/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:45:52,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:45:52,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:45:52,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:45:52,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:45:52,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:45:52,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:45:52,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:45:52,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:45:52,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:45:52,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:45:52,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:45:52,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:45:52,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:45:52,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:45:52,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:45:52,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:45:52,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:45:52,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:45:52,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:45:52,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:45:52,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:45:52,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:45:52,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:45:52,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:45:52,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:45:52,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:45:52,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:45:52,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:45:52,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:45:52,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:45:52,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:45:52,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:45:52,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:45:52,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:45:52,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:45:52,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:45:52,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:45:52,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:45:52,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:45:52,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:45:52,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:45:52,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:45:52,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:45:52,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:45:52,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:45:52,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:45:52,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:45:52,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:45:52,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:45:52,901 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:45:52,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:45:52,903 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:45:52,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:45:52,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:45:52,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:45:52,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:45:52,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:45:52,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:45:52,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:45:52,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:45:52,905 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:45:52,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:45:52,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:45:52,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:45:52,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:45:52,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:45:52,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:45:52,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:45:52,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:45:52,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:45:52,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:45:52,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:45:52,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:45:52,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:45:52,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:45:53,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:45:53,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:45:53,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:45:53,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:45:53,316 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:45:53,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_25-2.c [2022-10-16 17:45:53,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ddfead/61df02c5e74b45f2b3abb26a2c05a0b5/FLAG795e2c079 [2022-10-16 17:45:54,031 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:45:54,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_25-2.c [2022-10-16 17:45:54,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ddfead/61df02c5e74b45f2b3abb26a2c05a0b5/FLAG795e2c079 [2022-10-16 17:45:54,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3ddfead/61df02c5e74b45f2b3abb26a2c05a0b5 [2022-10-16 17:45:54,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:45:54,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:45:54,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:45:54,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:45:54,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:45:54,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd72b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54, skipping insertion in model container [2022-10-16 17:45:54,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:45:54,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:45:54,616 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-simple/fibo_2calls_25-2.c[952,965] [2022-10-16 17:45:54,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:45:54,628 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:45:54,647 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-simple/fibo_2calls_25-2.c[952,965] [2022-10-16 17:45:54,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:45:54,664 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:45:54,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54 WrapperNode [2022-10-16 17:45:54,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:45:54,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:45:54,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:45:54,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:45:54,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,704 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-16 17:45:54,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:45:54,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:45:54,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:45:54,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:45:54,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:45:54,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:45:54,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:45:54,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:45:54,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (1/1) ... [2022-10-16 17:45:54,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:45:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:54,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:45:54,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:45:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:45:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:45:54,843 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-16 17:45:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-16 17:45:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-16 17:45:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-16 17:45:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:45:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:45:54,932 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:45:54,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:45:55,141 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:45:55,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:45:55,162 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:45:55,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:55 BoogieIcfgContainer [2022-10-16 17:45:55,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:45:55,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:45:55,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:45:55,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:45:55,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:45:54" (1/3) ... [2022-10-16 17:45:55,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454cb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:55, skipping insertion in model container [2022-10-16 17:45:55,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:54" (2/3) ... [2022-10-16 17:45:55,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454cb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:55, skipping insertion in model container [2022-10-16 17:45:55,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:55" (3/3) ... [2022-10-16 17:45:55,190 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-2.c [2022-10-16 17:45:55,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:45:55,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:45:55,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:45:55,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5fba2f2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:45:55,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:45:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:45:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:45:55,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:55,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:55,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-10-16 17:45:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876401641] [2022-10-16 17:45:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:55,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:55,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876401641] [2022-10-16 17:45:55,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876401641] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:55,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:55,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112134037] [2022-10-16 17:45:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:55,857 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:56,000 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-10-16 17:45:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:45:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:45:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:56,017 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:45:56,017 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:45:56,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:45:56,026 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 40 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:56,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 178 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:45:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-10-16 17:45:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 48 states have internal predecessors, (56), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:45:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-10-16 17:45:56,083 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-10-16 17:45:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:56,083 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-10-16 17:45:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-10-16 17:45:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:45:56,085 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:56,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:45:56,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:56,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-10-16 17:45:56,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:56,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775148259] [2022-10-16 17:45:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:56,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:56,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775148259] [2022-10-16 17:45:56,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775148259] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:56,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:56,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:45:56,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81396955] [2022-10-16 17:45:56,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:45:56,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:45:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:56,186 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:56,220 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-10-16 17:45:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:45:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 17:45:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:56,224 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:45:56,227 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:45:56,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:56,229 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:56,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:45:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-10-16 17:45:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:45:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-16 17:45:56,258 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-10-16 17:45:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:56,258 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-16 17:45:56,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-16 17:45:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:45:56,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:56,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:45:56,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-10-16 17:45:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:56,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005645702] [2022-10-16 17:45:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:56,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:56,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005645702] [2022-10-16 17:45:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005645702] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:56,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:56,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:45:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714285662] [2022-10-16 17:45:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:56,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:56,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:45:56,440 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:56,598 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-10-16 17:45:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 17:45:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:56,605 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:45:56,606 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:45:56,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:45:56,608 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:56,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 72 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:45:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-10-16 17:45:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 42 states have internal predecessors, (48), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:45:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 17:45:56,635 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-10-16 17:45:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:56,636 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 17:45:56,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 17:45:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:45:56,637 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:56,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:56,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:45:56,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:56,642 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-10-16 17:45:56,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:56,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450644187] [2022-10-16 17:45:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450644187] [2022-10-16 17:45:56,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450644187] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:56,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:56,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:45:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087813611] [2022-10-16 17:45:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:45:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:45:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:56,736 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:56,770 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-10-16 17:45:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:45:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 17:45:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:56,772 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:45:56,772 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:45:56,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:45:56,774 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:56,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:45:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-10-16 17:45:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:45:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-10-16 17:45:56,788 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-10-16 17:45:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-10-16 17:45:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:45:56,789 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-10-16 17:45:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:45:56,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:56,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:45:56,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-10-16 17:45:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471022800] [2022-10-16 17:45:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:45:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:45:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:57,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471022800] [2022-10-16 17:45:57,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471022800] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:57,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:57,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051012509] [2022-10-16 17:45:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:57,067 INFO L87 Difference]: Start difference. First operand 50 states and 59 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) [2022-10-16 17:45:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:57,137 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-16 17:45:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:57,141 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 23 [2022-10-16 17:45:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:57,148 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:45:57,149 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:45:57,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:57,157 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 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 [2022-10-16 17:45:57,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:45:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-10-16 17:45:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-10-16 17:45:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-16 17:45:57,197 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-10-16 17:45:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-16 