./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci05-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci05-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7348520f04d4d9b10e62396a3389d8f9a2f3fbd69eb8f1a8953214a9bb54eb76 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:40:42,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:40:42,520 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:40:42,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:40:42,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:40:42,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:40:42,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:40:42,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:40:42,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:40:42,539 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:40:42,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:40:42,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:40:42,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:40:42,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:40:42,540 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:40:42,541 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:40:42,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:40:42,541 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:40:42,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7348520f04d4d9b10e62396a3389d8f9a2f3fbd69eb8f1a8953214a9bb54eb76 [2025-03-09 02:40:42,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:40:42,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:40:42,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:40:42,762 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:40:42,762 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:40:42,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci05-overflow.c [2025-03-09 02:40:43,871 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e88c59f/fca98cfb9f104642b190d11c3ea63389/FLAGcdee1809e [2025-03-09 02:40:44,096 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:40:44,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci05-overflow.c [2025-03-09 02:40:44,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e88c59f/fca98cfb9f104642b190d11c3ea63389/FLAGcdee1809e [2025-03-09 02:40:44,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e88c59f/fca98cfb9f104642b190d11c3ea63389 [2025-03-09 02:40:44,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:40:44,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:40:44,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:40:44,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:40:44,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:40:44,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c20846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44, skipping insertion in model container [2025-03-09 02:40:44,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:40:44,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:40:44,579 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:40:44,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:40:44,599 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:40:44,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44 WrapperNode [2025-03-09 02:40:44,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:40:44,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:40:44,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:40:44,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:40:44,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,618 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-03-09 02:40:44,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:40:44,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:40:44,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:40:44,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:40:44,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,629 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 02:40:44,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,631 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:40:44,634 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:40:44,634 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:40:44,634 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:40:44,634 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (1/1) ... [2025-03-09 02:40:44,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:40:44,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:44,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 02:40:44,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 02:40:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2025-03-09 02:40:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2025-03-09 02:40:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:40:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:40:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:40:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:40:44,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:40:44,715 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:40:44,777 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: havoc #t~ret4;havoc #t~ret5; [2025-03-09 02:40:44,804 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-09 02:40:44,804 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:40:44,810 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:40:44,810 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:40:44,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:40:44 BoogieIcfgContainer [2025-03-09 02:40:44,811 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:40:44,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:40:44,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:40:44,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:40:44,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:40:44" (1/3) ... [2025-03-09 02:40:44,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ebec50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:40:44, skipping insertion in model container [2025-03-09 02:40:44,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:40:44" (2/3) ... [2025-03-09 02:40:44,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ebec50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:40:44, skipping insertion in model container [2025-03-09 02:40:44,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:40:44" (3/3) ... [2025-03-09 02:40:44,818 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci05-overflow.c [2025-03-09 02:40:44,828 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:40:44,829 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci05-overflow.c that has 2 procedures, 31 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-09 02:40:44,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:40:44,873 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1a56eb06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:40:44,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-09 02:40:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 02:40:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 02:40:44,881 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:44,881 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:44,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:44,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:44,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1001399972, now seen corresponding path program 1 times [2025-03-09 02:40:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958791199] [2025-03-09 02:40:44,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:44,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 02:40:44,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 02:40:44,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:44,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:40:45,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958791199] [2025-03-09 02:40:45,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958791199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:40:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804831649] [2025-03-09 02:40:45,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:40:45,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:40:45,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:40:45,033 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2025-03-09 02:40:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,069 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2025-03-09 02:40:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:40:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2025-03-09 02:40:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,075 INFO L225 Difference]: With dead ends: 36 [2025-03-09 02:40:45,076 INFO L226 Difference]: Without dead ends: 24 [2025-03-09 02:40:45,079 INFO L434 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 [2025-03-09 02:40:45,081 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:45,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-09 02:40:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2025-03-09 02:40:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-03-09 02:40:45,114 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2025-03-09 02:40:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,115 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-03-09 02:40:45,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2025-03-09 02:40:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-03-09 02:40:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:40:45,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,115 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:45,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:40:45,116 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash 978628045, now seen corresponding path program 1 times [2025-03-09 02:40:45,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465865047] [2025-03-09 02:40:45,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:40:45,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:40:45,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:40:45,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465865047] [2025-03-09 02:40:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465865047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:40:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315477564] [2025-03-09 02:40:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:45,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:45,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:45,186 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:40:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,254 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2025-03-09 02:40:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 02:40:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,255 INFO L225 Difference]: With dead ends: 24 [2025-03-09 02:40:45,255 INFO L226 Difference]: Without dead ends: 22 [2025-03-09 02:40:45,256 INFO L434 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 [2025-03-09 02:40:45,256 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:45,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-09 02:40:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-03-09 02:40:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-03-09 02:40:45,264 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2025-03-09 02:40:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,265 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-03-09 02:40:45,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:40:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-03-09 02:40:45,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 02:40:45,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,265 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:45,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 02:40:45,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -989645326, now seen corresponding path program 1 times [2025-03-09 02:40:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419257471] [2025-03-09 02:40:45,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 02:40:45,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 02:40:45,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-09 02:40:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419257471] [2025-03-09 02:40:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419257471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:45,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:40:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:40:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785846196] [2025-03-09 02:40:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:45,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:45,442 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:45,479 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-03-09 02:40:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-03-09 02:40:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:45,480 INFO L225 Difference]: With dead ends: 34 [2025-03-09 02:40:45,480 INFO L226 Difference]: Without dead ends: 32 [2025-03-09 02:40:45,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:40:45,481 