./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.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-simple/fibo_2calls_5-2.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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 02:41:38,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:41:38,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:41:38,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:41:38,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:41:38,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:41:38,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:41:38,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:41:38,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:41:38,241 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:41:38,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:41:38,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:41:38,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:41:38,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:41:38,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:41:38,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:41:38,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:41:38,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:41:38,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:41:38,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:41:38,244 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:41:38,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:41:38,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:41:38,245 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 -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2025-03-09 02:41:38,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:41:38,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:41:38,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:41:38,475 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:41:38,475 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:41:38,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2025-03-09 02:41:39,613 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ac976e7/eb29b3654619475a825964871d7d32bd/FLAG80d05cbee [2025-03-09 02:41:39,828 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:41:39,829 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2025-03-09 02:41:39,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ac976e7/eb29b3654619475a825964871d7d32bd/FLAG80d05cbee [2025-03-09 02:41:40,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ac976e7/eb29b3654619475a825964871d7d32bd [2025-03-09 02:41:40,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:41:40,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:41:40,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:41:40,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:41:40,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:41:40,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2b0628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40, skipping insertion in model container [2025-03-09 02:41:40,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:41:40,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:41:40,293 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:41:40,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:41:40,317 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:41:40,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40 WrapperNode [2025-03-09 02:41:40,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:41:40,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:41:40,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:41:40,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:41:40,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,337 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-03-09 02:41:40,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:41:40,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:41:40,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:41:40,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:41:40,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,360 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 02:41:40,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,362 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:41:40,370 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:41:40,370 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:41:40,370 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:41:40,371 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (1/1) ... [2025-03-09 02:41:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:41:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:40,399 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 02:41:40,404 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 02:41:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:41:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:41:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-03-09 02:41:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-03-09 02:41:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-03-09 02:41:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-03-09 02:41:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:41:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:41:40,466 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:41:40,467 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:41:40,540 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-03-09 02:41:40,571 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-03-09 02:41:40,579 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-09 02:41:40,580 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:41:40,591 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:41:40,591 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:41:40,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:40 BoogieIcfgContainer [2025-03-09 02:41:40,591 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:41:40,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:41:40,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:41:40,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:41:40,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:41:40" (1/3) ... [2025-03-09 02:41:40,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:41:40, skipping insertion in model container [2025-03-09 02:41:40,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:41:40" (2/3) ... [2025-03-09 02:41:40,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2854cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:41:40, skipping insertion in model container [2025-03-09 02:41:40,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:40" (3/3) ... [2025-03-09 02:41:40,599 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2025-03-09 02:41:40,608 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:41:40,609 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_5-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-03-09 02:41:40,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:41:40,656 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;@10f183ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:41:40,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-09 02:41:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-09 02:41:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 02:41:40,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:40,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:40,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:40,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1954105288, now seen corresponding path program 1 times [2025-03-09 02:41:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:40,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355986059] [2025-03-09 02:41:40,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:40,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 02:41:40,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 02:41:40,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:40,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:40,795 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 02:41:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:40,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355986059] [2025-03-09 02:41:40,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355986059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:40,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:41:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279109279] [2025-03-09 02:41:40,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:40,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:41:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:40,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:41:40,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:41:40,817 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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 02:41:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:40,864 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2025-03-09 02:41:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:41:40,865 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 02:41:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:40,870 INFO L225 Difference]: With dead ends: 59 [2025-03-09 02:41:40,871 INFO L226 Difference]: Without dead ends: 45 [2025-03-09 02:41:40,873 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 02:41:40,875 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 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 02:41:40,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-09 02:41:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-03-09 02:41:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-09 02:41:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-03-09 02:41:40,913 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2025-03-09 02:41:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:40,913 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-03-09 02:41:40,913 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 02:41:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-03-09 02:41:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 02:41:40,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:40,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:40,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:41:40,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:40,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -447721764, now seen corresponding path program 1 times [2025-03-09 02:41:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:40,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343460239] [2025-03-09 02:41:40,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:40,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:40,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 02:41:40,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 02:41:40,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:40,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:40,987 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 02:41:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343460239] [2025-03-09 02:41:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343460239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:40,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:40,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:40,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388784075] [2025-03-09 02:41:40,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:40,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:40,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:40,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:40,989 INFO L87 Difference]: Start difference. First operand 43 states and 49 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 02:41:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:41,049 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2025-03-09 02:41:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:41,050 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 02:41:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:41,050 INFO L225 Difference]: With dead ends: 64 [2025-03-09 02:41:41,050 INFO L226 Difference]: Without dead ends: 58 [2025-03-09 02:41:41,051 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 02:41:41,051 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:41,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-09 02:41:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2025-03-09 02:41:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 02:41:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2025-03-09 02:41:41,057 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2025-03-09 02:41:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:41,057 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2025-03-09 02:41:41,057 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 02:41:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2025-03-09 