17:45:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-16 17:45:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:45:57,203 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:57,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 17:45:57,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-10-16 17:45:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:57,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646303542] [2022-10-16 17:45:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 17:45:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 17:45:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646303542] [2022-10-16 17:45:57,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646303542] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14605606] [2022-10-16 17:45:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:57,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:57,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:57,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:57,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:45:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:57,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:45:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:57,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:57,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14605606] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:57,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:57,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:45:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583410409] [2022-10-16 17:45:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:57,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:45:57,641 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:57,784 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 17:45:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:57,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-10-16 17:45:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:57,787 INFO L225 Difference]: With dead ends: 111 [2022-10-16 17:45:57,787 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:45:57,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:45:57,797 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:57,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:45:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-10-16 17:45:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-10-16 17:45:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:45:57,840 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-10-16 17:45:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:57,841 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:45:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:45:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:45:57,846 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:57,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:57,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:58,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:45:58,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-10-16 17:45:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:58,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031231010] [2022-10-16 17:45:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:45:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:45:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:58,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031231010] [2022-10-16 17:45:58,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031231010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:58,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:58,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:58,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367231019] [2022-10-16 17:45:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:58,187 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:58,236 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:45:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:58,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-16 17:45:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:58,238 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:45:58,239 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 17:45:58,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:58,240 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:58,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 17:45:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-10-16 17:45:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:45:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-10-16 17:45:58,254 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-10-16 17:45:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:58,254 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-10-16 17:45:58,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-10-16 17:45:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 17:45:58,256 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:58,256 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:58,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:45:58,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:58,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:58,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-10-16 17:45:58,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:58,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578216018] [2022-10-16 17:45:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:45:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:45:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:58,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578216018] [2022-10-16 17:45:58,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578216018] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:58,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:45:58,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:45:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494061976] [2022-10-16 17:45:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:45:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:45:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:58,387 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:58,422 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-10-16 17:45:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:45:58,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-16 17:45:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:58,424 INFO L225 Difference]: With dead ends: 85 [2022-10-16 17:45:58,424 INFO L226 Difference]: Without dead ends: 83 [2022-10-16 17:45:58,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:45:58,426 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:58,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:45:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-16 17:45:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-10-16 17:45:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2022-10-16 17:45:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-10-16 17:45:58,438 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-10-16 17:45:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:58,439 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-10-16 17:45:58,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:45:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-10-16 17:45:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 17:45:58,441 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:58,441 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:58,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 17:45:58,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-10-16 17:45:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:58,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991603228] [2022-10-16 17:45:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 17:45:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:45:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 17:45:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 17:45:58,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:58,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991603228] [2022-10-16 17:45:58,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991603228] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:58,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119020331] [2022-10-16 17:45:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:58,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:58,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:58,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:45:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:58,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:45:58,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:45:58,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:45:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119020331] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:45:58,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:45:58,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-16 17:45:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034250931] [2022-10-16 17:45:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:45:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:45:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:45:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:45:58,690 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:45:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:58,798 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-10-16 17:45:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:45:58,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-10-16 17:45:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:58,800 INFO L225 Difference]: With dead ends: 141 [2022-10-16 17:45:58,801 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 17:45:58,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:45:58,803 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:58,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 152 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:45:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 17:45:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-10-16 17:45:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2022-10-16 17:45:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-10-16 17:45:58,814 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-10-16 17:45:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:58,814 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-10-16 17:45:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:45:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-10-16 17:45:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:45:58,816 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:58,816 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:58,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:45:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-16 17:45:59,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:45:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:45:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-10-16 17:45:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:45:59,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200002528] [2022-10-16 17:45:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:45:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:45:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:45:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:45:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:45:59,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200002528] [2022-10-16 17:45:59,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200002528] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:45:59,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214221107] [2022-10-16 17:45:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:45:59,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:45:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:45:59,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:45:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:45:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:45:59,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:45:59,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:45:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:45:59,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:45:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:45:59,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214221107] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:45:59,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:45:59,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-10-16 17:45:59,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212471527] [2022-10-16 17:45:59,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:45:59,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 17:45:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:45:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 17:45:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:45:59,424 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:45:59,932 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2022-10-16 17:45:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:45:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-10-16 17:45:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:45:59,935 INFO L225 Difference]: With dead ends: 202 [2022-10-16 17:45:59,935 INFO L226 Difference]: Without dead ends: 137 [2022-10-16 17:45:59,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-10-16 17:45:59,937 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 143 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:45:59,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:45:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-16 17:45:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-10-16 17:45:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:45:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-10-16 17:45:59,952 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-10-16 17:45:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:45:59,953 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-10-16 17:45:59,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:45:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-10-16 17:45:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 17:45:59,955 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:45:59,955 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:45:59,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:00,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-10-16 17:46:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:00,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159434369] [2022-10-16 17:46:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:46:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:46:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:00,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159434369] [2022-10-16 17:46:00,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159434369] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:00,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424761555] [2022-10-16 17:46:00,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:00,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:00,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:00,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:46:00,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:00,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:00,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:00,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:46:00,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:00,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424761555] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:00,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:00,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:00,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343791911] [2022-10-16 17:46:00,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:00,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:00,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:00,382 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:00,413 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2022-10-16 17:46:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-16 17:46:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:00,416 INFO L225 Difference]: With dead ends: 132 [2022-10-16 17:46:00,416 INFO L226 Difference]: Without dead ends: 131 [2022-10-16 17:46:00,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:00,418 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:00,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-16 17:46:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2022-10-16 17:46:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2022-10-16 17:46:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-10-16 17:46:00,433 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-10-16 17:46:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:00,434 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-10-16 17:46:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-10-16 17:46:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 17:46:00,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:00,435 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:00,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:00,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-10-16 17:46:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495512292] [2022-10-16 17:46:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-16 17:46:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 17:46:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 17:46:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:00,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495512292] [2022-10-16 17:46:00,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495512292] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:00,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351027445] [2022-10-16 17:46:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:00,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:00,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:00,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:46:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:00,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:46:00,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:00,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351027445] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:01,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:01,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-10-16 17:46:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085944545] [2022-10-16 17:46:01,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:46:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:46:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:46:01,231 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:02,048 INFO L93 Difference]: Finished difference Result 353 states and 473 transitions. [2022-10-16 17:46:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 17:46:02,049 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-10-16 17:46:02,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:02,052 INFO L225 Difference]: With dead ends: 353 [2022-10-16 17:46:02,052 INFO L226 Difference]: Without dead ends: 243 [2022-10-16 17:46:02,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:46:02,055 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 252 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:02,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1061 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:46:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-16 17:46:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2022-10-16 17:46:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 171 states have (on average 1.1578947368421053) internal successors, (198), 174 states have internal predecessors, (198), 29 states have call successors, (29), 12 states have call predecessors, (29), 15 states have return successors, (48), 32 states have call predecessors, (48), 28 states have call successors, (48) [2022-10-16 17:46:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 