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:45,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-09 02:40:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2025-03-09 02:40:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-09 02:40:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2025-03-09 02:40:45,486 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2025-03-09 02:40:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:45,486 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2025-03-09 02:40:45,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2025-03-09 02:40:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:40:45,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:45,488 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:45,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 02:40:45,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:45,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1650141125, now seen corresponding path program 1 times [2025-03-09 02:40:45,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:45,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876788048] [2025-03-09 02:40:45,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:45,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:40:45,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:40:45,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:45,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876788048] [2025-03-09 02:40:45,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876788048] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:45,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354407002] [2025-03-09 02:40:45,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:45,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:45,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:45,604 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) [2025-03-09 02:40:45,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:40:45,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:40:45,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:40:45,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:45,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:45,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 02:40:45,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 02:40:45,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 02:40:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354407002] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:45,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-09 02:40:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767324424] [2025-03-09 02:40:45,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:45,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 02:40:45,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:45,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 02:40:45,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:40:45,872 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:40:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:46,087 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2025-03-09 02:40:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:40:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2025-03-09 02:40:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:46,089 INFO L225 Difference]: With dead ends: 90 [2025-03-09 02:40:46,089 INFO L226 Difference]: Without dead ends: 64 [2025-03-09 02:40:46,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2025-03-09 02:40:46,090 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:46,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-09 02:40:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2025-03-09 02:40:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-09 02:40:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-03-09 02:40:46,102 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2025-03-09 02:40:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:46,102 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-03-09 02:40:46,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:40:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-03-09 02:40:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:40:46,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:46,103 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:46,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:46,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:46,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:46,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1771203833, now seen corresponding path program 2 times [2025-03-09 02:40:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935349827] [2025-03-09 02:40:46,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:46,310 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-09 02:40:46,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:40:46,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:46,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:46,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:46,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935349827] [2025-03-09 02:40:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935349827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19503760] [2025-03-09 02:40:46,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:46,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:46,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:46,384 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) [2025-03-09 02:40:46,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:40:46,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-09 02:40:46,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:40:46,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:46,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 02:40:46,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:40:46,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:40:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19503760] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:46,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:40:46,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-09 02:40:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017646835] [2025-03-09 02:40:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:46,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:40:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:46,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:40:46,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:40:46,456 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:46,478 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2025-03-09 02:40:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:40:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-03-09 02:40:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:46,479 INFO L225 Difference]: With dead ends: 59 [2025-03-09 02:40:46,479 INFO L226 Difference]: Without dead ends: 58 [2025-03-09 02:40:46,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:40:46,479 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:46,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-09 02:40:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2025-03-09 02:40:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-09 02:40:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2025-03-09 02:40:46,487 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2025-03-09 02:40:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:46,487 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2025-03-09 02:40:46,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2025-03-09 02:40:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-09 02:40:46,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:46,490 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:46,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 02:40:46,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:46,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:46,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash -591075408, now seen corresponding path program 1 times [2025-03-09 02:40:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:46,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052998890] [2025-03-09 02:40:46,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:46,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:40:46,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:40:46,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:46,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-09 02:40:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052998890] [2025-03-09 02:40:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052998890] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793510934] [2025-03-09 02:40:46,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:46,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:46,764 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) [2025-03-09 02:40:46,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:40:46,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 02:40:46,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 02:40:46,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:46,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:46,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 02:40:46,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-09 02:40:46,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:40:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793510934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:40:46,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:40:46,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-09 02:40:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002140567] [2025-03-09 02:40:46,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:40:46,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:40:46,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:46,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:40:46,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:40:46,848 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:46,882 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2025-03-09 02:40:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:40:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2025-03-09 02:40:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:46,884 INFO L225 Difference]: With dead ends: 81 [2025-03-09 02:40:46,884 INFO L226 Difference]: Without dead ends: 80 [2025-03-09 02:40:46,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:40:46,885 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:46,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-09 02:40:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2025-03-09 02:40:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2025-03-09 02:40:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2025-03-09 02:40:46,896 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2025-03-09 02:40:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:46,896 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2025-03-09 02:40:46,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:40:46,896 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2025-03-09 02:40:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-09 02:40:46,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:46,897 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 02:40:46,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:47,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:47,102 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:47,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1033276172, now seen corresponding path program 1 times [2025-03-09 02:40:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429797318] [2025-03-09 02:40:47,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:47,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 02:40:47,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 02:40:47,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-09 02:40:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429797318] [2025-03-09 02:40:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429797318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268189539] [2025-03-09 02:40:47,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:47,232 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) [2025-03-09 02:40:47,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:40:47,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 02:40:47,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 02:40:47,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:47,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 02:40:47,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-09 02:40:47,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-09 02:40:47,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268189539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:47,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:47,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2025-03-09 02:40:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460533107] [2025-03-09 