02:41:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 02:41:41,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:41,058 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:41,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 02:41:41,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:41,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2145956475, now seen corresponding path program 1 times [2025-03-09 02:41:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:41,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382983376] [2025-03-09 02:41:41,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:41,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:41,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 02:41:41,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 02:41:41,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:41,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:41,101 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 02:41:41,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:41,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382983376] [2025-03-09 02:41:41,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382983376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:41,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:41,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:41:41,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425005773] [2025-03-09 02:41:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:41,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:41:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:41,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:41:41,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:41:41,104 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:41:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:41,123 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2025-03-09 02:41:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:41:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 02:41:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:41,124 INFO L225 Difference]: With dead ends: 58 [2025-03-09 02:41:41,124 INFO L226 Difference]: Without dead ends: 56 [2025-03-09 02:41:41,125 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 02:41:41,125 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 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 02:41:41,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-09 02:41:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-03-09 02:41:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 02:41:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-03-09 02:41:41,138 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2025-03-09 02:41:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:41,138 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-03-09 02:41:41,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:41:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-03-09 02:41:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 02:41:41,139 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:41,139 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:41,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 02:41:41,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:41,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2100141288, now seen corresponding path program 1 times [2025-03-09 02:41:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945526034] [2025-03-09 02:41:41,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:41,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 02:41:41,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 02:41:41,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:41,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:41,248 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 02:41:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945526034] [2025-03-09 02:41:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945526034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:41,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 02:41:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421967940] [2025-03-09 02:41:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:41,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:41:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:41,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:41:41,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:41:41,252 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:41:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:41,380 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2025-03-09 02:41:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:41:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-09 02:41:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:41,381 INFO L225 Difference]: With dead ends: 58 [2025-03-09 02:41:41,381 INFO L226 Difference]: Without dead ends: 54 [2025-03-09 02:41:41,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-09 02:41:41,383 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:41,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-09 02:41:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-03-09 02:41:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 02:41:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-03-09 02:41:41,394 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2025-03-09 02:41:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:41,394 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-03-09 02:41:41,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:41:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-03-09 02:41:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-09 02:41:41,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:41,395 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:41,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 02:41:41,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:41,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1831817774, now seen corresponding path program 1 times [2025-03-09 02:41:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053862968] [2025-03-09 02:41:41,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:41,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 02:41:41,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 02:41:41,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:41,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:41:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053862968] [2025-03-09 02:41:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053862968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235126848] [2025-03-09 02:41:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:41,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:41,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:41,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:41,494 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:41,530 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2025-03-09 02:41:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:41,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-03-09 02:41:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:41,531 INFO L225 Difference]: With dead ends: 74 [2025-03-09 02:41:41,531 INFO L226 Difference]: Without dead ends: 69 [2025-03-09 02:41:41,532 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 02:41:41,532 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:41,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-09 02:41:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-03-09 02:41:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2025-03-09 02:41:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2025-03-09 02:41:41,544 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2025-03-09 02:41:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:41,544 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2025-03-09 02:41:41,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2025-03-09 02:41:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-09 02:41:41,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:41,546 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:41,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 02:41:41,546 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:41,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -631666365, now seen corresponding path program 1 times [2025-03-09 02:41:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478861006] [2025-03-09 02:41:41,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:41,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:41:41,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:41:41,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:41,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 02:41:41,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478861006] [2025-03-09 02:41:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478861006] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874879230] [2025-03-09 02:41:41,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:41,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:41,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:41,636 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 02:41:41,637 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 02:41:41,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 02:41:41,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 02:41:41,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:41,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:41,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 02:41:41,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:41,749 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874879230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-03-09 02:41:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714345841] [2025-03-09 02:41:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:41,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 02:41:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:41,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 02:41:41,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-09 02:41:41,750 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:41,841 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2025-03-09 02:41:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 02:41:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2025-03-09 02:41:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:41,842 INFO L225 Difference]: With dead ends: 117 [2025-03-09 02:41:41,842 INFO L226 Difference]: Without dead ends: 63 [2025-03-09 02:41:41,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:41:41,843 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:41,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 176 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-03-09 02:41:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-03-09 02:41:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2025-03-09 02:41:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-03-09 02:41:41,848 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 24 [2025-03-09 02:41:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:41,848 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-03-09 02:41:41,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-03-09 02:41:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 02:41:41,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:41,849 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, 1, 1, 1, 1, 1] [2025-03-09 02:41:41,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:41:42,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-09 02:41:42,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:42,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2003454357, now seen corresponding path program 1 times [2025-03-09 02:41:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909108848] [2025-03-09 02:41:42,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:42,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 02:41:42,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 02:41:42,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:42,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-09 02:41:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909108848] [2025-03-09 02:41:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909108848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:42,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681449246] [2025-03-09 02:41:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:42,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:42,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:42,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:42,120 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:42,153 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2025-03-09 02:41:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:42,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2025-03-09 