21 20:48:31,263 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:31,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1536889272, now seen corresponding path program 12 times [2021-12-21 20:48:31,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:31,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699176847] [2021-12-21 20:48:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:31,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-21 20:48:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2021-12-21 20:48:31,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:31,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699176847] [2021-12-21 20:48:31,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699176847] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:31,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501591947] [2021-12-21 20:48:31,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 20:48:31,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:31,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:31,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 20:48:31,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2021-12-21 20:48:31,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:31,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-21 20:48:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2021-12-21 20:48:32,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2021-12-21 20:48:36,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501591947] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:36,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:36,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2021-12-21 20:48:36,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138718507] [2021-12-21 20:48:36,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:36,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-21 20:48:36,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-21 20:48:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-12-21 20:48:36,619 INFO L87 Difference]: Start difference. First operand 197 states and 263 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) [2021-12-21 20:48:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:36,747 INFO L93 Difference]: Finished difference Result 226 states and 307 transitions. [2021-12-21 20:48:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 20:48:36,747 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 [2021-12-21 20:48:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:36,756 INFO L225 Difference]: With dead ends: 226 [2021-12-21 20:48:36,756 INFO L226 Difference]: Without dead ends: 225 [2021-12-21 20:48:36,757 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 [2021-12-21 20:48:36,758 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:36,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 246 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:48:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-21 20:48:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 219. [2021-12-21 20:48:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 178 states have (on average 1.0393258426966292) internal successors, (185), 173 states have internal predecessors, (185), 28 states have call successors, (28), 22 states have call predecessors, (28), 12 states have return successors, (84), 23 states have call predecessors, (84), 27 states have call successors, (84) [2021-12-21 20:48:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 297 transitions. [2021-12-21 20:48:36,767 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 297 transitions. Word has length 404 [2021-12-21 20:48:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:36,767 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 297 transitions. [2021-12-21 20:48:36,767 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) [2021-12-21 20:48:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 297 transitions. [2021-12-21 20:48:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2021-12-21 20:48:36,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:36,772 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] [2021-12-21 20:48:36,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:36,985 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 [2021-12-21 20:48:36,986 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:36,986 INFO L85 PathProgramCache]: Analyzing trace with hash 842626985, now seen corresponding path program 13 times [2021-12-21 20:48:36,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:36,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350020522] [2021-12-21 20:48:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:36,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:48:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2021-12-21 20:48:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2384 proven. 4185 refuted. 0 times theorem prover too weak. 17606 trivial. 0 not checked. [2021-12-21 20:48:37,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350020522] [2021-12-21 20:48:37,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350020522] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956855800] [2021-12-21 20:48:37,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-21 20:48:37,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:37,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:37,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 20:48:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:48:38,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 12343 proven. 2667 refuted. 0 times theorem prover too weak. 9165 trivial. 0 not checked. [2021-12-21 20:48:38,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 24175 backedges. 2261 proven. 5308 refuted. 0 times theorem prover too weak. 16606 trivial. 0 not checked. [2021-12-21 20:48:41,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956855800] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:41,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:41,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 27] total 39 [2021-12-21 20:48:41,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723624569] [2021-12-21 20:48:41,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:41,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-21 20:48:41,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-21 20:48:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1120, Unknown=0, NotChecked=0, Total=1482 [2021-12-21 20:48:41,931 INFO L87 Difference]: Start difference. First operand 219 states and 297 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) [2021-12-21 20:48:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:42,413 INFO L93 Difference]: Finished difference Result 439 states and 620 transitions. [2021-12-21 20:48:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 20:48:42,414 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 [2021-12-21 20:48:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:42,416 INFO L225 Difference]: With dead ends: 439 [2021-12-21 20:48:42,416 INFO L226 Difference]: Without dead ends: 226 [2021-12-21 20:48:42,417 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 [2021-12-21 20:48:42,417 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 280 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:42,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 274 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:48:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-21 20:48:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 190. [2021-12-21 20:48:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 151 states have internal predecessors, (159), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (63), 18 states have call predecessors, (63), 24 states have call successors, (63) [2021-12-21 20:48:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2021-12-21 