02:40:47,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:47,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:40:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:47,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:40:47,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:40:47,512 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-09 02:40:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:47,692 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2025-03-09 02:40:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 02:40:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 45 [2025-03-09 02:40:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:47,696 INFO L225 Difference]: With dead ends: 140 [2025-03-09 02:40:47,696 INFO L226 Difference]: Without dead ends: 138 [2025-03-09 02:40:47,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:40:47,697 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:47,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 183 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-03-09 02:40:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2025-03-09 02:40:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2025-03-09 02:40:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2025-03-09 02:40:47,721 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 45 [2025-03-09 02:40:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:47,722 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2025-03-09 02:40:47,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-09 02:40:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2025-03-09 02:40:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-09 02:40:47,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:47,724 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-03-09 02:40:47,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:47,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:47,925 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:47,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1306687898, now seen corresponding path program 1 times [2025-03-09 02:40:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427059449] [2025-03-09 02:40:47,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:47,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-09 02:40:47,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-09 02:40:47,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:47,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 38 proven. 86 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-03-09 02:40:48,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:48,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427059449] [2025-03-09 02:40:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427059449] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:48,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560241260] [2025-03-09 02:40:48,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:40:48,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:48,092 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) [2025-03-09 02:40:48,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:40:48,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-09 02:40:48,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-09 02:40:48,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:48,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:48,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:40:48,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 92 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-09 02:40:48,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-09 02:40:48,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560241260] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:48,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:48,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2025-03-09 02:40:48,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621187159] [2025-03-09 02:40:48,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:48,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 02:40:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:48,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 02:40:48,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:40:48,508 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2025-03-09 02:40:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:48,670 INFO L93 Difference]: Finished difference Result 173 states and 298 transitions. [2025-03-09 02:40:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 02:40:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 83 [2025-03-09 02:40:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:48,672 INFO L225 Difference]: With dead ends: 173 [2025-03-09 02:40:48,673 INFO L226 Difference]: Without dead ends: 79 [2025-03-09 02:40:48,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:40:48,677 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 118 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:48,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 62 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-03-09 02:40:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2025-03-09 02:40:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2025-03-09 02:40:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2025-03-09 02:40:48,690 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 83 [2025-03-09 02:40:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:48,690 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2025-03-09 02:40:48,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2025-03-09 02:40:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2025-03-09 02:40:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-09 02:40:48,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:48,694 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 4, 1, 1, 1, 1] [2025-03-09 02:40:48,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 02:40:48,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:48,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:48,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:48,895 INFO L85 PathProgramCache]: Analyzing trace with hash 291534894, now seen corresponding path program 2 times [2025-03-09 02:40:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:48,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895857902] [2025-03-09 02:40:48,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:48,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:48,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-03-09 02:40:48,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-03-09 02:40:48,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:48,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 94 proven. 278 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2025-03-09 02:40:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895857902] [2025-03-09 02:40:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895857902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448490603] [2025-03-09 02:40:49,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:49,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:49,072 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) [2025-03-09 02:40:49,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:40:49,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-03-09 02:40:49,134 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-03-09 02:40:49,135 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:49,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:49,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:40:49,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 449 proven. 15 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2025-03-09 02:40:49,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 95 proven. 328 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2025-03-09 02:40:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448490603] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:49,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2025-03-09 02:40:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767651790] [2025-03-09 02:40:49,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:49,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 02:40:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:49,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 02:40:49,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-09 02:40:49,496 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:40:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:49,582 INFO L93 Difference]: Finished difference Result 128 states and 178 transitions. [2025-03-09 02:40:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 02:40:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 174 [2025-03-09 02:40:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:49,583 INFO L225 Difference]: With dead ends: 128 [2025-03-09 02:40:49,583 INFO L226 Difference]: Without dead ends: 62 [2025-03-09 02:40:49,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2025-03-09 02:40:49,584 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:49,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 63 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-03-09 02:40:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2025-03-09 02:40:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 10 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-09 02:40:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2025-03-09 02:40:49,598 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 174 [2025-03-09 02:40:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:49,598 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2025-03-09 02:40:49,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:40:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2025-03-09 02:40:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-09 02:40:49,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:49,601 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1] [2025-03-09 02:40:49,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 02:40:49,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:49,802 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:49,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1797592140, now seen corresponding path program 3 times [2025-03-09 02:40:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889175264] [2025-03-09 02:40:49,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:49,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 10 equivalence classes. [2025-03-09 02:40:49,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 70 of 103 statements. [2025-03-09 02:40:49,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-09 02:40:49,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 100 proven. 25 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-03-09 02:40:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889175264] [2025-03-09 02:40:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889175264] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482398525] [2025-03-09 02:40:50,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:50,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:50,011 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) [2025-03-09 02:40:50,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:40:50,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 10 equivalence classes. [2025-03-09 02:40:50,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 70 of 103 statements. [2025-03-09 02:40:50,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-09 02:40:50,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:40:50,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-09 02:40:50,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-09 02:40:50,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482398525] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:50,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:50,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2025-03-09 02:40:50,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929490844] [2025-03-09 02:40:50,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:50,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 02:40:50,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:50,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 02:40:50,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-03-09 02:40:50,502 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-09 02:40:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:50,566 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2025-03-09 02:40:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 02:40:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) Word has length 103 [2025-03-09 02:40:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:50,568 INFO L225 Difference]: With dead ends: 63 [2025-03-09 02:40:50,570 INFO L226 Difference]: Without dead ends: 62 [2025-03-09 02:40:50,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-03-09 02:40:50,571 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:50,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 127 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:40:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-03-09 02:40:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2025-03-09 02:40:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-09 02:40:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2025-03-09 02:40:50,576 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 103 [2025-03-09 02:40:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:50,576 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2025-03-09 02:40:50,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2025-03-09 02:40:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2025-03-09 02:40:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-09 02:40:50,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:50,577 INFO L218 NwaCegarLoop]: trace histogram [18, 15, 15, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 3, 1, 1, 1, 1] [2025-03-09 02:40:50,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:50,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:50,781 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:50,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2131406242, now seen corresponding path program 2 times [2025-03-09 02:40:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:50,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681192459] [2025-03-09 02:40:50,782 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:50,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 164 statements into 2 equivalence classes. [2025-03-09 02:40:50,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 164 of 164 statements. [2025-03-09 02:40:50,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:50,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 120 proven. 