02:41:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:42,154 INFO L225 Difference]: With dead ends: 75 [2025-03-09 02:41:42,154 INFO L226 Difference]: Without dead ends: 73 [2025-03-09 02:41:42,154 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 02:41:42,154 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:42,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-09 02:41:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2025-03-09 02:41:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 56 states have internal predecessors, (61), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2025-03-09 02:41:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-03-09 02:41:42,162 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 29 [2025-03-09 02:41:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:42,162 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-03-09 02:41:42,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-03-09 02:41:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 02:41:42,163 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:42,163 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, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:42,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 02:41:42,163 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:42,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1424432597, now seen corresponding path program 1 times [2025-03-09 02:41:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311837642] [2025-03-09 02:41:42,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:42,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:41:42,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:41:42,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:42,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,210 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 02:41:42,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311837642] [2025-03-09 02:41:42,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311837642] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270671726] [2025-03-09 02:41:42,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:42,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:42,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:42,212 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 02:41:42,214 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 02:41:42,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 02:41:42,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 02:41:42,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:42,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:42,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:42,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:41:42,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270671726] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:42,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-09 02:41:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756739291] [2025-03-09 02:41:42,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:42,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 02:41:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:42,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 02:41:42,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:41:42,473 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-09 02:41:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:42,837 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2025-03-09 02:41:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 02:41:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2025-03-09 02:41:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:42,839 INFO L225 Difference]: With dead ends: 192 [2025-03-09 02:41:42,839 INFO L226 Difference]: Without dead ends: 131 [2025-03-09 02:41:42,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:41:42,841 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 122 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:42,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 651 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-09 02:41:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2025-03-09 02:41:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 92 states have internal predecessors, (103), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (28), 16 states have call predecessors, (28), 14 states have call successors, (28) [2025-03-09 02:41:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2025-03-09 02:41:42,852 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 30 [2025-03-09 02:41:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:42,853 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2025-03-09 02:41:42,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-03-09 02:41:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2025-03-09 02:41:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-09 02:41:42,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:42,854 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:42,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:43,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-09 02:41:43,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2119279126, now seen corresponding path program 2 times [2025-03-09 02:41:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981028747] [2025-03-09 02:41:43,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:43,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,061 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 02:41:43,066 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:41:43,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:43,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981028747] [2025-03-09 02:41:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981028747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163451437] [2025-03-09 02:41:43,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:43,144 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 02:41:43,144 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 02:41:43,168 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-09 02:41:43,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 02:41:43,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:43,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 02:41:43,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:43,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163451437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:43,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-03-09 02:41:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173615686] [2025-03-09 02:41:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:43,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 02:41:43,226 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,251 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2025-03-09 02:41:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:43,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2025-03-09 02:41:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,252 INFO L225 Difference]: With dead ends: 127 [2025-03-09 02:41:43,252 INFO L226 Difference]: Without dead ends: 126 [2025-03-09 02:41:43,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 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 02:41:43,253 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:43,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-03-09 02:41:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2025-03-09 02:41:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (28), 19 states have call predecessors, (28), 14 states have call successors, (28) [2025-03-09 02:41:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 152 transitions. [2025-03-09 02:41:43,264 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 152 transitions. Word has length 42 [2025-03-09 02:41:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,264 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 152 transitions. [2025-03-09 02:41:43,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 152 transitions. [2025-03-09 02:41:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-09 02:41:43,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,265 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,271 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 02:41:43,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,470 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1273143481, now seen corresponding path program 1 times [2025-03-09 02:41:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993189722] [2025-03-09 02:41:43,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 02:41:43,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 02:41:43,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:43,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993189722] [2025-03-09 02:41:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993189722] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033027312] [2025-03-09 02:41:43,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:43,520 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 02:41:43,521 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 02:41:43,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 02:41:43,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 02:41:43,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 02:41:43,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:41:43,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033027312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2025-03-09 02:41:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122749233] [2025-03-09 02:41:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:41:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:41:43,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:41:43,586 INFO L87 Difference]: Start difference. First operand 121 states and 152 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,613 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2025-03-09 02:41:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:41:43,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2025-03-09 02:41:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,614 INFO L225 Difference]: With dead ends: 149 [2025-03-09 02:41:43,615 INFO L226 Difference]: Without dead ends: 148 [2025-03-09 02:41:43,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 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 02:41:43,615 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:43,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 114 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-03-09 02:41:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2025-03-09 02:41:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.145631067961165) internal successors, (118), 103 states have internal predecessors, (118), 17 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (34), 22 states have call predecessors, (34), 16 states have call successors, (34) [2025-03-09 02:41:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2025-03-09 02:41:43,628 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 43 [2025-03-09 02:41:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,628 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2025-03-09 02:41:43,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2025-03-09 02:41:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-09 02:41:43,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,629 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,636 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 02:41:43,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,832 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash -846190875, now seen corresponding path program 1 times [2025-03-09 02:41:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898107401] [2025-03-09 02:41:43,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 02:41:43,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 02:41:43,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-09 02:41:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898107401] [2025-03-09 02:41:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898107401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:43,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:43,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641081631] [2025-03-09 02:41:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:43,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:43,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:43,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:43,885 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:43,915 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2025-03-09 02:41:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2025-03-09 02:41:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:43,916 INFO L225 Difference]: With dead ends: 148 [2025-03-09 02:41:43,916 INFO L226 Difference]: Without dead ends: 147 [2025-03-09 02:41:43,917 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 02:41:43,917 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:43,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-09 02:41:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 128. [2025-03-09 02:41:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 100 states have (on average 1.15) internal successors, (115), 100 states have internal predecessors, (115), 16 states have call successors, (16), 6 states have call predecessors, (16), 8 states have return successors, (31), 21 states have call predecessors, (31), 15 states have call successors, (31) [2025-03-09 02:41:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 162 transitions. [2025-03-09 02:41:43,925 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 162 transitions. Word has length 44 [2025-03-09 02:41:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:43,925 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 162 transitions. [2025-03-09 02:41:43,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 02:41:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 162 transitions. [2025-03-09 02:41:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 02:41:43,927 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:43,927 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:43,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 02:41:43,927 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:43,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -630583103, now seen corresponding path program 1 times [2025-03-09 02:41:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:43,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446346749] [2025-03-09 02:41:43,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:43,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 02:41:43,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 02:41:43,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:43,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 02:41:43,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:43,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446346749] [2025-03-09 02:41:43,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446346749] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:43,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065343255] [2025-03-09 02:41:43,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:43,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:43,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:43,996 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 02:41:43,997 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 02:41:44,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 02:41:44,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 02:41:44,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 02:41:44,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:41:44,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 02:41:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065343255] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:44,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 17 [2025-03-09 02:41:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410658443] [2025-03-09 02:41:44,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:44,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 02:41:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:44,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 02:41:44,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2025-03-09 02:41:44,271 INFO L87 Difference]: Start difference. First operand 128 states and 162 transitions. Second operand has 17 states, 16 states have (on average 4.25) internal successors, (68), 12 states have internal predecessors, (68), 8 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-09 02:41:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:44,580 INFO L93 Difference]: Finished difference Result 274 states and 368 transitions. [2025-03-09 02:41:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 02:41:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 12 states have internal predecessors, (68), 8 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2025-03-09 02:41:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:44,582 INFO L225 Difference]: With dead ends: 274 [2025-03-09 02:41:44,582 INFO L226 Difference]: Without dead ends: 167 [2025-03-09 02:41:44,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2025-03-09 02:41:44,584 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:44,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 292 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 02:41:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-03-09 02:41:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2025-03-09 02:41:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.125) internal successors, (135), 121 states have internal predecessors, (135), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (35), 24 states have call predecessors, (35), 18 states have call successors, (35) [2025-03-09 02:41:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2025-03-09 02:41:44,598 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 57 [2025-03-09 02:41:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:44,598 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2025-03-09 02:41:44,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 12 states have internal predecessors, (68), 8 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-09 02:41:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2025-03-09 02:41:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-09 02:41:44,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:44,599 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:44,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:44,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-09 02:41:44,800 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:44,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash 612165549, now seen corresponding path program 1 times [2025-03-09 02:41:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867605652] [2025-03-09 02:41:44,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:44,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 02:41:44,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 02:41:44,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-09 02:41:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867605652] [2025-03-09 02:41:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867605652] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488593691] [2025-03-09 02:41:44,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:44,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:44,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:44,867 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 02:41:44,868 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 02:41:44,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-09 02:41:44,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-09 02:41:44,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:44,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:44,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 02:41:44,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:45,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 02:41:45,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488593691] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:45,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:45,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 31 [2025-03-09 02:41:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888861781] [2025-03-09 02:41:45,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:45,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 02:41:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:45,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 02:41:45,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2025-03-09 02:41:45,262 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:41:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:45,756 INFO L93 Difference]: Finished difference Result 307 states and 389 transitions. [2025-03-09 02:41:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 02:41:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2025-03-09 02:41:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:45,758 INFO L225 Difference]: With dead ends: 307 [2025-03-09 02:41:45,758 INFO L226 Difference]: Without dead ends: 185 [2025-03-09 02:41:45,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2025-03-09 02:41:45,759 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 253 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:45,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 446 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-09 02:41:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2025-03-09 02:41:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 135 states have internal predecessors, (149), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (33), 26 states have call predecessors, (33), 20 states have call successors, (33) [2025-03-09 02:41:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 203 transitions. [2025-03-09 02:41:45,767 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 203 transitions. Word has length 48 [2025-03-09 02:41:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:45,768 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 203 transitions. [2025-03-09 02:41:45,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-09 02:41:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 203 transitions. [2025-03-09 02:41:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-09 02:41:45,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:45,769 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:45,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:45,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:45,969 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:45,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 78284898, now seen corresponding path program 1 times [2025-03-09 02:41:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534189710] [2025-03-09 02:41:45,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:45,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-09 02:41:45,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-09 02:41:45,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:45,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-09 02:41:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534189710] [2025-03-09 02:41:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534189710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:46,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531752318] [2025-03-09 02:41:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:46,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:46,013 INFO L87 Difference]: Start difference. First operand 171 states and 203 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,032 INFO L93 Difference]: Finished difference Result 176 states and 209 transitions. [2025-03-09 02:41:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:46,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2025-03-09 02:41:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,034 INFO L225 Difference]: With dead ends: 176 [2025-03-09 02:41:46,035 INFO L226 Difference]: Without dead ends: 175 [2025-03-09 02:41:46,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:41:46,036 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-09 02:41:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2025-03-09 02:41:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 135 states have (on average 1.1111111111111112) internal successors, (150), 136 states have internal predecessors, (150), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (33), 27 states have call predecessors, (33), 20 states have call successors, (33) [2025-03-09 02:41:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2025-03-09 02:41:46,047 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 55 [2025-03-09 02:41:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2025-03-09 02:41:46,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2025-03-09 02:41:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-09 02:41:46,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,048 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 02:41:46,048 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1315847725, now seen corresponding path program 1 times [2025-03-09 02:41:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611751700] [2025-03-09 02:41:46,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 02:41:46,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 02:41:46,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:46,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611751700] [2025-03-09 