275 transitions. [2022-10-16 17:46:02,076 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 275 transitions. Word has length 43 [2022-10-16 17:46:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:02,077 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 275 transitions. [2022-10-16 17:46:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 19 states have internal predecessors, (82), 13 states have call successors, (16), 10 states have call predecessors, (16), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 275 transitions. [2022-10-16 17:46:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 17:46:02,078 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:02,079 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:02,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:02,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 17:46:02,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash 512153854, now seen corresponding path program 1 times [2022-10-16 17:46:02,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:02,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634157452] [2022-10-16 17:46:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-16 17:46:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 17:46:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-16 17:46:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:02,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634157452] [2022-10-16 17:46:02,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634157452] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:02,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190367356] [2022-10-16 17:46:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:02,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:02,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:02,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:46:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:02,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 17:46:02,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:02,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:03,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190367356] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:03,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:03,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 23] total 47 [2022-10-16 17:46:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603143486] [2022-10-16 17:46:03,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:03,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-10-16 17:46:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-10-16 17:46:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 17:46:03,432 INFO L87 Difference]: Start difference. First operand 219 states and 275 transitions. Second operand has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:05,082 INFO L93 Difference]: Finished difference Result 681 states and 909 transitions. [2022-10-16 17:46:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 17:46:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2022-10-16 17:46:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:05,087 INFO L225 Difference]: With dead ends: 681 [2022-10-16 17:46:05,087 INFO L226 Difference]: Without dead ends: 483 [2022-10-16 17:46:05,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=567, Invalid=3855, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:46:05,093 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 617 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:05,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 2028 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:46:05,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-10-16 17:46:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 436. [2022-10-16 17:46:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 345 states have (on average 1.1594202898550725) internal successors, (400), 347 states have internal predecessors, (400), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 62 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:46:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 539 transitions. [2022-10-16 17:46:05,130 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 539 transitions. Word has length 72 [2022-10-16 17:46:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:05,131 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 539 transitions. [2022-10-16 17:46:05,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.8666666666666667) internal successors, (129), 29 states have internal predecessors, (129), 23 states have call successors, (26), 20 states have call predecessors, (26), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 539 transitions. [2022-10-16 17:46:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:46:05,133 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:05,133 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:05,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:05,350 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1802141276, now seen corresponding path program 2 times [2022-10-16 17:46:05,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:05,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273507662] [2022-10-16 17:46:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:05,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:46:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:46:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:46:05,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:05,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273507662] [2022-10-16 17:46:05,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273507662] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:05,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266479863] [2022-10-16 17:46:05,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:05,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:05,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:05,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:05,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:46:05,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:05,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:05,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:46:05,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:46:05,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:05,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266479863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:05,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:05,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-16 17:46:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368487140] [2022-10-16 17:46:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:05,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:05,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:05,691 INFO L87 Difference]: Start difference. First operand 436 states and 539 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:05,734 INFO L93 Difference]: Finished difference Result 447 states and 552 transitions. [2022-10-16 17:46:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:05,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 120 [2022-10-16 17:46:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:05,739 INFO L225 Difference]: With dead ends: 447 [2022-10-16 17:46:05,739 INFO L226 Difference]: Without dead ends: 446 [2022-10-16 17:46:05,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:46:05,741 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-16 17:46:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2022-10-16 17:46:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 349 states have (on average 1.157593123209169) internal successors, (404), 349 states have internal predecessors, (404), 58 states have call successors, (58), 26 states have call predecessors, (58), 29 states have return successors, (81), 64 states have call predecessors, (81), 57 states have call successors, (81) [2022-10-16 17:46:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 543 transitions. [2022-10-16 17:46:05,783 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 543 transitions. Word has length 120 [2022-10-16 17:46:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:05,785 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 543 transitions. [2022-10-16 17:46:05,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 543 transitions. [2022-10-16 17:46:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:46:05,793 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:05,794 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:05,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:06,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -31804611, now seen corresponding path program 1 times [2022-10-16 17:46:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214171351] [2022-10-16 17:46:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-16 17:46:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 17:46:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-10-16 17:46:06,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:06,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214171351] [2022-10-16 17:46:06,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214171351] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:06,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659842788] [2022-10-16 17:46:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:06,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:06,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:06,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:06,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:46:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 17:46:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 20 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:46:07,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:46:08,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659842788] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:08,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:08,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 39, 39] total 57 [2022-10-16 17:46:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858570514] [2022-10-16 17:46:08,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:08,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-16 17:46:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-16 17:46:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2824, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:46:08,034 INFO L87 Difference]: Start difference. First operand 440 states and 543 transitions. Second operand has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:10,411 INFO L93 Difference]: Finished difference Result 1119 states and 1430 transitions. [2022-10-16 17:46:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-10-16 17:46:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 121 [2022-10-16 17:46:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:10,417 INFO L225 Difference]: With dead ends: 1119 [2022-10-16 17:46:10,417 INFO L226 Difference]: Without dead ends: 700 [2022-10-16 17:46:10,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 195 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=857, Invalid=5785, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:46:10,425 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 803 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:10,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 2870 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:46:10,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-10-16 17:46:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 639. [2022-10-16 17:46:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 508 states have (on average 1.1633858267716535) internal successors, (591), 509 states have internal predecessors, (591), 84 states have call successors, (84), 40 states have call predecessors, (84), 43 states have return successors, (101), 89 states have call predecessors, (101), 83 states have call successors, (101) [2022-10-16 17:46:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2022-10-16 17:46:10,508 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 121 [2022-10-16 17:46:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:10,508 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2022-10-16 17:46:10,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 34 states have internal predecessors, (157), 28 states have call successors, (32), 25 states have call predecessors, (32), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:46:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2022-10-16 17:46:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-10-16 17:46:10,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:10,511 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:10,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:46:10,726 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 305836501, now seen corresponding path program 1 times [2022-10-16 17:46:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:10,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235007147] [2022-10-16 17:46:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 17:46:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-10-16 17:46:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235007147] [2022-10-16 17:46:10,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235007147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:10,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:10,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673627542] [2022-10-16 17:46:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:10,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:10,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:10,931 INFO L87 Difference]: Start difference. First operand 639 states and 776 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:10,982 INFO L93 Difference]: Finished difference Result 652 states and 789 transitions. [2022-10-16 17:46:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:10,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 163 [2022-10-16 17:46:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:10,987 INFO L225 Difference]: With dead ends: 652 [2022-10-16 17:46:10,988 INFO L226 Difference]: Without dead ends: 650 [2022-10-16 17:46:10,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:10,989 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:10,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-10-16 17:46:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 635. [2022-10-16 17:46:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.1643564356435643) internal successors, (588), 506 states have internal predecessors, (588), 83 states have call successors, (83), 40 states have call predecessors, (83), 43 states have return successors, (98), 88 states have call predecessors, (98), 82 states have call successors, (98) [2022-10-16 17:46:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 769 transitions. [2022-10-16 17:46:11,029 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 769 transitions. Word has length 163 [2022-10-16 17:46:11,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:11,030 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 769 transitions. [2022-10-16 17:46:11,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:46:11,030 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 769 transitions. [2022-10-16 17:46:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-10-16 17:46:11,032 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:11,033 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:11,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 17:46:11,033 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1743217885, now seen corresponding path program 1 times [2022-10-16 17:46:11,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:11,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859601664] [2022-10-16 17:46:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:11,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-10-16 17:46:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-10-16 17:46:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2022-10-16 17:46:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:11,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859601664] [2022-10-16 17:46:11,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859601664] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:11,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853028459] [2022-10-16 17:46:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:11,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:11,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:46:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:11,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 54 conjunts are in the unsatisfiable core [2022-10-16 17:46:11,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:46:12,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:12,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853028459] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:12,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:12,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4] total 58 [2022-10-16 17:46:12,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174773347] [2022-10-16 17:46:12,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-16 17:46:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:12,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-16 17:46:12,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=2880, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:12,454 INFO L87 Difference]: Start difference. First operand 635 states and 769 transitions. Second operand has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:46:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:14,839 INFO L93 Difference]: Finished difference Result 3341 states and 4394 transitions. [2022-10-16 17:46:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-10-16 17:46:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2022-10-16 17:46:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:14,858 INFO L225 Difference]: With dead ends: 3341 [2022-10-16 17:46:14,859 INFO L226 Difference]: Without dead ends: 2727 [2022-10-16 17:46:14,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1862, Invalid=9480, Unknown=0, NotChecked=0, Total=11342 [2022-10-16 17:46:14,873 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1228 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:14,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 549 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 17:46:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-10-16 17:46:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2681. [2022-10-16 17:46:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2141 states have (on average 1.165810368986455) internal successors, (2496), 2129 states have internal predecessors, (2496), 341 states have call successors, (341), 163 states have call predecessors, (341), 195 states have return successors, (467), 388 states have call predecessors, (467), 340 states have call successors, (467) [2022-10-16 17:46:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3304 transitions. [2022-10-16 17:46:15,029 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3304 transitions. Word has length 192 [2022-10-16 17:46:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:15,029 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 3304 transitions. [2022-10-16 17:46:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.8333333333333335) internal successors, (153), 29 states have internal predecessors, (153), 27 states have call successors, (30), 27 states have call predecessors, (30), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:46:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3304 transitions. [2022-10-16 17:46:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-10-16 17:46:15,032 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:15,032 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:15,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:15,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:46:15,246 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash 625782759, now seen corresponding path program 2 times [2022-10-16 17:46:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:15,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483766631] [2022-10-16 17:46:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-16 17:46:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-10-16 17:46:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483766631] [2022-10-16 17:46:15,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483766631] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998517913] [2022-10-16 17:46:15,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:46:15,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:15,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:15,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:46:15,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:46:15,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:46:15,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 52 conjunts are in the unsatisfiable core [2022-10-16 17:46:15,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 124 proven. 