355 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2025-03-09 02:40:50,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681192459] [2025-03-09 02:40:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681192459] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585575112] [2025-03-09 02:40:50,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:40:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:50,973 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) [2025-03-09 02:40:50,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:40:51,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 164 statements into 2 equivalence classes. [2025-03-09 02:40:51,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 164 of 164 statements. [2025-03-09 02:40:51,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:40:51,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:51,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:40:51,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 515 proven. 189 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-03-09 02:40:51,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 141 proven. 410 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2025-03-09 02:40:51,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585575112] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:51,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:51,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2025-03-09 02:40:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323598872] [2025-03-09 02:40:51,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:51,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 02:40:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:51,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 02:40:51,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:40:51,525 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 19 states have internal predecessors, (111), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-03-09 02:40:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:51,705 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2025-03-09 02:40:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:40:51,706 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 19 states have internal predecessors, (111), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 164 [2025-03-09 02:40:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:51,707 INFO L225 Difference]: With dead ends: 135 [2025-03-09 02:40:51,707 INFO L226 Difference]: Without dead ends: 85 [2025-03-09 02:40:51,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 319 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2025-03-09 02:40:51,708 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 151 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:51,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 77 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:40:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-09 02:40:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2025-03-09 02:40:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 56 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (17), 11 states have call predecessors, (17), 7 states have call successors, (17) [2025-03-09 02:40:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2025-03-09 02:40:51,713 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 164 [2025-03-09 02:40:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:51,713 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2025-03-09 02:40:51,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 19 states have internal predecessors, (111), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2025-03-09 02:40:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2025-03-09 02:40:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-09 02:40:51,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:51,714 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2025-03-09 02:40:51,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 02:40:51,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 02:40:51,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:51,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1623830502, now seen corresponding path program 3 times [2025-03-09 02:40:51,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:51,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156643771] [2025-03-09 02:40:51,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:51,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:51,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 8 equivalence classes. [2025-03-09 02:40:51,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 79 of 91 statements. [2025-03-09 02:40:51,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 02:40:51,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 102 proven. 38 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2025-03-09 02:40:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156643771] [2025-03-09 02:40:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156643771] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922257590] [2025-03-09 02:40:52,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:40:52,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:52,002 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) [2025-03-09 02:40:52,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 02:40:52,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 8 equivalence classes. [2025-03-09 02:40:52,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 79 of 91 statements. [2025-03-09 02:40:52,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 02:40:52,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:52,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-09 02:40:52,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-09 02:40:52,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-03-09 02:40:52,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922257590] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:52,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:52,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2025-03-09 02:40:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913450205] [2025-03-09 02:40:52,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:52,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-09 02:40:52,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:52,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-09 02:40:52,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2025-03-09 02:40:52,772 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) [2025-03-09 02:40:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:53,355 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2025-03-09 02:40:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-09 02:40:53,355 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) Word has length 91 [2025-03-09 02:40:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:53,356 INFO L225 Difference]: With dead ends: 192 [2025-03-09 02:40:53,356 INFO L226 Difference]: Without dead ends: 124 [2025-03-09 02:40:53,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=597, Invalid=2709, Unknown=0, NotChecked=0, Total=3306 [2025-03-09 02:40:53,358 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 174 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:53,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 120 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-09 02:40:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 97. [2025-03-09 02:40:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 11 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2025-03-09 02:40:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2025-03-09 02:40:53,374 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 91 [2025-03-09 02:40:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:53,374 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2025-03-09 02:40:53,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 30 states have internal predecessors, (99), 10 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (22), 19 states have call predecessors, (22), 10 states have call successors, (22) [2025-03-09 02:40:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2025-03-09 02:40:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-09 02:40:53,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:53,376 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 10, 7, 1, 1, 1, 1] [2025-03-09 02:40:53,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:53,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:53,576 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:53,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:53,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2017069360, now seen corresponding path program 4 times [2025-03-09 02:40:53,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:53,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680682868] [2025-03-09 02:40:53,577 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:40:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:53,587 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 319 statements into 2 equivalence classes. [2025-03-09 02:40:53,598 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 189 of 319 statements. [2025-03-09 02:40:53,598 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:40:53,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 377 proven. 976 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2025-03-09 02:40:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680682868] [2025-03-09 02:40:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680682868] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675051156] [2025-03-09 02:40:53,778 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:40:53,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:53,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:53,780 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) [2025-03-09 02:40:53,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 02:40:53,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 319 statements into 2 equivalence classes. [2025-03-09 02:40:53,856 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 189 of 319 statements. [2025-03-09 02:40:53,856 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:40:53,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:53,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 02:40:53,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 359 proven. 1338 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2025-03-09 02:40:53,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 359 proven. 1377 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-03-09 02:40:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675051156] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:54,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2025-03-09 02:40:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350730919] [2025-03-09 02:40:54,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:54,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 02:40:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:54,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 02:40:54,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:40:54,899 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2025-03-09 02:40:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:55,195 INFO L93 Difference]: Finished difference Result 247 states and 397 transitions. [2025-03-09 02:40:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 02:40:55,195 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) Word has length 319 [2025-03-09 02:40:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:55,197 INFO L225 Difference]: With dead ends: 247 [2025-03-09 02:40:55,197 INFO L226 Difference]: Without dead ends: 155 [2025-03-09 02:40:55,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 625 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2025-03-09 02:40:55,199 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 253 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:55,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 121 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-09 02:40:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2025-03-09 02:40:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 107 states have internal predecessors, (116), 15 states have call successors, (15), 8 states have call predecessors, (15), 12 states have return successors, (57), 23 states have call predecessors, (57), 14 states have call successors, (57) [2025-03-09 02:40:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2025-03-09 02:40:55,215 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 319 [2025-03-09 02:40:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:55,215 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2025-03-09 02:40:55,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2025-03-09 02:40:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2025-03-09 02:40:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2025-03-09 02:40:55,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:55,218 INFO L218 NwaCegarLoop]: trace histogram [36, 34, 29, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 11, 7, 1, 1, 1, 1] [2025-03-09 02:40:55,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 02:40:55,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 02:40:55,419 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:55,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash 585046834, now seen corresponding path program 5 times [2025-03-09 02:40:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617310556] [2025-03-09 02:40:55,419 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:40:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:55,432 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 345 statements into 27 equivalence classes. [2025-03-09 02:40:55,448 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 197 of 345 statements. [2025-03-09 02:40:55,448 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-09 02:40:55,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 734 proven. 1144 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2025-03-09 02:40:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617310556] [2025-03-09 02:40:55,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617310556] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:55,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827799031] [2025-03-09 02:40:55,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:40:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:55,682 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) [2025-03-09 02:40:55,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 02:40:55,732 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 345 statements into 27 equivalence classes. [2025-03-09 02:40:55,767 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 197 of 345 statements. [2025-03-09 02:40:55,767 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-09 02:40:55,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:55,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 02:40:55,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 740 proven. 1135 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2025-03-09 02:40:55,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 737 proven. 1177 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2025-03-09 02:40:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827799031] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:56,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 20] total 26 [2025-03-09 02:40:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031114138] [2025-03-09 02:40:56,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:56,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 02:40:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:56,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 02:40:56,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-03-09 02:40:56,906 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2025-03-09 02:40:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:57,231 INFO L93 Difference]: Finished difference Result 278 states and 427 transitions. [2025-03-09 02:40:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 02:40:57,231 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) Word has length 345 [2025-03-09 02:40:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:57,233 INFO L225 Difference]: With dead ends: 278 [2025-03-09 02:40:57,233 INFO L226 Difference]: Without dead ends: 144 [2025-03-09 02:40:57,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 679 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=519, Invalid=1373, Unknown=0, NotChecked=0, Total=1892 [2025-03-09 02:40:57,236 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 241 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:57,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 123 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-09 02:40:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2025-03-09 02:40:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 94 states have internal predecessors, (103), 14 states have call successors, (14), 11 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2025-03-09 02:40:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2025-03-09 02:40:57,245 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 345 [2025-03-09 02:40:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:57,245 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2025-03-09 02:40:57,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2025-03-09 02:40:57,245 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2025-03-09 02:40:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2025-03-09 02:40:57,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:57,247 INFO L218 NwaCegarLoop]: trace histogram [28, 26, 23, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 9, 5, 1, 1, 1, 1] [2025-03-09 02:40:57,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:57,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-09 02:40:57,451 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:57,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash 303395512, now seen corresponding path program 6 times [2025-03-09 02:40:57,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:57,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907973507] [2025-03-09 02:40:57,451 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:40:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:57,459 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 267 statements into 20 equivalence classes. [2025-03-09 02:40:57,477 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 190 of 267 statements. [2025-03-09 02:40:57,477 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-09 02:40:57,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 526 proven. 695 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2025-03-09 02:40:57,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907973507] [2025-03-09 02:40:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907973507] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802199209] [2025-03-09 02:40:57,676 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:40:57,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:57,678 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) [2025-03-09 02:40:57,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 02:40:57,730 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 267 statements into 20 equivalence classes. [2025-03-09 02:40:57,761 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 190 of 267 statements. [2025-03-09 02:40:57,761 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-09 02:40:57,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:57,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 02:40:57,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:40:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 519 proven. 734 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2025-03-09 02:40:57,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:40:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 515 proven. 786 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2025-03-09 02:40:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802199209] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:40:58,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:40:58,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 26 [2025-03-09 02:40:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811665108] [2025-03-09 02:40:58,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:40:58,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 02:40:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:40:58,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 02:40:58,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2025-03-09 02:40:58,889 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 19 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 14 states have call predecessors, (30), 19 states have call successors, (30) [2025-03-09 02:40:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:40:59,130 INFO L93 Difference]: Finished difference Result 245 states and 326 transitions. [2025-03-09 02:40:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-09 02:40:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 19 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 14 states have call predecessors, (30), 19 states have call successors, (30) Word has length 267 [2025-03-09 02:40:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:40:59,132 INFO L225 Difference]: With dead ends: 245 [2025-03-09 02:40:59,132 INFO L226 Difference]: Without dead ends: 129 [2025-03-09 02:40:59,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 518 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2025-03-09 02:40:59,133 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 92 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:40:59,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 195 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:40:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-09 02:40:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2025-03-09 02:40:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 100 states have internal predecessors, (107), 16 states have call successors, (16), 14 states have call predecessors, (16), 7 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2025-03-09 02:40:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2025-03-09 02:40:59,140 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 267 [2025-03-09 02:40:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:40:59,141 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2025-03-09 02:40:59,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 26 states have internal predecessors, (141), 19 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 14 states have call predecessors, (30), 19 states have call successors, (30) [2025-03-09 02:40:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2025-03-09 02:40:59,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2025-03-09 02:40:59,145 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:40:59,145 INFO L218 NwaCegarLoop]: trace histogram [52, 50, 42, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 24, 16, 10, 1, 1, 1, 1] [2025-03-09 02:40:59,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 02:40:59,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 02:40:59,350 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:40:59,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:40:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2064975301, now seen corresponding path program 7 times [2025-03-09 02:40:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:40:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397130551] [2025-03-09 02:40:59,351 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:40:59,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:40:59,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 502 statements into 1 equivalence classes. [2025-03-09 02:40:59,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 502 of 502 statements. [2025-03-09 02:40:59,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:40:59,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:40:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1125 proven. 2452 refuted. 0 times theorem prover too weak. 5461 trivial. 