20:48:42,426 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 816 [2021-12-21 20:48:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:42,427 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2021-12-21 20:48:42,427 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) [2021-12-21 20:48:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2021-12-21 20:48:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2021-12-21 20:48:42,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:42,432 INFO L514 BasicCegarLoop]: trace histogram [94, 92, 76, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 45, 45, 29, 18, 1, 1, 1, 1, 1] [2021-12-21 20:48:42,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:42,652 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 [2021-12-21 20:48:42,652 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1561361232, now seen corresponding path program 14 times [2021-12-21 20:48:42,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790368058] [2021-12-21 20:48:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:42,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:48:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2021-12-21 20:48:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30407 backedges. 3955 proven. 4351 refuted. 0 times theorem prover too weak. 22101 trivial. 0 not checked. [2021-12-21 20:48:43,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790368058] [2021-12-21 20:48:43,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790368058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430891572] [2021-12-21 20:48:43,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:48:43,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:43,592 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:43,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 20:48:43,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:48:43,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:43,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 20:48:43,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30407 backedges. 3799 proven. 5527 refuted. 0 times theorem prover too weak. 21081 trivial. 0 not checked. [2021-12-21 20:48:44,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:48:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30407 backedges. 3799 proven. 5699 refuted. 0 times theorem prover too weak. 20909 trivial. 0 not checked. [2021-12-21 20:48:48,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430891572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:48:48,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:48:48,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 31] total 45 [2021-12-21 20:48:48,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733042829] [2021-12-21 20:48:48,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:48:48,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-21 20:48:48,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:48:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-21 20:48:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2021-12-21 20:48:48,209 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) [2021-12-21 20:48:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:48:48,735 INFO L93 Difference]: Finished difference Result 399 states and 538 transitions. [2021-12-21 20:48:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 20:48:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) Word has length 914 [2021-12-21 20:48:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:48:48,738 INFO L225 Difference]: With dead ends: 399 [2021-12-21 20:48:48,738 INFO L226 Difference]: Without dead ends: 215 [2021-12-21 20:48:48,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2051 GetRequests, 1992 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=869, Invalid=2553, Unknown=0, NotChecked=0, Total=3422 [2021-12-21 20:48:48,740 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 335 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 20:48:48,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 317 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 20:48:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-21 20:48:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2021-12-21 20:48:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 133 states have internal predecessors, (137), 22 states have call successors, (22), 16 states have call predecessors, (22), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2021-12-21 20:48:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 215 transitions. [2021-12-21 20:48:48,751 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 215 transitions. Word has length 914 [2021-12-21 20:48:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:48:48,752 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 215 transitions. [2021-12-21 20:48:48,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 39 states have call successors, (43), 1 states have call predecessors, (43), 15 states have return successors, (62), 26 states have call predecessors, (62), 39 states have call successors, (62) [2021-12-21 20:48:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 215 transitions. [2021-12-21 20:48:48,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2021-12-21 20:48:48,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:48:48,759 INFO L514 BasicCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1, 1] [2021-12-21 20:48:48,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 20:48:48,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:48,978 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-21 20:48:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:48:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1889901600, now seen corresponding path program 15 times [2021-12-21 20:48:48,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:48:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088718845] [2021-12-21 20:48:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:48:48,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:48:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 20:48:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-21 20:48:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2021-12-21 20:48:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 20:48:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-21 20:48:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 20:48:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 20:48:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 20:48:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:48:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 20:48:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:48:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2021-12-21 20:48:50,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:48:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088718845] [2021-12-21 20:48:50,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088718845] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:48:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966256488] [2021-12-21 20:48:50,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:48:50,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:48:50,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:48:50,210 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:48:50,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 20:48:50,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-12-21 20:48:50,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:48:50,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 217 conjunts are in the unsatisfiable core [2021-12-21 20:48:50,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:48:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2021-12-21 20:48:52,411 INFO L328 TraceCheckSpWp]: Computing backward predicates...