02:41:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611751700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:46,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:46,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663063907] [2025-03-09 02:41:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:46,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:46,100 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,124 INFO L93 Difference]: Finished difference Result 178 states and 210 transitions. [2025-03-09 02:41:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:46,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2025-03-09 02:41:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,125 INFO L225 Difference]: With dead ends: 178 [2025-03-09 02:41:46,126 INFO L226 Difference]: Without dead ends: 177 [2025-03-09 02:41:46,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:41:46,126 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-09 02:41:46,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2025-03-09 02:41:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 135 states have (on average 1.1111111111111112) internal successors, (150), 136 states have internal predecessors, (150), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (33), 27 states have call predecessors, (33), 20 states have call successors, (33) [2025-03-09 02:41:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2025-03-09 02:41:46,134 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 56 [2025-03-09 02:41:46,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,134 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2025-03-09 02:41:46,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2025-03-09 02:41:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-09 02:41:46,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,135 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 02:41:46,135 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1868135450, now seen corresponding path program 1 times [2025-03-09 02:41:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957645198] [2025-03-09 02:41:46,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-09 02:41:46,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-09 02:41:46,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-09 02:41:46,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957645198] [2025-03-09 02:41:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957645198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:46,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391980521] [2025-03-09 02:41:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:46,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:46,171 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,209 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2025-03-09 02:41:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2025-03-09 02:41:46,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,211 INFO L225 Difference]: With dead ends: 178 [2025-03-09 02:41:46,211 INFO L226 Difference]: Without dead ends: 177 [2025-03-09 02:41:46,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:41:46,212 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-09 02:41:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2025-03-09 02:41:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 132 states have (on average 1.106060606060606) internal successors, (146), 133 states have internal predecessors, (146), 20 states have call successors, (20), 9 states have call predecessors, (20), 13 states have return successors, (32), 26 states have call predecessors, (32), 19 states have call successors, (32) [2025-03-09 02:41:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2025-03-09 02:41:46,223 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 56 [2025-03-09 02:41:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,223 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2025-03-09 02:41:46,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2025-03-09 02:41:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 02:41:46,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,224 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 02:41:46,224 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2136573803, now seen corresponding path program 1 times [2025-03-09 02:41:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131745446] [2025-03-09 02:41:46,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 02:41:46,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 02:41:46,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-09 02:41:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131745446] [2025-03-09 02:41:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131745446] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833531659] [2025-03-09 02:41:46,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:46,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:46,327 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 02:41:46,328 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 02:41:46,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 02:41:46,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 02:41:46,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 02:41:46,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:46,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:41:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833531659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:46,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:41:46,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-03-09 02:41:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908463621] [2025-03-09 02:41:46,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 02:41:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 02:41:46,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:46,441 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 02:41:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,509 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2025-03-09 02:41:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 02:41:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2025-03-09 02:41:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,511 INFO L225 Difference]: With dead ends: 204 [2025-03-09 02:41:46,511 INFO L226 Difference]: Without dead ends: 203 [2025-03-09 02:41:46,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:46,512 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 241 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-09 02:41:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 179. [2025-03-09 02:41:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.1079136690647482) internal successors, (154), 141 states have internal predecessors, (154), 21 states have call successors, (21), 9 states have call predecessors, (21), 15 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2025-03-09 02:41:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2025-03-09 02:41:46,522 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 57 [2025-03-09 02:41:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,522 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2025-03-09 02:41:46,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 02:41:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2025-03-09 02:41:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-09 02:41:46,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,523 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,529 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 02:41:46,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:46,727 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -819029127, now seen corresponding path program 1 times [2025-03-09 02:41:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407402572] [2025-03-09 02:41:46,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-09 02:41:46,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-09 02:41:46,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-09 02:41:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407402572] [2025-03-09 02:41:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407402572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:41:46,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:41:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 02:41:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741168208] [2025-03-09 02:41:46,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:41:46,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 02:41:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:46,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 02:41:46,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 02:41:46,768 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:46,787 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2025-03-09 02:41:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 02:41:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2025-03-09 02:41:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:46,789 INFO L225 Difference]: With dead ends: 187 [2025-03-09 02:41:46,789 INFO L226 Difference]: Without dead ends: 186 [2025-03-09 02:41:46,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:41:46,789 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:46,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:41:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-09 02:41:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2025-03-09 02:41:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 141 states have internal predecessors, (152), 21 states have call successors, (21), 9 states have call predecessors, (21), 15 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2025-03-09 02:41:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 212 transitions. [2025-03-09 02:41:46,796 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 212 transitions. Word has length 61 [2025-03-09 02:41:46,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:46,797 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 212 transitions. [2025-03-09 02:41:46,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-09 02:41:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 212 transitions. [2025-03-09 02:41:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-09 02:41:46,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:46,798 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:46,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-09 02:41:46,798 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:46,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash 865568913, now seen corresponding path program 1 times [2025-03-09 02:41:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627715676] [2025-03-09 02:41:46,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:46,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-09 02:41:46,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-09 02:41:46,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-09 02:41:46,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627715676] [2025-03-09 02:41:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627715676] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:46,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847686537] [2025-03-09 02:41:46,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:46,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:46,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:46,933 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 02:41:46,934 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 02:41:46,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-09 02:41:46,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-09 02:41:46,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:46,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:46,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:46,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-09 02:41:47,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-09 02:41:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847686537] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:47,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2025-03-09 02:41:47,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662698107] [2025-03-09 02:41:47,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:47,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 02:41:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:47,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 02:41:47,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2025-03-09 02:41:47,247 INFO L87 Difference]: Start difference. First operand 179 states and 212 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:41:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:47,851 INFO L93 Difference]: Finished difference Result 332 states and 390 transitions. [2025-03-09 02:41:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 02:41:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2025-03-09 02:41:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:47,853 INFO L225 Difference]: With dead ends: 332 [2025-03-09 02:41:47,853 INFO L226 Difference]: Without dead ends: 210 [2025-03-09 02:41:47,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2025-03-09 02:41:47,854 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 132 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:47,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 291 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:41:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-03-09 02:41:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2025-03-09 02:41:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.0859375) internal successors, (139), 132 states have internal predecessors, (139), 20 states have call successors, (20), 9 states have call predecessors, (20), 14 states have return successors, (33), 24 states have call predecessors, (33), 19 states have call successors, (33) [2025-03-09 02:41:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2025-03-09 02:41:47,862 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 74 [2025-03-09 02:41:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:47,862 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2025-03-09 02:41:47,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-09 02:41:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2025-03-09 02:41:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-09 02:41:47,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:47,863 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:47,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:48,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,063 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:48,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1573359769, now seen corresponding path program 1 times [2025-03-09 02:41:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:48,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077310913] [2025-03-09 02:41:48,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:48,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-09 02:41:48,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-09 02:41:48,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-09 02:41:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077310913] [2025-03-09 02:41:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077310913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638767002] [2025-03-09 02:41:48,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:48,160 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 02:41:48,161 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 02:41:48,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-09 02:41:48,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-09 02:41:48,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:41:48,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-09 02:41:48,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-09 02:41:48,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638767002] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:48,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:48,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-03-09 02:41:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651425952] [2025-03-09 02:41:48,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:48,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 02:41:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:48,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 02:41:48,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:41:48,401 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:48,567 INFO L93 Difference]: Finished difference Result 283 states and 324 transitions. [2025-03-09 02:41:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 02:41:48,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 70 [2025-03-09 02:41:48,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:48,569 INFO L225 Difference]: With dead ends: 283 [2025-03-09 02:41:48,569 INFO L226 Difference]: Without dead ends: 173 [2025-03-09 02:41:48,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:41:48,570 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 79 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:48,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 293 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-09 02:41:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2025-03-09 02:41:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.0859375) internal successors, (139), 132 states have internal predecessors, (139), 20 states have call successors, (20), 9 states have call predecessors, (20), 14 states have return successors, (31), 24 states have call predecessors, (31), 19 states have call successors, (31) [2025-03-09 02:41:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2025-03-09 02:41:48,578 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 70 [2025-03-09 02:41:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:48,578 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2025-03-09 02:41:48,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2025-03-09 02:41:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-09 02:41:48,579 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:48,579 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:48,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 02:41:48,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,780 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:48,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:48,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1909073672, now seen corresponding path program 1 times [2025-03-09 02:41:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:48,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722462398] [2025-03-09 02:41:48,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:48,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-09 02:41:48,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-09 02:41:48,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722462398] [2025-03-09 02:41:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722462398] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205728563] [2025-03-09 02:41:48,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:48,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:48,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:48,847 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 02:41:48,848 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 02:41:48,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-09 02:41:48,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-09 02:41:48,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:48,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:48,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:48,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:48,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-09 02:41:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205728563] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:48,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2025-03-09 02:41:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926117528] [2025-03-09 02:41:48,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:48,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 02:41:48,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:48,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 02:41:48,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 02:41:48,998 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-09 02:41:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:49,095 INFO L93 Difference]: Finished difference Result 266 states and 301 transitions. [2025-03-09 02:41:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 02:41:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2025-03-09 02:41:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:49,097 INFO L225 Difference]: With dead ends: 266 [2025-03-09 02:41:49,097 INFO L226 Difference]: Without dead ends: 167 [2025-03-09 02:41:49,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:41:49,097 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:49,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 214 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-03-09 02:41:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2025-03-09 02:41:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 131 states have internal predecessors, (137), 20 states have call successors, (20), 9 states have call predecessors, (20), 14 states have return successors, (30), 23 states have call predecessors, (30), 19 states have call successors, (30) [2025-03-09 02:41:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 187 transitions. [2025-03-09 02:41:49,106 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 187 transitions. Word has length 71 [2025-03-09 02:41:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:49,106 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 187 transitions. [2025-03-09 02:41:49,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-09 02:41:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 187 transitions. [2025-03-09 02:41:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-09 02:41:49,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:49,107 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:49,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:49,307 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,SelfDestructingSolverStorable20 [2025-03-09 02:41:49,307 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:49,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1673098567, now seen corresponding path program 1 times [2025-03-09 02:41:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844704371] [2025-03-09 02:41:49,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:49,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-09 02:41:49,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-09 02:41:49,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-09 02:41:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844704371] [2025-03-09 02:41:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844704371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154943725] [2025-03-09 02:41:49,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:49,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:49,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:49,444 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 02:41:49,445 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 02:41:49,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-09 02:41:49,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-09 02:41:49,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:49,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:49,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 02:41:49,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-09 02:41:49,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-09 02:41:49,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154943725] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:49,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:49,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2025-03-09 02:41:49,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96304261] [2025-03-09 02:41:49,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:49,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-09 02:41:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:49,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-09 02:41:49,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2025-03-09 02:41:49,939 INFO L87 Difference]: Start difference. First operand 164 states and 187 transitions. Second operand has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-09 02:41:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:50,765 INFO L93 Difference]: Finished difference Result 324 states and 377 transitions. [2025-03-09 02:41:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-09 02:41:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 75 [2025-03-09 02:41:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:50,767 INFO L225 Difference]: With dead ends: 324 [2025-03-09 02:41:50,767 INFO L226 Difference]: Without dead ends: 194 [2025-03-09 02:41:50,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=3311, Unknown=0, NotChecked=0, Total=3782 [2025-03-09 02:41:50,770 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 174 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:50,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 350 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-09 02:41:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-03-09 02:41:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 166. [2025-03-09 02:41:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 127 states have (on average 1.078740157480315) internal successors, (137), 133 states have internal predecessors, (137), 20 states have call successors, (20), 9 states have call predecessors, (20), 15 states have return successors, (30), 23 states have call