0 not checked. [2025-03-09 02:40:59,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:40:59,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397130551] [2025-03-09 02:40:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397130551] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:40:59,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625586152] [2025-03-09 02:40:59,883 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:40:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:40:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:40:59,885 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) [2025-03-09 02:40:59,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 02:40:59,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 502 statements into 1 equivalence classes. [2025-03-09 02:41:00,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 502 of 502 statements. [2025-03-09 02:41:00,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:00,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:00,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-09 02:41:00,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1330 proven. 2649 refuted. 0 times theorem prover too weak. 5059 trivial. 0 not checked. [2025-03-09 02:41:00,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9038 backedges. 1330 proven. 2764 refuted. 0 times theorem prover too weak. 4944 trivial. 0 not checked. [2025-03-09 02:41:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625586152] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:01,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:01,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2025-03-09 02:41:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100730109] [2025-03-09 02:41:01,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:01,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-09 02:41:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:01,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-09 02:41:01,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2025-03-09 02:41:01,885 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 32 states, 32 states have (on average 5.40625) internal successors, (173), 32 states have internal predecessors, (173), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) [2025-03-09 02:41:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:02,288 INFO L93 Difference]: Finished difference Result 288 states and 373 transitions. [2025-03-09 02:41:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 02:41:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.40625) internal successors, (173), 32 states have internal predecessors, (173), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) Word has length 502 [2025-03-09 02:41:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:02,291 INFO L225 Difference]: With dead ends: 288 [2025-03-09 02:41:02,291 INFO L226 Difference]: Without dead ends: 166 [2025-03-09 02:41:02,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 986 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2025-03-09 02:41:02,292 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 524 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:02,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 186 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-09 02:41:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 124. [2025-03-09 02:41:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 98 states have internal predecessors, (102), 16 states have call successors, (16), 12 states have call predecessors, (16), 8 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) [2025-03-09 02:41:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2025-03-09 02:41:02,300 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 502 [2025-03-09 02:41:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:02,300 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2025-03-09 02:41:02,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.40625) internal successors, (173), 32 states have internal predecessors, (173), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) [2025-03-09 02:41:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2025-03-09 02:41:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2025-03-09 02:41:02,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:02,303 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2025-03-09 02:41:02,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 02:41:02,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 02:41:02,507 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:02,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -929567143, now seen corresponding path program 8 times [2025-03-09 02:41:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522819420] [2025-03-09 02:41:02,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:02,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 398 statements into 2 equivalence classes. [2025-03-09 02:41:02,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 398 of 398 statements. [2025-03-09 02:41:02,537 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:02,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3328 trivial. 0 not checked. [2025-03-09 02:41:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522819420] [2025-03-09 02:41:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522819420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327559628] [2025-03-09 02:41:03,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:03,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:03,964 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) [2025-03-09 02:41:03,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 02:41:04,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 398 statements into 2 equivalence classes. [2025-03-09 02:41:04,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 398 of 398 statements. [2025-03-09 02:41:04,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:04,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:04,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-03-09 02:41:04,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2025-03-09 02:41:04,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2025-03-09 02:41:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327559628] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:09,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2025-03-09 02:41:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582947423] [2025-03-09 02:41:09,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-09 02:41:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:09,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-09 02:41:09,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2025-03-09 02:41:09,203 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2025-03-09 02:41:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:09,332 INFO L93 Difference]: Finished difference Result 155 states and 207 transitions. [2025-03-09 02:41:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 02:41:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) Word has length 398 [2025-03-09 02:41:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:09,334 INFO L225 Difference]: With dead ends: 155 [2025-03-09 02:41:09,334 INFO L226 Difference]: Without dead ends: 154 [2025-03-09 02:41:09,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 780 SyntacticMatches, 51 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2025-03-09 02:41:09,335 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:09,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 141 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-09 02:41:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 145. [2025-03-09 02:41:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.0258620689655173) internal successors, (119), 114 states have internal predecessors, (119), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (55), 18 states have call predecessors, (55), 17 states have call successors, (55) [2025-03-09 02:41:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2025-03-09 02:41:09,342 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 398 [2025-03-09 02:41:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:09,343 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2025-03-09 02:41:09,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2025-03-09 02:41:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2025-03-09 02:41:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2025-03-09 02:41:09,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:09,351 INFO L218 NwaCegarLoop]: trace histogram [126, 123, 102, 63, 63, 63, 63, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1] [2025-03-09 02:41:09,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:09,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:09,555 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:09,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1953987503, now seen corresponding path program 9 times [2025-03-09 02:41:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998742060] [2025-03-09 02:41:09,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:41:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:09,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1223 statements into 98 equivalence classes. [2025-03-09 02:41:09,691 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) and asserted 832 of 1223 statements. [2025-03-09 02:41:09,691 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2025-03-09 02:41:09,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 54820 backedges. 16724 proven. 5858 refuted. 0 times theorem prover too weak. 32238 trivial. 0 not checked. [2025-03-09 02:41:16,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:16,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998742060] [2025-03-09 02:41:16,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998742060] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:16,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262525655] [2025-03-09 02:41:16,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:41:16,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:16,534 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) [2025-03-09 02:41:16,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 02:41:16,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1223 statements into 98 equivalence classes. [2025-03-09 02:41:16,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) and asserted 832 of 1223 statements. [2025-03-09 02:41:16,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2025-03-09 02:41:16,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:16,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 165 conjuncts are in the unsatisfiable core [2025-03-09 02:41:16,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54820 backedges. 16360 proven. 4596 refuted. 0 times theorem prover too weak. 33864 trivial. 0 not checked. [2025-03-09 02:41:17,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 54820 backedges. 17227 proven. 4261 refuted. 0 times theorem prover too weak. 33332 trivial. 0 not checked. [2025-03-09 02:41:35,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262525655] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:35,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 38] total 52 [2025-03-09 02:41:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051576155] [2025-03-09 02:41:35,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:35,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-09 02:41:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:35,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-09 02:41:35,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=2149, Unknown=0, NotChecked=0, Total=2756 [2025-03-09 02:41:35,139 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 53 states, 52 states have (on average 2.769230769230769) internal successors, (144), 53 states have internal predecessors, (144), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (38), 37 states have call predecessors, (38), 14 states have call successors, (38) [2025-03-09 02:41:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:35,347 INFO L93 Difference]: Finished difference Result 203 states and 303 transitions. [2025-03-09 02:41:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-09 02:41:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.769230769230769) internal successors, (144), 53 states have internal predecessors, (144), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (38), 37 states have call predecessors, (38), 14 states have call successors, (38) Word has length 1223 [2025-03-09 02:41:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:35,350 INFO L225 Difference]: With dead ends: 203 [2025-03-09 02:41:35,350 INFO L226 Difference]: Without dead ends: 202 [2025-03-09 02:41:35,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2617 GetRequests, 2415 SyntacticMatches, 143 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2025-03-09 02:41:35,351 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:35,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 252 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-09 02:41:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 163. [2025-03-09 02:41:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.023076923076923) internal successors, (133), 128 states have internal predecessors, (133), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (83), 22 states have call predecessors, (83), 19 states have call successors, (83) [2025-03-09 02:41:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 236 transitions. [2025-03-09 02:41:35,362 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 236 transitions. Word has length 1223 [2025-03-09 02:41:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:35,363 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 236 transitions. [2025-03-09 02:41:35,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.769230769230769) internal successors, (144), 53 states have internal predecessors, (144), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (38), 37 states have call predecessors, (38), 14 states have call successors, (38) [2025-03-09 02:41:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 236 transitions. [2025-03-09 02:41:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1799 [2025-03-09 02:41:35,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:35,376 INFO L218 NwaCegarLoop]: trace histogram [185, 181, 150, 93, 93, 93, 93, 91, 91, 91, 91, 91, 90, 90, 90, 89, 57, 35, 1, 1, 1, 1] [2025-03-09 02:41:35,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:35,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 02:41:35,577 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:35,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1036138088, now seen corresponding path program 10 times [2025-03-09 02:41:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667780592] [2025-03-09 02:41:35,578 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:41:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:35,607 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1798 statements into 2 equivalence classes. [2025-03-09 02:41:35,688 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1067 of 1798 statements. [2025-03-09 02:41:35,688 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:41:35,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 2418 proven. 