816 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:46:16,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 0 proven. 939 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:17,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998517913] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:17,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:17,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 53, 53] total 57 [2022-10-16 17:46:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074540211] [2022-10-16 17:46:17,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:17,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-16 17:46:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-16 17:46:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2802, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:46:17,866 INFO L87 Difference]: Start difference. First operand 2681 states and 3304 transitions. Second operand has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:46:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:20,344 INFO L93 Difference]: Finished difference Result 5534 states and 7118 transitions. [2022-10-16 17:46:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:46:20,345 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 180 [2022-10-16 17:46:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:20,367 INFO L225 Difference]: With dead ends: 5534 [2022-10-16 17:46:20,367 INFO L226 Difference]: Without dead ends: 2992 [2022-10-16 17:46:20,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 290 SyntacticMatches, 50 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=912, Invalid=5730, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 17:46:20,388 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 728 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:20,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3031 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 17:46:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2022-10-16 17:46:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2887. [2022-10-16 17:46:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2308 states have (on average 1.160311958405546) internal successors, (2678), 2287 states have internal predecessors, (2678), 373 states have call successors, (373), 171 states have call predecessors, (373), 202 states have return successors, (547), 428 states have call predecessors, (547), 372 states have call successors, (547) [2022-10-16 17:46:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3598 transitions. [2022-10-16 17:46:20,586 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3598 transitions. Word has length 180 [2022-10-16 17:46:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:20,587 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3598 transitions. [2022-10-16 17:46:20,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.107142857142857) internal successors, (174), 33 states have internal predecessors, (174), 28 states have call successors, (34), 26 states have call predecessors, (34), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:46:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3598 transitions. [2022-10-16 17:46:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-10-16 17:46:20,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:20,591 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:20,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:20,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 17:46:20,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:20,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -830948464, now seen corresponding path program 1 times [2022-10-16 17:46:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:20,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36057313] [2022-10-16 17:46:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-10-16 17:46:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 17:46:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 795 proven. 159 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:46:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:22,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36057313] [2022-10-16 17:46:22,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36057313] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:22,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000852910] [2022-10-16 17:46:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:22,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:22,731 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:46:22,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:46:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 52 conjunts are in the unsatisfiable core [2022-10-16 17:46:22,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 796 proven. 156 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:23,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 796 proven. 156 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:46:24,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000852910] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:24,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:24,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 53, 53] total 58 [2022-10-16 17:46:24,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416275209] [2022-10-16 17:46:24,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:24,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:24,172 INFO L87 Difference]: Start difference. First operand 2887 states and 3598 transitions. Second operand has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:46:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:28,195 INFO L93 Difference]: Finished difference Result 6083 states and 8066 transitions. [2022-10-16 17:46:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-16 17:46:28,195 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 181 [2022-10-16 17:46:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:28,219 INFO L225 Difference]: With dead ends: 6083 [2022-10-16 17:46:28,219 INFO L226 Difference]: Without dead ends: 3310 [2022-10-16 17:46:28,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 361 SyntacticMatches, 50 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3151, Invalid=14405, Unknown=0, NotChecked=0, Total=17556 [2022-10-16 17:46:28,246 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1826 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 4442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:28,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 586 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 3690 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 17:46:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2022-10-16 17:46:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3064. [2022-10-16 17:46:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2441 states have (on average 1.1601802539942647) internal successors, (2832), 2434 states have internal predecessors, (2832), 400 states have call successors, (400), 183 states have call predecessors, (400), 219 states have return successors, (579), 446 states have call predecessors, (579), 399 states have call successors, (579) [2022-10-16 17:46:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 3811 transitions. [2022-10-16 17:46:28,419 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 3811 transitions. Word has length 181 [2022-10-16 17:46:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:28,420 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 3811 transitions. [2022-10-16 17:46:28,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.8421052631578947) internal successors, (162), 34 states have internal predecessors, (162), 28 states have call successors, (30), 25 states have call predecessors, (30), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:46:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 3811 transitions. [2022-10-16 17:46:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-10-16 17:46:28,426 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:28,426 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:28,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:28,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:28,641 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash -490691545, now seen corresponding path program 1 times [2022-10-16 17:46:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657274510] [2022-10-16 17:46:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2022-10-16 17:46:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657274510] [2022-10-16 17:46:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657274510] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047387645] [2022-10-16 17:46:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:28,788 INFO L87 Difference]: Start difference. First operand 3064 states and 3811 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:28,936 INFO L93 Difference]: Finished difference Result 3106 states and 3868 transitions. [2022-10-16 17:46:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-10-16 17:46:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:28,957 INFO L225 Difference]: With dead ends: 3106 [2022-10-16 17:46:28,958 INFO L226 Difference]: Without dead ends: 3102 [2022-10-16 17:46:28,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:28,961 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:28,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-10-16 17:46:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3054. [2022-10-16 17:46:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 2431 states have (on average 1.1608391608391608) internal successors, (2822), 2433 states have internal predecessors, (2822), 400 states have call successors, (400), 183 states have call predecessors, (400), 219 states have return successors, (573), 437 states have call predecessors, (573), 399 states have call successors, (573) [2022-10-16 17:46:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 3795 transitions. [2022-10-16 17:46:29,173 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 3795 transitions. Word has length 176 [2022-10-16 17:46:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,174 INFO L495 AbstractCegarLoop]: Abstraction has 3054 states and 3795 transitions. [2022-10-16 17:46:29,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 3795 transitions. [2022-10-16 17:46:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-10-16 17:46:29,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,177 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 17:46:29,177 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -479743897, now seen corresponding path program 1 times [2022-10-16 17:46:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759067673] [2022-10-16 17:46:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-10-16 17:46:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:29,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759067673] [2022-10-16 17:46:29,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759067673] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:29,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:29,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 17:46:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956930369] [2022-10-16 17:46:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 17:46:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 17:46:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:46:29,455 INFO L87 Difference]: Start difference. First operand 3054 states and 3795 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 17:46:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:29,641 INFO L93 Difference]: Finished difference Result 3406 states and 4308 transitions. [2022-10-16 17:46:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:46:29,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 176 [2022-10-16 17:46:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:29,664 INFO L225 Difference]: With dead ends: 3406 [2022-10-16 17:46:29,664 INFO L226 Difference]: Without dead ends: 3405 [2022-10-16 17:46:29,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:46:29,668 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:29,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 326 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2022-10-16 17:46:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3214. [2022-10-16 17:46:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 2563 states have (on average 1.1525555989075302) internal successors, (2954), 2548 states have internal predecessors, (2954), 414 states have call successors, (414), 183 states have call predecessors, (414), 233 states have return successors, (664), 482 states have call predecessors, (664), 413 states have call successors, (664) [2022-10-16 17:46:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 4032 transitions. [2022-10-16 17:46:29,875 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 4032 transitions. Word has length 176 [2022-10-16 17:46:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:29,876 INFO L495 AbstractCegarLoop]: Abstraction has 3214 states and 4032 transitions. [2022-10-16 17:46:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 17:46:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 4032 transitions. [2022-10-16 17:46:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-10-16 17:46:29,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:29,880 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-16 17:46:29,880 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1987158822, now seen corresponding path program 1 times [2022-10-16 17:46:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615826780] [2022-10-16 17:46:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-10-16 17:46:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:30,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615826780] [2022-10-16 17:46:30,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615826780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:30,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:46:30,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:46:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173777111] [2022-10-16 17:46:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:46:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:46:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:30,022 INFO L87 Difference]: Start difference. First operand 3214 states and 4032 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:30,139 INFO L93 Difference]: Finished difference Result 3285 states and 4131 transitions. [2022-10-16 17:46:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:46:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 177 [2022-10-16 17:46:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:30,162 INFO L225 Difference]: With dead ends: 3285 [2022-10-16 17:46:30,162 INFO L226 Difference]: Without dead ends: 3281 [2022-10-16 17:46:30,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:46:30,165 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:30,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 150 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:46:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-10-16 17:46:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3180. [2022-10-16 17:46:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2536 states have (on average 1.1597003154574133) internal successors, (2941), 2524 states have internal predecessors, (2941), 407 states have call successors, (407), 183 states have call predecessors, (407), 233 states have return successors, (649), 472 states have call predecessors, (649), 406 states have call successors, (649) [2022-10-16 17:46:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 3997 transitions. [2022-10-16 17:46:30,344 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 3997 transitions. Word has length 177 [2022-10-16 17:46:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:30,344 INFO L495 AbstractCegarLoop]: Abstraction has 3180 states and 3997 transitions. [2022-10-16 17:46:30,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:46:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 3997 transitions. [2022-10-16 17:46:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-10-16 17:46:30,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:30,348 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 17:46:30,348 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash 424681697, now seen corresponding path program 1 times [2022-10-16 17:46:30,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:30,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101350036] [2022-10-16 17:46:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-10-16 17:46:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 10 proven. 906 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:46:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:31,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101350036] [2022-10-16 17:46:31,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101350036] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:31,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475230548] [2022-10-16 17:46:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:31,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:31,963 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) [2022-10-16 17:46:31,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:46:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:32,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:46:32,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 60 proven. 872 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:46:32,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 13 proven. 909 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 17:46:33,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475230548] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:33,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:33,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 51, 51] total 58 [2022-10-16 17:46:33,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783977020] [2022-10-16 17:46:33,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:33,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:46:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:46:33,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:46:33,366 INFO L87 Difference]: Start difference. First operand 3180 states and 3997 transitions. Second operand has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:35,524 INFO L93 Difference]: Finished difference Result 6333 states and 8318 transitions. [2022-10-16 17:46:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:46:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 189 [2022-10-16 17:46:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:35,551 INFO L225 Difference]: With dead ends: 6333 [2022-10-16 17:46:35,551 INFO L226 Difference]: Without dead ends: 3316 [2022-10-16 17:46:35,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 363 SyntacticMatches, 47 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3101 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=936, Invalid=5870, Unknown=0, NotChecked=0, Total=6806 [2022-10-16 17:46:35,574 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 926 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:35,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 2188 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:46:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-10-16 17:46:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3184. [2022-10-16 17:46:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2539 states have (on average 1.1595116187475385) internal successors, (2944), 2527 states have internal predecessors, (2944), 408 states have call successors, (408), 183 states have call predecessors, (408), 233 states have return successors, (622), 473 states have call predecessors, (622), 407 states have call successors, (622) [2022-10-16 17:46:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3974 transitions. [2022-10-16 17:46:35,816 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3974 transitions. Word has length 189 [2022-10-16 17:46:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:35,817 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 3974 transitions. [2022-10-16 17:46:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.245614035087719) internal successors, (185), 36 states have internal predecessors, (185), 29 states have call successors, (35), 24 states have call predecessors, (35), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3974 transitions. [2022-10-16 17:46:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-16 17:46:35,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:35,823 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:35,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:36,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 17:46:36,037 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash -22977778, now seen corresponding path program 1 times [2022-10-16 17:46:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:36,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237198891] [2022-10-16 17:46:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:46:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:37,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:37,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237198891] [2022-10-16 17:46:37,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237198891] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:37,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691723307] [2022-10-16 17:46:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:37,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:37,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:37,583 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) [2022-10-16 17:46:37,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:46:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:37,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:46:37,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:37,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 17 proven. 913 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:46:38,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691723307] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:38,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:38,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 51 [2022-10-16 17:46:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338620462] [2022-10-16 17:46:38,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:38,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-16 17:46:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-16 17:46:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=2216, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 17:46:38,791 INFO L87 Difference]: Start difference. First operand 3184 states and 3974 transitions. Second operand has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 17:46:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:40,701 INFO L93 Difference]: Finished difference Result 6245 states and 7997 transitions. [2022-10-16 17:46:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:46:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 190 [2022-10-16 17:46:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:40,727 INFO L225 Difference]: With dead ends: 6245 [2022-10-16 17:46:40,727 INFO L226 Difference]: Without dead ends: 3231 [2022-10-16 17:46:40,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 365 SyntacticMatches, 46 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2566 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=791, Invalid=4611, Unknown=0, NotChecked=0, Total=5402 [2022-10-16 17:46:40,745 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 745 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:40,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2502 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 17:46:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2022-10-16 17:46:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3184. [2022-10-16 17:46:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2539 states have (on average 1.159117762898779) internal successors, (2943), 2527 states have internal predecessors, (2943), 408 states have call successors, (408), 183 states have call predecessors, (408), 233 states have return successors, (615), 473 states have call predecessors, (615), 407 states have call successors, (615) [2022-10-16 17:46:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 3966 transitions. [2022-10-16 17:46:40,914 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 3966 transitions. Word has length 190 [2022-10-16 17:46:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:40,915 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 3966 transitions. [2022-10-16 17:46:40,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.08) internal successors, (154), 29 states have internal predecessors, (154), 24 states have call successors, (28), 23 states have call predecessors, (28), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 17:46:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 3966 transitions. [2022-10-16 17:46:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-10-16 17:46:40,917 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:40,917 INFO L195 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:40,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 17:46:41,131 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -273437198, now seen corresponding path program 1 times [2022-10-16 17:46:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:41,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388658008] [2022-10-16 17:46:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 740 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:46:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388658008] [2022-10-16 17:46:42,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388658008] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434910223] [2022-10-16 17:46:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:42,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:42,674 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) [2022-10-16 17:46:42,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:46:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:42,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:46:42,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-10-16 17:46:43,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:46:43,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434910223] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:46:43,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:46:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [53] total 63 [2022-10-16 17:46:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607658569] [2022-10-16 17:46:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:46:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:46:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:46:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:46:43,078 INFO L87 Difference]: Start difference. First operand 3184 states and 3966 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:43,310 INFO L93 Difference]: Finished difference Result 3815 states and 5014 transitions. [2022-10-16 17:46:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:46:43,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 194 [2022-10-16 17:46:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:43,327 INFO L225 Difference]: With dead ends: 3815 [2022-10-16 17:46:43,327 INFO L226 Difference]: Without dead ends: 3814 [2022-10-16 17:46:43,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=377, Invalid=3529, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:46:43,331 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:43,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 325 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:46:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2022-10-16 17:46:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3549. [2022-10-16 17:46:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2832 states have (on average 1.1500706214689265) internal successors, (3257), 2803 states have internal predecessors, (3257), 444 states have call successors, (444), 183 states have call predecessors, (444), 269 states have return successors, (912), 562 states have call predecessors, (912), 443 states have call successors, (912) [2022-10-16 17:46:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4613 transitions. [2022-10-16 17:46:43,526 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4613 transitions. Word has length 194 [2022-10-16 17:46:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:43,527 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 4613 transitions. [2022-10-16 17:46:43,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:46:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4613 transitions. [2022-10-16 17:46:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-10-16 17:46:43,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:43,529 INFO L195 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:43,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:43,744 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 113381551, now seen corresponding path program 1 times [2022-10-16 17:46:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:43,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464966031] [2022-10-16 17:46:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 17:46:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 17:46:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:46:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 740 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 17:46:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464966031] [2022-10-16 17:46:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464966031] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:45,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775336919] [2022-10-16 17:46:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:45,275 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) [2022-10-16 17:46:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:46:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:46:45,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2022-10-16 17:46:45,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-10-16 17:46:45,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775336919] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:45,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:45,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 8, 7] total 65 [2022-10-16 17:46:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617358169] [2022-10-16 17:46:45,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-16 17:46:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-16 17:46:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3777, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 17:46:45,941 INFO L87 Difference]: Start difference. First operand 3549 states and 4613 transitions. Second operand has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:57,132 INFO L93 Difference]: Finished difference Result 7597 states and 10739 transitions. [2022-10-16 17:46:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-10-16 17:46:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 195 [2022-10-16 17:46:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:57,153 INFO L225 Difference]: With dead ends: 7597 [2022-10-16 17:46:57,153 INFO L226 Difference]: Without dead ends: 4145 [2022-10-16 17:46:57,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 437 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26077 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9454, Invalid=61568, Unknown=0, NotChecked=0, Total=71022 [2022-10-16 17:46:57,177 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1837 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 8729 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 9992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 8729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:57,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 549 Invalid, 9992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1263 Valid, 8729 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-10-16 17:46:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-10-16 17:46:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3555. [2022-10-16 17:46:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2831 states have (on average 1.1462380784175203) internal successors, (3245), 2808 states have internal predecessors, (3245), 445 states have call successors, (445), 183 states have call predecessors, (445), 275 states have return successors, (1014), 563 states have call predecessors, (1014), 444 states have call successors, (1014) [2022-10-16 17:46:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4704 transitions. [2022-10-16 17:46:57,395 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4704 transitions. Word has length 195 [2022-10-16 17:46:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:57,396 INFO L495 AbstractCegarLoop]: Abstraction has 3555 states and 4704 transitions. [2022-10-16 17:46:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.921875) internal successors, (187), 42 states have internal predecessors, (187), 30 states have call successors, (35), 24 states have call predecessors, (35), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-10-16 17:46:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4704 transitions. [2022-10-16 17:46:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-10-16 17:46:57,398 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:57,398 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:57,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:46:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 17:46:57,600 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:46:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:46:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash -105689222, now seen corresponding path program 1 times [2022-10-16 17:46:57,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:46:57,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53605805] [2022-10-16 17:46:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:46:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:46:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:46:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:46:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:46:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:46:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:46:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:46:58,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53605805] [2022-10-16 17:46:58,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53605805] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:46:58,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491215508] [2022-10-16 17:46:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:46:58,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:46:58,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:46:58,098 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) [2022-10-16 17:46:58,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:46:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:46:58,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:46:58,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:46:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:46:58,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:46:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-10-16 17:46:58,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491215508] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:46:58,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:46:58,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-10-16 17:46:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572477847] [2022-10-16 17:46:58,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:46:58,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:46:58,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:46:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:46:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:46:58,877 INFO L87 Difference]: Start difference. First operand 3555 states and 4704 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:59,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:46:59,478 INFO L93 Difference]: Finished difference Result 5368 states and 8395 transitions. [2022-10-16 17:46:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-16 17:46:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 209 [2022-10-16 17:46:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:46:59,505 INFO L225 Difference]: With dead ends: 5368 [2022-10-16 17:46:59,505 INFO L226 Difference]: Without dead ends: 5366 [2022-10-16 17:46:59,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 417 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:46:59,511 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 67 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:46:59,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 606 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:46:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2022-10-16 17:46:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 4374. [2022-10-16 17:46:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 3478 states have (on average 1.1377228292121908) internal successors, (3957), 3439 states have internal predecessors, (3957), 537 states have call successors, (537), 183 states have call predecessors, (537), 355 states have return successors, (2241), 751 states have call predecessors, (2241), 536 states have call successors, (2241) [2022-10-16 17:46:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 6735 transitions. [2022-10-16 17:46:59,843 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 6735 transitions. Word has length 209 [2022-10-16 17:46:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:46:59,844 INFO L495 AbstractCegarLoop]: Abstraction has 4374 states and 6735 transitions. [2022-10-16 17:46:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:46:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 6735 transitions. [2022-10-16 17:46:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-10-16 17:46:59,846 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:46:59,846 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:46:59,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:00,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 17:47:00,062 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:00,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1018601485, now seen corresponding path program 1 times [2022-10-16 17:47:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:00,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155104249] [2022-10-16 17:47:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 17:47:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-10-16 17:47:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 1046 trivial. 0 not checked. [2022-10-16 17:47:00,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155104249] [2022-10-16 17:47:00,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155104249] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628259138] [2022-10-16 17:47:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:00,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:00,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:00,638 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) [2022-10-16 17:47:00,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:47:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:00,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:47:00,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-10-16 17:47:00,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-10-16 17:47:01,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628259138] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:01,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:01,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-10-16 17:47:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167010430] [2022-10-16 17:47:01,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-16 17:47:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-16 17:47:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:47:01,329 INFO L87 Difference]: Start difference. First operand 4374 states and 6735 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:47:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:02,285 INFO L93 Difference]: Finished difference Result 12193 states and 22903 transitions. [2022-10-16 17:47:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-16 17:47:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 210 [2022-10-16 17:47:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:02,367 INFO L225 Difference]: With dead ends: 12193 [2022-10-16 17:47:02,367 INFO L226 Difference]: Without dead ends: 12186 [2022-10-16 17:47:02,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 419 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 17:47:02,383 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 73 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:02,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 651 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:47:02,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12186 states. [2022-10-16 17:47:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12186 to 8717. [2022-10-16 17:47:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8717 states, 6952 states have (on average 1.1301783659378597) internal successors, (7857), 6756 states have internal predecessors, (7857), 943 states have call successors, (943), 183 states have call predecessors, (943), 818 states have return successors, (7509), 1777 states have call predecessors, (7509), 942 states have call successors, (7509) [2022-10-16 17:47:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 16309 transitions. [2022-10-16 17:47:03,237 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 16309 transitions. Word has length 210 [2022-10-16 17:47:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:03,237 INFO L495 AbstractCegarLoop]: Abstraction has 8717 states and 16309 transitions. [2022-10-16 17:47:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-16 17:47:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 16309 transitions. [2022-10-16 17:47:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-10-16 17:47:03,240 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:03,240 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:03,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:47:03,453 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1658340320, now seen corresponding path program 1 times [2022-10-16 17:47:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:03,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871847] [2022-10-16 17:47:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:47:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:47:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:47:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871847] [2022-10-16 17:47:05,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871847] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:05,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888960754] [2022-10-16 17:47:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:05,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:05,012 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) [2022-10-16 17:47:05,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:47:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:05,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:47:05,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:47:05,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 66 proven. 1117 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 17:47:06,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888960754] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:06,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:06,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 54 [2022-10-16 17:47:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329482246] [2022-10-16 17:47:06,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:47:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:47:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2524, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:47:06,348 INFO L87 Difference]: Start difference. First operand 8717 states and 16309 transitions. Second operand has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-16 17:47:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:09,193 INFO L93 Difference]: Finished difference Result 19148 states and 39004 transitions. [2022-10-16 17:47:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 17:47:09,193 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 243 [2022-10-16 17:47:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:09,280 INFO L225 Difference]: With dead ends: 19148 [2022-10-16 17:47:09,280 INFO L226 Difference]: Without dead ends: 10608 [2022-10-16 17:47:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 481 SyntacticMatches, 45 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2626 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=791, Invalid=4909, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:47:09,347 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 671 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:09,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 3234 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:47:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2022-10-16 17:47:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 10443. [2022-10-16 17:47:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 8335 states have (on average 1.1241751649670066) internal successors, (9370), 8079 states have internal predecessors, (9370), 1100 states have call successors, (1100), 198 states have call predecessors, (1100), 1004 states have return successors, (10418), 2165 states have call predecessors, (10418), 1099 states have call successors, (10418) [2022-10-16 17:47:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 20888 transitions. [2022-10-16 17:47:10,430 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 20888 transitions. Word has length 243 [2022-10-16 17:47:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:10,431 INFO L495 AbstractCegarLoop]: Abstraction has 10443 states and 20888 transitions. [2022-10-16 17:47:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.30188679245283) internal successors, (175), 33 states have internal predecessors, (175), 28 states have call successors, (32), 22 states have call predecessors, (32), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-10-16 17:47:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 20888 transitions. [2022-10-16 17:47:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-10-16 17:47:10,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:10,435 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 17, 15, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:10,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:47:10,650 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 708610727, now seen corresponding path program 2 times [2022-10-16 17:47:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557275769] [2022-10-16 17:47:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:47:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:47:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 17:47:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:47:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-16 17:47:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 719 proven. 680 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-10-16 17:47:12,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:12,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557275769] [2022-10-16 17:47:12,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557275769] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590370026] [2022-10-16 17:47:12,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:47:12,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:12,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:12,502 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) [2022-10-16 17:47:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:47:12,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:47:12,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:12,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:47:12,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 726 proven. 684 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-10-16 17:47:12,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 726 proven. 685 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-10-16 17:47:14,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590370026] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:14,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:14,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50, 51] total 57 [2022-10-16 17:47:14,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94616076] [2022-10-16 17:47:14,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:14,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-10-16 17:47:14,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-10-16 17:47:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2859, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 17:47:14,207 INFO L87 Difference]: Start difference. First operand 10443 states and 20888 transitions. Second operand has 57 states, 56 states have (on average 3.607142857142857) internal successors, (202), 36 states have internal predecessors, (202), 30 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:47:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:19,644 INFO L93 Difference]: Finished difference Result 15149 states and 30813 transitions. [2022-10-16 17:47:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-10-16 17:47:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.607142857142857) internal successors, (202), 36 states have internal predecessors, (202), 30 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 280 [2022-10-16 17:47:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:19,675 INFO L225 Difference]: With dead ends: 15149 [2022-10-16 17:47:19,675 INFO L226 Difference]: Without dead ends: 4875 [2022-10-16 17:47:19,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 571 SyntacticMatches, 46 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9679 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4112, Invalid=20694, Unknown=0, NotChecked=0, Total=24806 [2022-10-16 17:47:19,767 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3017 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:19,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3017 Valid, 558 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 4063 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 17:47:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2022-10-16 17:47:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4299. [2022-10-16 17:47:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 3405 states have (on average 1.0778267254038179) internal successors, (3670), 3397 states have internal predecessors, (3670), 526 states have call successors, (526), 216 states have call predecessors, (526), 366 states have return successors, (1439), 685 states have call predecessors, (1439), 525 states have call successors, (1439) [2022-10-16 17:47:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 5635 transitions. [2022-10-16 17:47:20,033 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 5635 transitions. Word has length 280 [2022-10-16 17:47:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:20,034 INFO L495 AbstractCegarLoop]: Abstraction has 4299 states and 5635 transitions. [2022-10-16 17:47:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.607142857142857) internal successors, (202), 36 states have internal predecessors, (202), 30 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-10-16 17:47:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 5635 transitions. [2022-10-16 17:47:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-10-16 17:47:20,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:20,037 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 16, 16, 14, 14, 14, 14, 13, 13, 13, 13, 8, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:47:20,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:20,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:20,251 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:20,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash -915590142, now seen corresponding path program 3 times [2022-10-16 17:47:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:20,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986283976] [2022-10-16 17:47:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-10-16 17:47:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-10-16 17:47:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:47:21,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:21,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986283976] [2022-10-16 17:47:21,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986283976] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:21,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635813655] [2022-10-16 17:47:21,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:47:21,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:21,296 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:21,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:47:21,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:47:21,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 17:47:21,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 1370 trivial. 0 not checked. [2022-10-16 17:47:21,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1471 backedges. 74 proven. 51 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2022-10-16 17:47:22,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635813655] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:22,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-10-16 17:47:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340540068] [2022-10-16 17:47:22,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:22,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:47:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:47:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:47:22,841 INFO L87 Difference]: Start difference. First operand 4299 states and 5635 transitions. Second operand has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:47:23,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:23,587 INFO L93 Difference]: Finished difference Result 7185 states and 10663 transitions. [2022-10-16 17:47:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 17:47:23,589 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 262 [2022-10-16 17:47:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:23,637 INFO L225 Difference]: With dead ends: 7185 [2022-10-16 17:47:23,637 INFO L226 Difference]: Without dead ends: 7183 [2022-10-16 17:47:23,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 528 SyntacticMatches, 16 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=396, Invalid=2466, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:47:23,648 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 70 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:23,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 679 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:47:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2022-10-16 17:47:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 5130. [2022-10-16 17:47:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 4057 states have (on average 1.064333251170816) internal successors, (4318), 4040 states have internal predecessors, (4318), 607 states have call successors, (607), 216 states have call predecessors, (607), 464 states have return successors, (2318), 873 states have call predecessors, (2318), 606 states have call successors, (2318) [2022-10-16 17:47:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 7243 transitions. [2022-10-16 17:47:24,094 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 7243 transitions. Word has length 262 [2022-10-16 17:47:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:24,094 INFO L495 AbstractCegarLoop]: Abstraction has 5130 states and 7243 transitions. [2022-10-16 17:47:24,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-10-16 17:47:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 7243 transitions. [2022-10-16 17:47:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-10-16 17:47:24,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:24,098 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 17, 15, 15, 15, 15, 14, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1] [2022-10-16 17:47:24,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-10-16 17:47:24,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-10-16 17:47:24,313 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1650326026, now seen corresponding path program 2 times [2022-10-16 17:47:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:24,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649046201] [2022-10-16 17:47:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:47:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 17:47:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:47:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 175 proven. 1384 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-10-16 17:47:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649046201] [2022-10-16 17:47:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649046201] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:25,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378157846] [2022-10-16 17:47:25,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:47:25,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:25,775 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:25,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:47:25,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:47:25,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:25,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:47:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 1073 proven. 711 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-16 17:47:27,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 637 proven. 985 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-10-16 17:47:29,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378157846] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:29,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:29,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 51] total 101 [2022-10-16 17:47:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790543375] [2022-10-16 17:47:29,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-10-16 17:47:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-10-16 17:47:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=9362, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 17:47:29,958 INFO L87 Difference]: Start difference. First operand 5130 states and 7243 transitions. Second operand has 101 states, 99 states have (on average 3.484848484848485) internal successors, (345), 61 states have internal predecessors, (345), 54 states have call successors, (66), 42 states have call predecessors, (66), 9 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2022-10-16 17:47:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:44,504 INFO L93 Difference]: Finished difference Result 24545 states and 54411 transitions. [2022-10-16 17:47:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-10-16 17:47:44,504 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 99 states have (on average 3.484848484848485) internal successors, (345), 61 states have internal predecessors, (345), 54 states have call successors, (66), 42 states have call predecessors, (66), 9 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) Word has length 315 [2022-10-16 17:47:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:44,642 INFO L225 Difference]: With dead ends: 24545 [2022-10-16 17:47:44,642 INFO L226 Difference]: Without dead ends: 19242 [2022-10-16 17:47:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 629 SyntacticMatches, 45 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26480 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=5021, Invalid=61285, Unknown=0, NotChecked=0, Total=66306 [2022-10-16 17:47:44,743 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 7031 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 12535 mSolverCounterSat, 4210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7033 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 16745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4210 IncrementalHoareTripleChecker+Valid, 12535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7033 Valid, 3122 Invalid, 16745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4210 Valid, 12535 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-10-16 17:47:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19242 states. [2022-10-16 17:47:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19242 to 17852. [2022-10-16 17:47:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17852 states, 14204 states have (on average 1.0773725711067306) internal successors, (15303), 14079 states have internal predecessors, (15303), 2279 states have call successors, (2279), 871 states have call predecessors, (2279), 1367 states have return successors, (12644), 2901 states have call predecessors, (12644), 2278 states have call successors, (12644) [2022-10-16 17:47:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17852 states to 17852 states and 30226 transitions. [2022-10-16 17:47:46,355 INFO L78 Accepts]: Start accepts. Automaton has 17852 states and 30226 transitions. Word has length 315 [2022-10-16 17:47:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:46,356 INFO L495 AbstractCegarLoop]: Abstraction has 17852 states and 30226 transitions. [2022-10-16 17:47:46,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 99 states have (on average 3.484848484848485) internal successors, (345), 61 states have internal predecessors, (345), 54 states have call successors, (66), 42 states have call predecessors, (66), 9 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2022-10-16 17:47:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17852 states and 30226 transitions. [2022-10-16 17:47:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-10-16 17:47:46,360 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:46,361 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 20, 18, 16, 16, 16, 16, 15, 15, 15, 15, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1] [2022-10-16 17:47:46,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 17:47:46,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:46,570 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash 429614252, now seen corresponding path program 3 times [2022-10-16 17:47:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308313191] [2022-10-16 17:47:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:47:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-10-16 17:47:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 17:47:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 228 proven. 1545 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-10-16 17:47:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:48,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308313191] [2022-10-16 17:47:48,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308313191] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:48,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312269420] [2022-10-16 17:47:48,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:47:48,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:48,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:48,488 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:48,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:47:48,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 17:47:48,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:47:48,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 417 proven. 6 refuted. 0 times theorem prover too weak. 1988 trivial. 0 not checked. [2022-10-16 17:47:48,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 336 proven. 12 refuted. 0 times theorem prover too weak. 2063 trivial. 0 not checked. [2022-10-16 17:47:49,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312269420] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:49,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:49,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 9, 9] total 58 [2022-10-16 17:47:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404734387] [2022-10-16 17:47:49,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:49,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:47:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:49,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:47:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2908, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:47:49,351 INFO L87 Difference]: Start difference. First operand 17852 states and 30226 transitions. Second operand has 58 states, 57 states have (on average 3.491228070175439) internal successors, (199), 38 states have internal predecessors, (199), 28 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) [2022-10-16 17:47:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:52,435 INFO L93 Difference]: Finished difference Result 34982 states and 68476 transitions. [2022-10-16 17:47:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 17:47:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.491228070175439) internal successors, (199), 38 states have internal predecessors, (199), 28 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) Word has length 353 [2022-10-16 17:47:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:52,553 INFO L225 Difference]: With dead ends: 34982 [2022-10-16 17:47:52,553 INFO L226 Difference]: Without dead ends: 17294 [2022-10-16 17:47:52,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 764 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=968, Invalid=5838, Unknown=0, NotChecked=0, Total=6806 [2022-10-16 17:47:52,750 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 770 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:52,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2175 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 17:47:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17294 states. [2022-10-16 17:47:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17294 to 16678. [2022-10-16 17:47:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16678 states, 13261 states have (on average 1.0820450946384135) internal successors, (14349), 13218 states have internal predecessors, (14349), 2141 states have call successors, (2141), 868 states have call predecessors, (2141), 1274 states have return successors, (10028), 2591 states have call predecessors, (10028), 2140 states have call successors, (10028) [2022-10-16 17:47:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16678 states to 16678 states and 26518 transitions. [2022-10-16 17:47:53,978 INFO L78 Accepts]: Start accepts. Automaton has 16678 states and 26518 transitions. Word has length 353 [2022-10-16 17:47:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:53,979 INFO L495 AbstractCegarLoop]: Abstraction has 16678 states and 26518 transitions. [2022-10-16 17:47:53,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.491228070175439) internal successors, (199), 38 states have internal predecessors, (199), 28 states have call successors, (37), 22 states have call predecessors, (37), 6 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) [2022-10-16 17:47:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 16678 states and 26518 transitions. [2022-10-16 17:47:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-10-16 17:47:53,982 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:53,982 INFO L195 NwaCegarLoop]: trace histogram [22, 20, 19, 19, 16, 16, 16, 16, 14, 14, 14, 14, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-10-16 17:47:54,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:54,183 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:47:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1468431451, now seen corresponding path program 4 times [2022-10-16 17:47:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317376827] [2022-10-16 17:47:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:47:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:47:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:47:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:47:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:47:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:47:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:47:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 242 proven. 1477 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-10-16 17:47:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317376827] [2022-10-16 17:47:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317376827] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322464369] [2022-10-16 17:47:56,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:47:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:56,065 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:47:56,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:47:56,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:47:56,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:47:56,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:47:56,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 429 proven. 270 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2022-10-16 17:47:56,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 429 proven. 282 refuted. 0 times theorem prover too weak. 1499 trivial. 0 not checked. [2022-10-16 17:47:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322464369] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:58,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 14, 17] total 69 [2022-10-16 17:47:58,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174440480] [2022-10-16 17:47:58,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:58,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-10-16 17:47:58,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:58,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-10-16 17:47:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=4160, Unknown=0, NotChecked=0, Total=4692 [2022-10-16 17:47:58,126 INFO L87 Difference]: Start difference. First operand 16678 states and 26518 transitions. Second operand has 69 states, 68 states have (on average 3.7941176470588234) internal successors, (258), 49 states have internal predecessors, (258), 38 states have call successors, (46), 21 states have call predecessors, (46), 11 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) [2022-10-16 17:48:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:03,808 INFO L93 Difference]: Finished difference Result 44434 states and 91265 transitions. [2022-10-16 17:48:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-10-16 17:48:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 3.7941176470588234) internal successors, (258), 49 states have internal predecessors, (258), 38 states have call successors, (46), 21 states have call predecessors, (46), 11 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) Word has length 335 [2022-10-16 17:48:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:04,201 INFO L225 Difference]: With dead ends: 44434 [2022-10-16 17:48:04,201 INFO L226 Difference]: Without dead ends: 27877 [2022-10-16 17:48:04,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 709 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1310, Invalid=8392, Unknown=0, NotChecked=0, Total=9702 [2022-10-16 17:48:04,398 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 980 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 6610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:04,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 3152 Invalid, 6610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-16 17:48:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27877 states. [2022-10-16 17:48:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27877 to 26698. [2022-10-16 17:48:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26698 states, 21276 states have (on average 1.0817352885880804) internal successors, (23015), 21152 states have internal predecessors, (23015), 3397 states have call successors, (3397), 1421 states have call predecessors, (3397), 2023 states have return successors, (20096), 4124 states have call predecessors, (20096), 3396 states have call successors, (20096) [2022-10-16 17:48:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26698 states to 26698 states and 46508 transitions. [2022-10-16 17:48:06,272 INFO L78 Accepts]: Start accepts. Automaton has 26698 states and 46508 transitions. Word has length 335 [2022-10-16 17:48:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:06,273 INFO L495 AbstractCegarLoop]: Abstraction has 26698 states and 46508 transitions. [2022-10-16 17:48:06,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 3.7941176470588234) internal successors, (258), 49 states have internal predecessors, (258), 38 states have call successors, (46), 21 states have call predecessors, (46), 11 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) [2022-10-16 17:48:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26698 states and 46508 transitions. [2022-10-16 17:48:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-10-16 17:48:06,276 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:06,276 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 20, 19, 16, 16, 16, 16, 15, 15, 15, 15, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2022-10-16 17:48:06,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:06,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:06,477 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1670911877, now seen corresponding path program 5 times [2022-10-16 17:48:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:06,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244586794] [2022-10-16 17:48:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 17:48:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-10-16 17:48:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-10-16 17:48:08,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:08,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244586794] [2022-10-16 17:48:08,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244586794] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:08,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564791733] [2022-10-16 17:48:08,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:48:08,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:08,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:08,739 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:08,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:48:08,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-10-16 17:48:08,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:08,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 17:48:08,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 2105 trivial. 0 not checked. [2022-10-16 17:48:09,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 218 proven. 155 refuted. 0 times theorem prover too weak. 2056 trivial. 0 not checked. [2022-10-16 17:48:12,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564791733] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:12,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:12,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-10-16 17:48:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421044012] [2022-10-16 17:48:12,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:48:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:48:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:48:12,293 INFO L87 Difference]: Start difference. First operand 26698 states and 46508 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:48:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:14,106 INFO L93 Difference]: Finished difference Result 33126 states and 61227 transitions. [2022-10-16 17:48:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-16 17:48:14,108 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 354 [2022-10-16 17:48:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:14,322 INFO L225 Difference]: With dead ends: 33126 [2022-10-16 17:48:14,322 INFO L226 Difference]: Without dead ends: 33102 [2022-10-16 17:48:14,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 724 SyntacticMatches, 33 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=593, Invalid=3829, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 17:48:14,371 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 92 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:14,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1006 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:48:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33102 states. [2022-10-16 17:48:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33102 to 28371. [2022-10-16 17:48:16,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28371 states, 22610 states have (on average 1.076735957540911) internal successors, (24345), 22426 states have internal predecessors, (24345), 3539 states have call successors, (3539), 1421 states have call predecessors, (3539), 2220 states have return successors, (24289), 4523 states have call predecessors, (24289), 3538 states have call successors, (24289) [2022-10-16 17:48:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28371 states to 28371 states and 52173 transitions. [2022-10-16 17:48:16,752 INFO L78 Accepts]: Start accepts. Automaton has 28371 states and 52173 transitions. Word has length 354 [2022-10-16 17:48:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 28371 states and 52173 transitions. [2022-10-16 17:48:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-10-16 17:48:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 28371 states and 52173 transitions. [2022-10-16 17:48:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-10-16 17:48:16,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:16,758 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 25, 25, 20, 19, 19, 19, 19, 18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 4, 3, 1, 1, 1, 1] [2022-10-16 17:48:16,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:16,959 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:16,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2144556266, now seen corresponding path program 4 times [2022-10-16 17:48:16,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:16,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888276242] [2022-10-16 17:48:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:48:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-10-16 17:48:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 585 proven. 2055 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2022-10-16 17:48:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888276242] [2022-10-16 17:48:19,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888276242] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503131512] [2022-10-16 17:48:19,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:48:19,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:19,166 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:19,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:48:19,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:48:19,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:19,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 17:48:19,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 757 proven. 667 refuted. 0 times theorem prover too weak. 2960 trivial. 0 not checked. [2022-10-16 17:48:19,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4384 backedges. 757 proven. 691 refuted. 0 times theorem prover too weak. 2936 trivial. 0 not checked. [2022-10-16 17:48:22,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503131512] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:22,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:22,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 16, 21] total 70 [2022-10-16 17:48:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383610445] [2022-10-16 17:48:22,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-10-16 17:48:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-10-16 17:48:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=4292, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:48:22,054 INFO L87 Difference]: Start difference. First operand 28371 states and 52173 transitions. Second operand has 70 states, 69 states have (on average 4.057971014492754) internal successors, (280), 51 states have internal predecessors, (280), 42 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (38), 17 states have call predecessors, (38), 23 states have call successors, (38) [2022-10-16 17:48:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:27,502 INFO L93 Difference]: Finished difference Result 52800 states and 106211 transitions. [2022-10-16 17:48:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-10-16 17:48:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.057971014492754) internal successors, (280), 51 states have internal predecessors, (280), 42 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (38), 17 states have call predecessors, (38), 23 states have call successors, (38) Word has length 486 [2022-10-16 17:48:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:27,656 INFO L225 Difference]: With dead ends: 52800 [2022-10-16 17:48:27,656 INFO L226 Difference]: Without dead ends: 24615 [2022-10-16 17:48:27,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1147 GetRequests, 1038 SyntacticMatches, 10 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2693 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1330, Invalid=8770, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 17:48:27,998 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 859 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 5594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:27,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 3008 Invalid, 5594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 17:48:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24615 states. [2022-10-16 17:48:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24615 to 18717. [2022-10-16 17:48:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 14907 states have (on average 1.0713758636882003) internal successors, (15971), 14823 states have internal predecessors, (15971), 2414 states have call successors, (2414), 1007 states have call predecessors, (2414), 1394 states have return successors, (9302), 2886 states have call predecessors, (9302), 2413 states have call successors, (9302) [2022-10-16 17:48:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 27687 transitions. [2022-10-16 17:48:29,328 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 27687 transitions. Word has length 486 [2022-10-16 17:48:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:29,329 INFO L495 AbstractCegarLoop]: Abstraction has 18717 states and 27687 transitions. [2022-10-16 17:48:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.057971014492754) internal successors, (280), 51 states have internal predecessors, (280), 42 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (38), 17 states have call predecessors, (38), 23 states have call successors, (38) [2022-10-16 17:48:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 27687 transitions. [2022-10-16 17:48:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-10-16 17:48:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:29,337 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 26, 25, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2022-10-16 17:48:29,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:29,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 17:48:29,550 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1212102080, now seen corresponding path program 5 times [2022-10-16 17:48:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355326048] [2022-10-16 17:48:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:48:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-10-16 17:48:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4714 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 3766 trivial. 0 not checked. [2022-10-16 17:48:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:33,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355326048] [2022-10-16 17:48:33,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355326048] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:33,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397131918] [2022-10-16 17:48:33,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:48:33,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:33,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:33,619 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:48:33,893 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-10-16 17:48:33,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:33,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 81 conjunts are in the unsatisfiable core [2022-10-16 17:48:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4714 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 3766 trivial. 0 not checked. [2022-10-16 17:48:34,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4714 backedges. 585 proven. 459 refuted. 0 times theorem prover too weak. 3670 trivial. 0 not checked. [2022-10-16 17:48:42,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397131918] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:42,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:42,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2022-10-16 17:48:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375068375] [2022-10-16 17:48:42,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:42,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-10-16 17:48:42,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-10-16 17:48:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 17:48:42,079 INFO L87 Difference]: Start difference. First operand 18717 states and 27687 transitions. Second operand has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-10-16 17:48:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:43,726 INFO L93 Difference]: Finished difference Result 24011 states and 38567 transitions. [2022-10-16 17:48:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-10-16 17:48:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) Word has length 505 [2022-10-16 17:48:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:43,868 INFO L225 Difference]: With dead ends: 24011 [2022-10-16 17:48:43,869 INFO L226 Difference]: Without dead ends: 23998 [2022-10-16 17:48:43,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1050 SyntacticMatches, 62 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5858 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=950, Invalid=6360, Unknown=0, NotChecked=0, Total=7310 [2022-10-16 17:48:43,907 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 94 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:43,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 728 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:48:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23998 states. [2022-10-16 17:48:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23998 to 20321. [2022-10-16 17:48:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20321 states, 16156 states have (on average 1.0658578856152514) internal successors, (17220), 16068 states have internal predecessors, (17220), 2593 states have call successors, (2593), 1007 states have call predecessors, (2593), 1570 states have return successors, (12769), 3245 states have call predecessors, (12769), 2592 states have call successors, (12769) [2022-10-16 17:48:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20321 states to 20321 states and 32582 transitions. [2022-10-16 17:48:45,329 INFO L78 Accepts]: Start accepts. Automaton has 20321 states and 32582 transitions. Word has length 505 [2022-10-16 17:48:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:45,330 INFO L495 AbstractCegarLoop]: Abstraction has 20321 states and 32582 transitions. [2022-10-16 17:48:45,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-10-16 17:48:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 20321 states and 32582 transitions. [2022-10-16 17:48:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-10-16 17:48:45,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:45,337 INFO L195 NwaCegarLoop]: trace histogram [39, 36, 33, 32, 30, 26, 24, 24, 24, 24, 22, 22, 22, 22, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 10, 9, 7, 3, 1, 1, 1, 1] [2022-10-16 17:48:45,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-10-16 17:48:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-16 17:48:45,538 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:48:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash -370771018, now seen corresponding path program 6 times [2022-10-16 17:48:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554173073] [2022-10-16 17:48:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-16 17:48:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-10-16 17:48:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:48:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:48:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:48:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:48:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:48:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:48:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 1101 proven. 2615 refuted. 0 times theorem prover too weak. 4358 trivial. 0 not checked. [2022-10-16 17:48:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554173073] [2022-10-16 17:48:47,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554173073] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661654168] [2022-10-16 17:48:47,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:48:47,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:47,879 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:47,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 17:48:48,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-10-16 17:48:48,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:48,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 17:48:48,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 1401 proven. 300 refuted. 0 times theorem prover too weak. 6373 trivial. 0 not checked. [2022-10-16 17:48:48,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 1405 proven. 304 refuted. 0 times theorem prover too weak. 6365 trivial. 0 not checked. [2022-10-16 17:48:50,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661654168] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:50,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:50,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 14, 17] total 69 [2022-10-16 17:48:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093809976] [2022-10-16 17:48:50,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-10-16 17:48:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-10-16 17:48:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4270, Unknown=0, NotChecked=0, Total=4692 [2022-10-16 17:48:50,341 INFO L87 Difference]: Start difference. First operand 20321 states and 32582 transitions. Second operand has 69 states, 68 states have (on average 4.044117647058823) internal successors, (275), 50 states have internal predecessors, (275), 38 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (35), 22 states have call predecessors, (35), 19 states have call successors, (35) [2022-10-16 17:48:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:58,885 INFO L93 Difference]: Finished difference Result 56588 states and 110662 transitions. [2022-10-16 17:48:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-10-16 17:48:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 4.044117647058823) internal successors, (275), 50 states have internal predecessors, (275), 38 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (35), 22 states have call predecessors, (35), 19 states have call successors, (35) Word has length 663 [2022-10-16 17:48:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:59,154 INFO L225 Difference]: With dead ends: 56588 [2022-10-16 17:48:59,154 INFO L226 Difference]: Without dead ends: 36012 [2022-10-16 17:48:59,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1606 GetRequests, 1429 SyntacticMatches, 8 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9809 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3889, Invalid=25181, Unknown=0, NotChecked=0, Total=29070 [2022-10-16 17:48:59,531 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1495 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 6574 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 7500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 6574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 964 Invalid, 7500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 6574 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 17:48:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36012 states. [2022-10-16 17:49:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36012 to 30811. [2022-10-16 17:49:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30811 states, 24514 states have (on average 1.0734682222403524) internal successors, (26315), 24412 states have internal predecessors, (26315), 3975 states have call successors, (3975), 1599 states have call predecessors, (3975), 2320 states have return successors, (18739), 4799 states have call predecessors, (18739), 3964 states have call successors, (18739) [2022-10-16 17:49:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30811 states to 30811 states and 49029 transitions. [2022-10-16 17:49:01,529 INFO L78 Accepts]: Start accepts. Automaton has 30811 states and 49029 transitions. Word has length 663 [2022-10-16 17:49:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:49:01,529 INFO L495 AbstractCegarLoop]: Abstraction has 30811 states and 49029 transitions. [2022-10-16 17:49:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 4.044117647058823) internal successors, (275), 50 states have internal predecessors, (275), 38 states have call successors, (51), 20 states have call predecessors, (51), 12 states have return successors, (35), 22 states have call predecessors, (35), 19 states have call successors, (35) [2022-10-16 17:49:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 30811 states and 49029 transitions. [2022-10-16 17:49:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2022-10-16 17:49:01,537 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:49:01,537 INFO L195 NwaCegarLoop]: trace histogram [41, 39, 35, 33, 32, 30, 24, 24, 24, 24, 24, 24, 24, 24, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1] [2022-10-16 17:49:01,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-10-16 17:49:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-16 17:49:01,752 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:49:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:49:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1953460531, now seen corresponding path program 6 times [2022-10-16 17:49:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:49:01,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624941532] [2022-10-16 17:49:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:49:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:49:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 17:49:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:49:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:49:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:49:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:49:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-10-16 17:49:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:49:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:49:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-10-16 17:49:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 17:49:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 17:49:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-16 17:49:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:49:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-16 17:49:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:49:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9323 backedges. 1375 proven. 2956 refuted. 0 times theorem prover too weak. 4992 trivial. 0 not checked. [2022-10-16 17:49:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:49:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624941532] [2022-10-16 17:49:04,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624941532] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:49:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33009703] [2022-10-16 17:49:04,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:49:04,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:49:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:49:04,363 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:49:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 17:49:04,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-10-16 17:49:04,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:49:04,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:49:04,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:49:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9323 backedges. 1482 proven. 106 refuted. 0 times theorem prover too weak. 7735 trivial. 0 not checked. [2022-10-16 17:49:05,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:49:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9323 backedges. 1482 proven. 113 refuted. 0 times theorem prover too weak. 7728 trivial. 0 not checked. [2022-10-16 17:49:06,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33009703] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:49:06,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:49:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 13, 15] total 66 [2022-10-16 17:49:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805443282] [2022-10-16 17:49:06,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:49:06,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-16 17:49:06,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:49:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-16 17:49:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=3837, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 17:49:06,678 INFO L87 Difference]: Start difference. First operand 30811 states and 49029 transitions. Second operand has 66 states, 65 states have (on average 3.8923076923076922) internal successors, (253), 48 states have internal predecessors, (253), 36 states have call successors, (47), 19 states have call predecessors, (47), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) [2022-10-16 17:49:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:49:11,616 INFO L93 Difference]: Finished difference Result 62607 states and 112104 transitions. [2022-10-16 17:49:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-16 17:49:11,617 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 3.8923076923076922) internal successors, (253), 48 states have internal predecessors, (253), 36 states have call successors, (47), 19 states have call predecessors, (47), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) Word has length 715 [2022-10-16 17:49:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:49:11,869 INFO L225 Difference]: With dead ends: 62607 [2022-10-16 17:49:11,869 INFO L226 Difference]: Without dead ends: 31955 [2022-10-16 17:49:12,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 1552 SyntacticMatches, 7 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1089, Invalid=7653, Unknown=0, NotChecked=0, Total=8742 [2022-10-16 17:49:12,351 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 839 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 4152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:49:12,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 2328 Invalid, 4152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 17:49:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31955 states.