predecessors, (30), 19 states have call successors, (30) [2025-03-09 02:41:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 187 transitions. [2025-03-09 02:41:50,778 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 187 transitions. Word has length 75 [2025-03-09 02:41:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:50,778 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 187 transitions. [2025-03-09 02:41:50,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2025-03-09 02:41:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 187 transitions. [2025-03-09 02:41:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-09 02:41:50,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:50,779 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:50,785 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 02:41:50,980 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,SelfDestructingSolverStorable21 [2025-03-09 02:41:50,980 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:50,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1729310121, now seen corresponding path program 1 times [2025-03-09 02:41:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:50,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358619306] [2025-03-09 02:41:50,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:50,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 02:41:50,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 02:41:50,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:50,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-09 02:41:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358619306] [2025-03-09 02:41:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358619306] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970816964] [2025-03-09 02:41:51,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:51,028 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 02:41:51,030 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 02:41:51,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 02:41:51,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 02:41:51,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:51,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 02:41:51,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:51,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-09 02:41:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970816964] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:51,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 15 [2025-03-09 02:41:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041372269] [2025-03-09 02:41:51,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:51,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 02:41:51,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:51,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 02:41:51,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-09 02:41:51,312 INFO L87 Difference]: Start difference. First operand 166 states and 187 transitions. Second operand has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-09 02:41:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:51,453 INFO L93 Difference]: Finished difference Result 273 states and 311 transitions. [2025-03-09 02:41:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 02:41:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 88 [2025-03-09 02:41:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:51,454 INFO L225 Difference]: With dead ends: 273 [2025-03-09 02:41:51,455 INFO L226 Difference]: Without dead ends: 153 [2025-03-09 02:41:51,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-09 02:41:51,455 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 107 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:51,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 212 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:51,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-09 02:41:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-09 02:41:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 116 states have (on average 1.0689655172413792) internal successors, (124), 122 states have internal predecessors, (124), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2025-03-09 02:41:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 167 transitions. [2025-03-09 02:41:51,473 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 167 transitions. Word has length 88 [2025-03-09 02:41:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:51,473 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 167 transitions. [2025-03-09 02:41:51,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2025-03-09 02:41:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 167 transitions. [2025-03-09 02:41:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-09 02:41:51,474 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:51,474 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:51,480 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 02:41:51,675 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,SelfDestructingSolverStorable22 [2025-03-09 02:41:51,675 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:51,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1757801908, now seen corresponding path program 2 times [2025-03-09 02:41:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326445791] [2025-03-09 02:41:51,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:51,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-03-09 02:41:51,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-03-09 02:41:51,689 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:51,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-09 02:41:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326445791] [2025-03-09 02:41:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326445791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136772108] [2025-03-09 02:41:51,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:51,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:51,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:51,860 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 02:41:51,862 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 02:41:51,883 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-03-09 02:41:51,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-03-09 02:41:51,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:51,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:51,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 02:41:51,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-09 02:41:52,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-09 02:41:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136772108] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:52,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:52,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-03-09 02:41:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133001225] [2025-03-09 02:41:52,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:52,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-09 02:41:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:52,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-09 02:41:52,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2025-03-09 02:41:52,436 INFO L87 Difference]: Start difference. First operand 152 states and 167 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-03-09 02:41:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:52,695 INFO L93 Difference]: Finished difference Result 187 states and 213 transitions. [2025-03-09 02:41:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-09 02:41:52,695 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 89 [2025-03-09 02:41:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:52,696 INFO L225 Difference]: With dead ends: 187 [2025-03-09 02:41:52,696 INFO L226 Difference]: Without dead ends: 185 [2025-03-09 02:41:52,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2025-03-09 02:41:52,697 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:52,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 576 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-09 02:41:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2025-03-09 02:41:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 116 states have (on average 1.0517241379310345) internal successors, (122), 120 states have internal predecessors, (122), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2025-03-09 02:41:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2025-03-09 02:41:52,703 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 89 [2025-03-09 02:41:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:52,703 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2025-03-09 02:41:52,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2025-03-09 02:41:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2025-03-09 02:41:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-09 02:41:52,704 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:52,704 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:52,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 02:41:52,909 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,SelfDestructingSolverStorable23 [2025-03-09 02:41:52,909 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:52,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1342715685, now seen corresponding path program 1 times [2025-03-09 02:41:52,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:52,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677936175] [2025-03-09 02:41:52,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:52,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:52,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-09 02:41:52,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-09 02:41:52,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:52,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-09 02:41:53,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677936175] [2025-03-09 02:41:53,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677936175] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528375865] [2025-03-09 02:41:53,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:53,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:53,112 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 02:41:53,114 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 02:41:53,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-09 02:41:53,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-09 02:41:53,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:53,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-09 02:41:53,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-03-09 02:41:53,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-09 02:41:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528375865] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:53,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:53,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-03-09 02:41:53,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990534970] [2025-03-09 02:41:53,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:53,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-09 02:41:53,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:53,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-09 02:41:53,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-03-09 02:41:53,612 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-09 02:41:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:53,742 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2025-03-09 02:41:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 02:41:53,742 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 90 [2025-03-09 02:41:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:53,743 INFO L225 Difference]: With dead ends: 171 [2025-03-09 02:41:53,743 INFO L226 Difference]: Without dead ends: 156 [2025-03-09 02:41:53,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2025-03-09 02:41:53,744 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:53,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 474 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-09 02:41:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 124. [2025-03-09 02:41:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 100 states have internal predecessors, (100), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (17), 14 states have call predecessors, (17), 14 states have call successors, (17) [2025-03-09 02:41:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2025-03-09 02:41:53,751 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 90 [2025-03-09 02:41:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:53,751 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2025-03-09 02:41:53,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2025-03-09 02:41:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2025-03-09 02:41:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-09 