14377 refuted. 0 times theorem prover too weak. 102229 trivial. 0 not checked. [2025-03-09 02:41:36,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:36,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667780592] [2025-03-09 02:41:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667780592] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:36,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824856486] [2025-03-09 02:41:36,702 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:41:36,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:36,704 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) [2025-03-09 02:41:36,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 02:41:37,041 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1798 statements into 2 equivalence classes. [2025-03-09 02:41:37,180 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1067 of 1798 statements. [2025-03-09 02:41:37,180 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 02:41:37,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:37,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 02:41:37,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 62023 proven. 5564 refuted. 0 times theorem prover too weak. 51437 trivial. 0 not checked. [2025-03-09 02:41:37,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 119024 backedges. 2922 proven. 16841 refuted. 0 times theorem prover too weak. 99261 trivial. 0 not checked. [2025-03-09 02:41:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824856486] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:40,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 29] total 34 [2025-03-09 02:41:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951047646] [2025-03-09 02:41:40,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:40,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-09 02:41:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:40,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-09 02:41:40,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2025-03-09 02:41:40,333 INFO L87 Difference]: Start difference. First operand 163 states and 236 transitions. Second operand has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2025-03-09 02:41:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:40,796 INFO L93 Difference]: Finished difference Result 412 states and 683 transitions. [2025-03-09 02:41:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-09 02:41:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 1798 [2025-03-09 02:41:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:40,799 INFO L225 Difference]: With dead ends: 412 [2025-03-09 02:41:40,799 INFO L226 Difference]: Without dead ends: 254 [2025-03-09 02:41:40,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3661 GetRequests, 3577 SyntacticMatches, 17 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1170, Invalid=3522, Unknown=0, NotChecked=0, Total=4692 [2025-03-09 02:41:40,801 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 303 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:40,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 184 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2025-03-09 02:41:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 220. [2025-03-09 02:41:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 173 states have internal predecessors, (182), 27 states have call successors, (27), 17 states have call predecessors, (27), 15 states have return successors, (108), 29 states have call predecessors, (108), 26 states have call successors, (108) [2025-03-09 02:41:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 317 transitions. [2025-03-09 02:41:40,814 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 317 transitions. Word has length 1798 [2025-03-09 02:41:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:40,814 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 317 transitions. [2025-03-09 02:41:40,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.970588235294118) internal successors, (203), 34 states have internal predecessors, (203), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2025-03-09 02:41:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 317 transitions. [2025-03-09 02:41:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2025-03-09 02:41:40,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:40,829 INFO L218 NwaCegarLoop]: trace histogram [158, 156, 128, 79, 79, 79, 79, 78, 78, 78, 78, 78, 78, 78, 78, 77, 49, 30, 1, 1, 1, 1] [2025-03-09 02:41:40,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:41,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:41,029 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:41,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2055829271, now seen corresponding path program 11 times [2025-03-09 02:41:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202783008] [2025-03-09 02:41:41,030 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:41:41,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:41,055 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1542 statements into 116 equivalence classes. [2025-03-09 02:41:41,182 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) and asserted 1226 of 1542 statements. [2025-03-09 02:41:41,183 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2025-03-09 02:41:41,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 87378 backedges. 3712 proven. 10547 refuted. 0 times theorem prover too weak. 73119 trivial. 0 not checked. [2025-03-09 02:41:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202783008] [2025-03-09 02:41:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202783008] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285282438] [2025-03-09 02:41:42,222 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:41:42,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:42,224 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) [2025-03-09 02:41:42,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 02:41:42,568 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1542 statements into 116 equivalence classes. [2025-03-09 02:41:42,893 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) and asserted 1226 of 1542 statements. [2025-03-09 02:41:42,893 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2025-03-09 02:41:42,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 02:41:42,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 87378 backedges. 43676 proven. 1268 refuted. 0 times theorem prover too weak. 42434 trivial. 0 not checked. [2025-03-09 02:41:43,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 87378 backedges. 3627 proven. 10028 refuted. 0 times theorem prover too weak. 73723 trivial. 0 not checked. [2025-03-09 02:41:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285282438] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:45,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 29 [2025-03-09 02:41:45,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759675227] [2025-03-09 02:41:45,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:45,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-09 02:41:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:45,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-09 02:41:45,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2025-03-09 02:41:45,857 INFO L87 Difference]: Start difference. First operand 220 states and 317 transitions. Second operand has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 21 states have call successors, (29), 2 states have call predecessors, (29), 13 states have return successors, (37), 16 states have call predecessors, (37), 21 states have call successors, (37) [2025-03-09 02:41:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,133 INFO L93 Difference]: Finished difference Result 420 states and 625 transitions. [2025-03-09 02:41:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 02:41:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 21 states have call successors, (29), 2 states have call predecessors, (29), 13 states have return successors, (37), 16 states have call predecessors, (37), 21 states have call successors, (37) Word has length 1542 [2025-03-09 02:41:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,135 INFO L225 Difference]: With dead ends: 420 [2025-03-09 02:41:46,135 INFO L226 Difference]: Without dead ends: 205 [2025-03-09 02:41:46,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3125 GetRequests, 3070 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=535, Invalid=1535, Unknown=0, NotChecked=0, Total=2070 [2025-03-09 02:41:46,139 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 190 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 204 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-09 02:41:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 181. [2025-03-09 02:41:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 143 states have internal predecessors, (150), 23 states have call successors, (23), 17 states have call predecessors, (23), 11 states have return successors, (61), 20 states have call predecessors, (61), 22 states have call successors, (61) [2025-03-09 02:41:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 234 transitions. [2025-03-09 02:41:46,156 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 234 transitions. Word has length 1542 [2025-03-09 02:41:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,156 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 234 transitions. [2025-03-09 02:41:46,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 21 states have call successors, (29), 2 states have call predecessors, (29), 13 states have return successors, (37), 16 states have call predecessors, (37), 21 states have call successors, (37) [2025-03-09 02:41:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 234 transitions. [2025-03-09 02:41:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1983 [2025-03-09 02:41:46,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,172 INFO L218 NwaCegarLoop]: trace histogram [203, 201, 164, 101, 101, 101, 101, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1] [2025-03-09 02:41:46,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:46,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:46,373 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1237231386, now seen corresponding path program 12 times [2025-03-09 02:41:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919717390] [2025-03-09 02:41:46,373 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:41:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,402 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1982 statements into 157 equivalence classes. [2025-03-09 02:41:46,527 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) and asserted 1278 of 1982 statements. [2025-03-09 02:41:46,527 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2025-03-09 02:41:46,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 6334 proven. 16825 refuted. 0 times theorem prover too weak. 121613 trivial. 0 not checked. [2025-03-09 02:41:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919717390] [2025-03-09 02:41:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919717390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846403214] [2025-03-09 02:41:48,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:41:48,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:48,242 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) [2025-03-09 02:41:48,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 02:41:48,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1982 statements into 157 equivalence classes. [2025-03-09 02:41:48,993 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) and asserted 1278 of 1982 statements. [2025-03-09 02:41:48,993 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2025-03-09 02:41:48,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 2375 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-09 02:41:49,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 70758 proven. 9071 refuted. 0 times theorem prover too weak. 64943 trivial. 0 not checked. [2025-03-09 02:41:49,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 144772 backedges. 6643 proven. 17634 refuted. 0 times theorem prover too weak. 120495 trivial. 0 not checked. [2025-03-09 02:41:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846403214] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:53,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:53,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 32] total 37 [2025-03-09 02:41:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871377914] [2025-03-09 02:41:53,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:53,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-09 02:41:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:53,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-09 02:41:53,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2025-03-09 02:41:53,241 INFO L87 Difference]: Start difference. First operand 181 states and 234 transitions. Second operand has 37 states, 37 states have (on average 6.027027027027027) internal successors, (223), 37 states have internal predecessors, (223), 32 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (48), 18 states have call predecessors, (48), 31 states have call successors, (48) [2025-03-09 02:41:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:53,907 INFO L93 Difference]: Finished difference Result 442 states and 598 transitions. [2025-03-09 02:41:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-09 02:41:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.027027027027027) internal successors, (223), 37 states have internal predecessors, (223), 32 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (48), 18 states have call predecessors, (48), 31 states have call successors, (48) Word has length 1982 [2025-03-09 02:41:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:53,910 INFO L225 Difference]: With dead ends: 442 [2025-03-09 02:41:53,910 INFO L226 Difference]: Without dead ends: 266 [2025-03-09 02:41:53,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4039 GetRequests, 3947 SyntacticMatches, 17 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1427, Invalid=4425, Unknown=0, NotChecked=0, Total=5852 [2025-03-09 02:41:53,913 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 450 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:53,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 235 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-03-09 02:41:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 208. [2025-03-09 02:41:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 169 states have (on average 1.029585798816568) internal successors, (174), 165 states have internal predecessors, (174), 27 states have call successors, (27), 22 states have call predecessors, (27), 11 states have return successors, (67), 20 states have call predecessors, (67), 26 states have call successors, (67) [2025-03-09 02:41:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 268 transitions. [2025-03-09 02:41:53,927 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 268 transitions. Word has length 1982 [2025-03-09 02:41:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:53,930 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 268 transitions. [2025-03-09 02:41:53,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.027027027027027) internal successors, (223), 37 states have internal predecessors, (223), 32 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (48), 18 states have call predecessors, (48), 31 states have call successors, (48) [2025-03-09 02:41:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 268 transitions. [2025-03-09 02:41:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2025-03-09 02:41:53,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:53,940 INFO L218 NwaCegarLoop]: trace histogram [135, 134, 109, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 66, 42, 26, 1, 1, 1, 1] [2025-03-09 02:41:53,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:54,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:54,140 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:41:54,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash -340997757, now seen corresponding path program 13 times [2025-03-09 02:41:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633914392] [2025-03-09 02:41:54,141 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:41:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:54,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1320 statements into 1 equivalence classes. [2025-03-09 02:41:54,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1320 of 1320 statements. [2025-03-09 02:41:54,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:54,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 63908 backedges. 6687 proven. 4120 refuted. 0 times theorem prover too weak. 53101 trivial. 0 not checked. [2025-03-09 02:41:55,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633914392] [2025-03-09 02:41:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633914392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296953820] [2025-03-09 02:41:55,466 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:41:55,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:55,468 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) [2025-03-09 02:41:55,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 02:41:55,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1320 statements into 1 equivalence classes. [2025-03-09 02:41:56,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1320 of 1320 statements. [2025-03-09 02:41:56,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:56,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:56,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-09 02:41:56,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 63908 backedges. 6371 proven. 8792 refuted. 0 times theorem prover too weak. 48745 trivial. 0 not checked. [2025-03-09 02:41:56,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:42:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 63908 backedges. 6367 proven. 8995 refuted. 0 times theorem prover too weak. 48546 trivial. 0 not checked. [2025-03-09 02:42:00,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296953820] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:42:00,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:42:00,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 32] total 39 [2025-03-09 02:42:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90274452] [2025-03-09 02:42:00,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:42:00,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-09 02:42:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:42:00,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-09 02:42:00,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2025-03-09 02:42:00,059 INFO L87 Difference]: Start difference. First operand 208 states and 268 transitions. Second operand has 39 states, 39 states have (on average 5.512820512820513) internal successors, (215), 39 states have internal predecessors, (215), 32 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (52), 20 states have call predecessors, (52), 32 states have call successors, (52) [2025-03-09 02:42:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:42:00,523 INFO L93 Difference]: Finished difference Result 455 states and 629 transitions. [2025-03-09 02:42:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 02:42:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.512820512820513) internal successors, (215), 39 states have internal predecessors, (215), 32 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (52), 20 states have call predecessors, (52), 32 states have call successors, (52) Word has length 1320 [2025-03-09 02:42:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:42:00,526 INFO L225 Difference]: With dead ends: 455 [2025-03-09 02:42:00,526 INFO L226 Difference]: Without dead ends: 252 [2025-03-09 02:42:00,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2686 GetRequests, 2611 SyntacticMatches, 16 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=902, Invalid=2758, Unknown=0, NotChecked=0, Total=3660 [2025-03-09 02:42:00,531 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 199 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:42:00,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 351 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:42:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-03-09 02:42:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 208. [2025-03-09 02:42:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 166 states have internal predecessors, (173), 28 states have call successors, (28), 23 states have call predecessors, (28), 10 states have return successors, (63), 18 states have call predecessors, (63), 27 states have call successors, (63) [2025-03-09 02:42:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 264 transitions. [2025-03-09 02:42:00,545 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 264 transitions. Word has length 1320 [2025-03-09 02:42:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:42:00,546 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 264 transitions. [2025-03-09 02:42:00,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.512820512820513) internal successors, (215), 39 states have internal predecessors, (215), 32 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (52), 20 states have call predecessors, (52), 32 states have call successors, (52) [2025-03-09 02:42:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 264 transitions. [2025-03-09 02:42:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2813 [2025-03-09 02:42:00,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:42:00,575 INFO L218 NwaCegarLoop]: trace histogram [288, 285, 233, 144, 144, 144, 144, 143, 143, 143, 143, 143, 142, 142, 142, 141, 89, 55, 1, 1, 1, 1] [2025-03-09 02:42:00,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-09 02:42:00,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:00,776 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-09 02:42:00,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:42:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1454639312, now seen corresponding path program 14 times [2025-03-09 02:42:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:42:00,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883991579] [2025-03-09 02:42:00,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:42:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:42:00,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2812 statements into 2 equivalence classes. [2025-03-09 02:42:00,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2812 of 2812 statements. [2025-03-09 02:42:00,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:42:00,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 292157 backedges. 8391 proven. 27699 refuted. 0 times theorem prover too weak. 256067 trivial. 0 not checked. [2025-03-09 02:42:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:42:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883991579] [2025-03-09 02:42:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883991579] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:42:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915958617] [2025-03-09 02:42:08,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:42:08,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:42:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:42:08,030 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) [2025-03-09 02:42:08,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 02:42:08,490 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2812 statements into 2 equivalence classes. [2025-03-09 02:42:08,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2812 of 2812 statements. [2025-03-09 02:42:08,820 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:42:08,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:42:08,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 5214 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-09 02:42:08,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:42:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 292157 backedges. 114499 proven. 20720 refuted. 0 times theorem prover too weak. 156938 trivial. 0 not checked. [2025-03-09 02:42:09,054 INFO L312 TraceCheckSpWp]: Computing backward predicates...