02:41:53,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:53,757 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:53,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 02:41:53,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:53,957 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:53,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 949222217, now seen corresponding path program 1 times [2025-03-09 02:41:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940489721] [2025-03-09 02:41:53,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:53,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-09 02:41:53,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-09 02:41:53,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:53,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-09 02:41:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940489721] [2025-03-09 02:41:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940489721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686304433] [2025-03-09 02:41:54,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:41:54,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:54,036 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 02:41:54,037 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 02:41:54,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-09 02:41:54,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-09 02:41:54,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:41:54,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 02:41:54,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-09 02:41:54,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-03-09 02:41:54,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686304433] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:54,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-03-09 02:41:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202769301] [2025-03-09 02:41:54,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:54,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 02:41:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:54,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 02:41:54,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-09 02:41:54,285 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:54,379 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2025-03-09 02:41:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 02:41:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 124 [2025-03-09 02:41:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:54,381 INFO L225 Difference]: With dead ends: 137 [2025-03-09 02:41:54,382 INFO L226 Difference]: Without dead ends: 122 [2025-03-09 02:41:54,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-09 02:41:54,383 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:54,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 138 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-09 02:41:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2025-03-09 02:41:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 98 states have internal predecessors, (98), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2025-03-09 02:41:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2025-03-09 02:41:54,389 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 124 [2025-03-09 02:41:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:54,389 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2025-03-09 02:41:54,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2025-03-09 02:41:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2025-03-09 02:41:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-09 02:41:54,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:41:54,391 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 02:41:54,397 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 02:41:54,591 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,SelfDestructingSolverStorable25 [2025-03-09 02:41:54,592 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 02:41:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:41:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1239986378, now seen corresponding path program 2 times [2025-03-09 02:41:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:41:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393636866] [2025-03-09 02:41:54,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:41:54,599 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-09 02:41:54,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-09 02:41:54,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:54,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-09 02:41:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:41:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393636866] [2025-03-09 02:41:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393636866] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:41:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725327625] [2025-03-09 02:41:54,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:41:54,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:41:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:41:54,930 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 02:41:54,932 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 02:41:54,963 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-09 02:41:54,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-09 02:41:54,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:41:54,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:41:54,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-09 02:41:54,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:41:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-03-09 02:41:55,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:41:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-03-09 02:41:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725327625] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:41:56,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 02:41:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-03-09 02:41:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267525811] [2025-03-09 02:41:56,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 02:41:56,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-09 02:41:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:41:56,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-09 02:41:56,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-03-09 02:41:56,002 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-09 02:41:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:41:56,135 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2025-03-09 02:41:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 02:41:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 143 [2025-03-09 02:41:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:41:56,136 INFO L225 Difference]: With dead ends: 147 [2025-03-09 02:41:56,136 INFO L226 Difference]: Without dead ends: 0 [2025-03-09 02:41:56,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1879, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 02:41:56,137 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:41:56,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 561 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:41:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-09 02:41:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-09 02:41:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 02:41:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-09 02:41:56,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2025-03-09 02:41:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:41:56,138 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 02:41:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-09 02:41:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-09 02:41:56,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-09 02:41:56,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-03-09 02:41:56,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-03-09 02:41:56,147 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 02:41:56,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-09 02:41:56,344 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:41:56,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-09 02:41:58,064 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 02:41:58,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 02:41:58 BoogieIcfgContainer [2025-03-09 02:41:58,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 02:41:58,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 02:41:58,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 02:41:58,068 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 02:41:58,068 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:41:40" (3/4) ... [2025-03-09 02:41:58,070 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 02:41:58,074 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-03-09 02:41:58,075 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-03-09 02:41:58,077 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-09 02:41:58,077 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-09 02:41:58,077 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-09 02:41:58,077 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 02:41:58,130 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 02:41:58,130 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 02:41:58,130 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 02:41:58,131 INFO L158 Benchmark]: Toolchain (without parser) took 17947.15ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 112.7MB in the beginning and 176.1MB in the end (delta: -63.3MB). Peak memory consumption was 153.8MB. Max. memory is 16.1GB. [2025-03-09 02:41:58,131 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 02:41:58,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 133.64ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 102.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:41:58,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.38ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 101.3MB in the end (delta: 910.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 02:41:58,131 INFO L158 Benchmark]: Boogie Preprocessor took 29.69ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 02:41:58,132 INFO L158 Benchmark]: IcfgBuilder took 221.80ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 87.5MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 02:41:58,132 INFO L158 Benchmark]: TraceAbstraction took 17474.40ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 87.1MB in the beginning and 180.2MB in the end (delta: -93.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB. [2025-03-09 02:41:58,132 INFO L158 Benchmark]: Witness Printer took 62.43ms. Allocated memory is still 360.7MB. Free memory was 180.2MB in the beginning and 176.1MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 02:41:58,136 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 133.64ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 102.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.38ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 101.3MB in the end (delta: 910.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.69ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 221.80ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 87.5MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 17474.40ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 87.1MB in the beginning and 180.2MB in the end (delta: -93.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB. * Witness Printer took 62.43ms. Allocated memory is still 360.7MB. Free memory was 180.2MB in the beginning and 176.1MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 65 edges, 12 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 27, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1363 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1308 mSDsluCounter, 6524 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5545 mSDsCounter, 388 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6181 IncrementalHoareTripleChecker+Invalid, 6569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 388 mSolverCounterUnsat, 979 mSDtfsCounter, 6181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2420 GetRequests, 1911 SyntacticMatches, 69 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4449 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=17, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 299 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2616 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3520 ConstructedInterpolants, 0 QuantifiedInterpolants, 7299 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2391 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 55 InterpolantComputations, 15 PerfectInterpolantSequences, 3109/3915 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 02:41:58,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE