./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:00:07,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:00:07,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:00:07,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:00:07,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:00:07,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:00:07,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:00:07,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:00:07,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:00:07,579 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:00:07,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:00:07,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:00:07,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:00:07,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:00:07,579 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:00:07,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:00:07,580 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:00:07,581 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:00:07,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:00:07,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:00:07,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:00:07,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:00:07,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:00:07,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:00:07,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:00:07,582 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-jdk21/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 -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2025-02-08 10:00:07,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:00:07,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:00:07,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:00:07,808 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:00:07,809 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:00:07,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2025-02-08 10:00:09,056 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/816f9bafc/e39f3b943b07413e8fa95669ff3ddbb1/FLAG5be3065c3 [2025-02-08 10:00:09,301 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:00:09,302 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2025-02-08 10:00:09,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/816f9bafc/e39f3b943b07413e8fa95669ff3ddbb1/FLAG5be3065c3 [2025-02-08 10:00:09,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/816f9bafc/e39f3b943b07413e8fa95669ff3ddbb1 [2025-02-08 10:00:09,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:00:09,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:00:09,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:00:09,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:00:09,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:00:09,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d27e8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09, skipping insertion in model container [2025-02-08 10:00:09,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:00:09,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:00:09,749 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:00:09,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:00:09,769 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:00:09,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09 WrapperNode [2025-02-08 10:00:09,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:00:09,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:00:09,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:00:09,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:00:09,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,791 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-02-08 10:00:09,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:00:09,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:00:09,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:00:09,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:00:09,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,807 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]. [2025-02-08 10:00:09,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,810 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:00:09,815 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:00:09,816 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:00:09,816 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:00:09,818 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (1/1) ... [2025-02-08 10:00:09,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:00:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:09,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:00:09,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:00:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:00:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:00:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-02-08 10:00:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-02-08 10:00:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-02-08 10:00:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-02-08 10:00:09,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:00:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:00:09,912 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:00:09,913 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:00:09,987 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-02-08 10:00:10,010 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-02-08 10:00:10,017 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-02-08 10:00:10,017 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:00:10,023 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:00:10,024 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:00:10,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:10 BoogieIcfgContainer [2025-02-08 10:00:10,024 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:00:10,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:00:10,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:00:10,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:00:10,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:00:09" (1/3) ... [2025-02-08 10:00:10,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ec5049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:00:10, skipping insertion in model container [2025-02-08 10:00:10,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:00:09" (2/3) ... [2025-02-08 10:00:10,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ec5049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:00:10, skipping insertion in model container [2025-02-08 10:00:10,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:10" (3/3) ... [2025-02-08 10:00:10,031 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2025-02-08 10:00:10,040 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:00:10,041 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_5-1.c that has 3 procedures, 49 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-02-08 10:00:10,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:00:10,101 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;@4fbb1e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:00:10,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-02-08 10:00:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 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) [2025-02-08 10:00:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 10:00:10,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,109 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 10:00:10,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1081165007, now seen corresponding path program 1 times [2025-02-08 10:00:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49878441] [2025-02-08 10:00:10,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 10:00:10,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 10:00:10,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:10,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49878441] [2025-02-08 10:00:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49878441] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:10,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:10,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 10:00:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602660509] [2025-02-08 10:00:10,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:10,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:00:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:10,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:00:10,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:00:10,278 INFO L87 Difference]: Start difference. First operand has 49 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-02-08 10:00:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:10,319 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2025-02-08 10:00:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:00:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2025-02-08 10:00:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:10,325 INFO L225 Difference]: With dead ends: 54 [2025-02-08 10:00:10,325 INFO L226 Difference]: Without dead ends: 44 [2025-02-08 10:00:10,327 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 [2025-02-08 10:00:10,330 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 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 [2025-02-08 10:00:10,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-08 10:00:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-02-08 10:00:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 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) [2025-02-08 10:00:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2025-02-08 10:00:10,361 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2025-02-08 10:00:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:10,362 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2025-02-08 10:00:10,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-02-08 10:00:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2025-02-08 10:00:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 10:00:10,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:10,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 10:00:10,364 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -843623136, now seen corresponding path program 1 times [2025-02-08 10:00:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864903643] [2025-02-08 10:00:10,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 10:00:10,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 10:00:10,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864903643] [2025-02-08 10:00:10,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864903643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:10,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 10:00:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260411009] [2025-02-08 10:00:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:10,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:10,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:10,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:10,413 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 3 states have (on average 2.0) 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) [2025-02-08 10:00:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:10,481 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2025-02-08 10:00:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) 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 [2025-02-08 10:00:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:10,482 INFO L225 Difference]: With dead ends: 63 [2025-02-08 10:00:10,482 INFO L226 Difference]: Without dead ends: 57 [2025-02-08 10:00:10,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 10:00:10,483 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 160 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 [2025-02-08 10:00:10,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-08 10:00:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2025-02-08 10:00:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 45 states have internal predecessors, (51), 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) [2025-02-08 10:00:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2025-02-08 10:00:10,492 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2025-02-08 10:00:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:10,492 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2025-02-08 10:00:10,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) 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) [2025-02-08 10:00:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2025-02-08 10:00:10,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 10:00:10,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:10,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 10:00:10,493 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1894040316, now seen corresponding path program 1 times [2025-02-08 10:00:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328831118] [2025-02-08 10:00:10,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 10:00:10,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 10:00:10,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:10,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328831118] [2025-02-08 10:00:10,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328831118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:10,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:10,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 10:00:10,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882151542] [2025-02-08 10:00:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:10,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 10:00:10,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:10,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 10:00:10,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 10:00:10,521 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 10:00:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:10,537 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2025-02-08 10:00:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 10:00:10,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2025-02-08 10:00:10,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:10,538 INFO L225 Difference]: With dead ends: 57 [2025-02-08 10:00:10,538 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 10:00:10,538 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 [2025-02-08 10:00:10,539 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 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 [2025-02-08 10:00:10,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 10:00:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2025-02-08 10:00:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 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) [2025-02-08 10:00:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2025-02-08 10:00:10,545 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2025-02-08 10:00:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:10,545 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2025-02-08 10:00:10,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 10:00:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2025-02-08 10:00:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 10:00:10,546 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:10,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 10:00:10,546 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1414292356, now seen corresponding path program 1 times [2025-02-08 10:00:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774438883] [2025-02-08 10:00:10,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 10:00:10,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 10:00:10,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:10,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774438883] [2025-02-08 10:00:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774438883] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:10,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 10:00:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155505138] [2025-02-08 10:00:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:10,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:10,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:10,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 10:00:10,612 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:10,713 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2025-02-08 10:00:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 10:00:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:10,714 INFO L225 Difference]: With dead ends: 57 [2025-02-08 10:00:10,714 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 10:00:10,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:10,715 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 51 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 96 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 [2025-02-08 10:00:10,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 96 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 10:00:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2025-02-08 10:00:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 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) [2025-02-08 10:00:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2025-02-08 10:00:10,721 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2025-02-08 10:00:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:10,721 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2025-02-08 10:00:10,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 10:00:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2025-02-08 10:00:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 10:00:10,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:10,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 10:00:10,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2051156933, now seen corresponding path program 1 times [2025-02-08 10:00:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332825044] [2025-02-08 10:00:10,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 10:00:10,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 10:00:10,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:10,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332825044] [2025-02-08 10:00:10,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332825044] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:10,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:10,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272643336] [2025-02-08 10:00:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:10,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:10,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:10,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:10,810 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:10,840 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2025-02-08 10:00:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2025-02-08 10:00:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:10,842 INFO L225 Difference]: With dead ends: 73 [2025-02-08 10:00:10,842 INFO L226 Difference]: Without dead ends: 68 [2025-02-08 10:00:10,842 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 [2025-02-08 10:00:10,842 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 144 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 [2025-02-08 10:00:10,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-08 10:00:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2025-02-08 10:00:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 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) [2025-02-08 10:00:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2025-02-08 10:00:10,849 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2025-02-08 10:00:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:10,849 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2025-02-08 10:00:10,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2025-02-08 10:00:10,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 10:00:10,850 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:10,850 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] [2025-02-08 10:00:10,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 10:00:10,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:10,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash -286356789, now seen corresponding path program 1 times [2025-02-08 10:00:10,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:10,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145843605] [2025-02-08 10:00:10,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:10,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:00:10,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:00:10,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 10:00:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145843605] [2025-02-08 10:00:10,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145843605] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:10,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816777755] [2025-02-08 10:00:10,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:10,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:10,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 10:00:10,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 10:00:10,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 10:00:10,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:10,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:10,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 10:00:10,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:11,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816777755] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:11,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:11,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-02-08 10:00:11,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373661863] [2025-02-08 10:00:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:11,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:11,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:11,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:00:11,020 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-02-08 10:00:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:11,100 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2025-02-08 10:00:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 23 [2025-02-08 10:00:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:11,101 INFO L225 Difference]: With dead ends: 112 [2025-02-08 10:00:11,101 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 10:00:11,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:00:11,102 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:11,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 147 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 10:00:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-02-08 10:00:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-08 10:00:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2025-02-08 10:00:11,109 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2025-02-08 10:00:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:11,109 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2025-02-08 10:00:11,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-02-08 10:00:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2025-02-08 10:00:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-08 10:00:11,110 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:11,110 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:11,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 10:00:11,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:11,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:11,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1517966263, now seen corresponding path program 1 times [2025-02-08 10:00:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066011947] [2025-02-08 10:00:11,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:11,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 10:00:11,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 10:00:11,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:11,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:00:11,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066011947] [2025-02-08 10:00:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066011947] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378440676] [2025-02-08 10:00:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:11,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:11,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:11,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:11,397 INFO L87 Difference]: Start difference. First operand 58 states and 70 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) [2025-02-08 10:00:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:11,429 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2025-02-08 10:00:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:11,430 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 24 [2025-02-08 10:00:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:11,431 INFO L225 Difference]: With dead ends: 82 [2025-02-08 10:00:11,432 INFO L226 Difference]: Without dead ends: 77 [2025-02-08 10:00:11,432 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 [2025-02-08 10:00:11,433 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:11,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-08 10:00:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2025-02-08 10:00:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.18) internal successors, (59), 54 states have internal predecessors, (59), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2025-02-08 10:00:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2025-02-08 10:00:11,443 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2025-02-08 10:00:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:11,443 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2025-02-08 10:00:11,443 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) [2025-02-08 10:00:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2025-02-08 10:00:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 10:00:11,444 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:11,444 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] [2025-02-08 10:00:11,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 10:00:11,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:11,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1398651106, now seen corresponding path program 1 times [2025-02-08 10:00:11,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644645253] [2025-02-08 10:00:11,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:11,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:11,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 10:00:11,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 10:00:11,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:11,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-08 10:00:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644645253] [2025-02-08 10:00:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644645253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:11,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:11,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972584427] [2025-02-08 10:00:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:11,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:11,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:11,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:11,498 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-02-08 10:00:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:11,526 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2025-02-08 10:00:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 28 [2025-02-08 10:00:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:11,528 INFO L225 Difference]: With dead ends: 82 [2025-02-08 10:00:11,529 INFO L226 Difference]: Without dead ends: 80 [2025-02-08 10:00:11,530 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 [2025-02-08 10:00:11,530 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:11,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 120 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-08 10:00:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2025-02-08 10:00:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2025-02-08 10:00:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2025-02-08 10:00:11,545 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2025-02-08 10:00:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:11,545 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2025-02-08 10:00:11,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-02-08 10:00:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2025-02-08 10:00:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 10:00:11,547 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:11,548 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:11,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 10:00:11,548 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:11,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1361651781, now seen corresponding path program 1 times [2025-02-08 10:00:11,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:11,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088653504] [2025-02-08 10:00:11,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:11,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:11,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:00:11,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:00:11,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:11,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-08 10:00:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088653504] [2025-02-08 10:00:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088653504] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494829266] [2025-02-08 10:00:11,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:11,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:11,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:11,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:11,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 10:00:11,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 10:00:11,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 10:00:11,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:11,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:11,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 10:00:11,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 10:00:11,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494829266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2025-02-08 10:00:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476166125] [2025-02-08 10:00:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:11,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 10:00:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:11,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 10:00:11,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-08 10:00:11,744 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:11,824 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2025-02-08 10:00:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 10:00:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-02-08 10:00:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:11,825 INFO L225 Difference]: With dead ends: 140 [2025-02-08 10:00:11,826 INFO L226 Difference]: Without dead ends: 75 [2025-02-08 10:00:11,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-08 10:00:11,828 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 170 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 [2025-02-08 10:00:11,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 170 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-02-08 10:00:11,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2025-02-08 10:00:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 58 states have internal predecessors, (63), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2025-02-08 10:00:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2025-02-08 10:00:11,839 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 38 [2025-02-08 10:00:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:11,839 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2025-02-08 10:00:11,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2025-02-08 10:00:11,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 10:00:11,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:11,839 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] [2025-02-08 10:00:11,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 10:00:12,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:12,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:12,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1287366459, now seen corresponding path program 1 times [2025-02-08 10:00:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:12,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584425143] [2025-02-08 10:00:12,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:12,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:12,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:00:12,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:00:12,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:12,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 10:00:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584425143] [2025-02-08 10:00:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584425143] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937053318] [2025-02-08 10:00:12,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:12,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:12,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:12,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:12,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 10:00:12,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 10:00:12,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 10:00:12,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:12,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:12,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 10:00:12,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:12,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:12,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937053318] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:12,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:12,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-08 10:00:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707829060] [2025-02-08 10:00:12,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:12,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 10:00:12,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:12,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 10:00:12,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-02-08 10:00:12,334 INFO L87 Difference]: Start difference. First operand 73 states and 93 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) [2025-02-08 10:00:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:12,736 INFO L93 Difference]: Finished difference Result 186 states and 248 transitions. [2025-02-08 10:00:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:00:12,737 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 29 [2025-02-08 10:00:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:12,737 INFO L225 Difference]: With dead ends: 186 [2025-02-08 10:00:12,738 INFO L226 Difference]: Without dead ends: 121 [2025-02-08 10:00:12,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2025-02-08 10:00:12,739 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 93 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:12,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 512 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-08 10:00:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2025-02-08 10:00:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 84 states have internal predecessors, (92), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (29), 15 states have call predecessors, (29), 13 states have call successors, (29) [2025-02-08 10:00:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2025-02-08 10:00:12,764 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 29 [2025-02-08 10:00:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:12,765 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2025-02-08 10:00:12,765 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) [2025-02-08 10:00:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2025-02-08 10:00:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-08 10:00:12,765 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:12,765 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-08 10:00:12,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 10:00:12,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:12,966 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:12,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash 213329502, now seen corresponding path program 1 times [2025-02-08 10:00:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314235586] [2025-02-08 10:00:12,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:12,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 10:00:12,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 10:00:12,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:12,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-08 10:00:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314235586] [2025-02-08 10:00:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314235586] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750562509] [2025-02-08 10:00:13,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:13,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:13,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 10:00:13,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 10:00:13,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 10:00:13,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:13,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:13,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:13,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:13,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750562509] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:13,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:13,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2025-02-08 10:00:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319365023] [2025-02-08 10:00:13,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 10:00:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:13,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 10:00:13,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:00:13,597 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 23 states, 21 states have (on average 3.238095238095238) internal successors, (68), 17 states have internal predecessors, (68), 11 states have call successors, (14), 8 states have call predecessors, (14), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:00:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:14,262 INFO L93 Difference]: Finished difference Result 259 states and 340 transitions. [2025-02-08 10:00:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 10:00:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.238095238095238) internal successors, (68), 17 states have internal predecessors, (68), 11 states have call successors, (14), 8 states have call predecessors, (14), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2025-02-08 10:00:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:14,263 INFO L225 Difference]: With dead ends: 259 [2025-02-08 10:00:14,264 INFO L226 Difference]: Without dead ends: 168 [2025-02-08 10:00:14,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2025-02-08 10:00:14,265 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 161 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:14,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 681 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 10:00:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-02-08 10:00:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2025-02-08 10:00:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 118 states have internal predecessors, (132), 20 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (43), 23 states have call predecessors, (43), 19 states have call successors, (43) [2025-02-08 10:00:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2025-02-08 10:00:14,274 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 35 [2025-02-08 10:00:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:14,274 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2025-02-08 10:00:14,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.238095238095238) internal successors, (68), 17 states have internal predecessors, (68), 11 states have call successors, (14), 8 states have call predecessors, (14), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-08 10:00:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2025-02-08 10:00:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 10:00:14,275 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:14,276 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2025-02-08 10:00:14,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:14,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-08 10:00:14,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:14,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash 213699356, now seen corresponding path program 2 times [2025-02-08 10:00:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:14,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-02-08 10:00:14,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:14,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:14,481 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-08 10:00:14,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:00:14,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:14,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 10:00:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-02-08 10:00:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400860130] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29652131] [2025-02-08 10:00:14,544 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:14,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:14,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:14,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:14,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 10:00:14,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-08 10:00:14,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 10:00:14,595 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:14,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:14,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 10:00:14,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 10:00:14,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29652131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:14,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 10:00:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438143581] [2025-02-08 10:00:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:14,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:14,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:14,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:14,645 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:14,685 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2025-02-08 10:00:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2025-02-08 10:00:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:14,686 INFO L225 Difference]: With dead ends: 157 [2025-02-08 10:00:14,686 INFO L226 Difference]: Without dead ends: 156 [2025-02-08 10:00:14,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 10:00:14,687 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:14,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:14,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-02-08 10:00:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2025-02-08 10:00:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 119 states have (on average 1.1428571428571428) internal successors, (136), 120 states have internal predecessors, (136), 20 states have call successors, (20), 7 states have call predecessors, (20), 10 states have return successors, (43), 25 states have call predecessors, (43), 19 states have call successors, (43) [2025-02-08 10:00:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 199 transitions. [2025-02-08 10:00:14,710 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 199 transitions. Word has length 50 [2025-02-08 10:00:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:14,710 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 199 transitions. [2025-02-08 10:00:14,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-08 10:00:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 199 transitions. [2025-02-08 10:00:14,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 10:00:14,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:14,711 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] [2025-02-08 10:00:14,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:14,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 10:00:14,916 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:14,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1048865866, now seen corresponding path program 1 times [2025-02-08 10:00:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-08 10:00:14,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:14,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 10:00:14,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 10:00:14,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:14,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 10:00:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:15,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607324875] [2025-02-08 10:00:15,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607324875] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:15,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705659608] [2025-02-08 10:00:15,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:15,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:15,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:15,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:15,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 10:00:15,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 10:00:15,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 10:00:15,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:15,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:15,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 10:00:15,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:15,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705659608] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:15,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2025-02-08 10:00:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603027797] [2025-02-08 10:00:15,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:15,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 10:00:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:15,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 10:00:15,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2025-02-08 10:00:15,400 INFO L87 Difference]: Start difference. First operand 153 states and 199 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:15,701 INFO L93 Difference]: Finished difference Result 324 states and 423 transitions. [2025-02-08 10:00:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:00:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 42 [2025-02-08 10:00:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:15,702 INFO L225 Difference]: With dead ends: 324 [2025-02-08 10:00:15,702 INFO L226 Difference]: Without dead ends: 191 [2025-02-08 10:00:15,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2025-02-08 10:00:15,703 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 116 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:15,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 653 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-02-08 10:00:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2025-02-08 10:00:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 136 states have (on average 1.1397058823529411) internal successors, (155), 136 states have internal predecessors, (155), 23 states have call successors, (23), 8 states have call predecessors, (23), 11 states have return successors, (51), 29 states have call predecessors, (51), 22 states have call successors, (51) [2025-02-08 10:00:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2025-02-08 10:00:15,712 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 42 [2025-02-08 10:00:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:15,712 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2025-02-08 10:00:15,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2025-02-08 10:00:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-08 10:00:15,713 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:15,713 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] [2025-02-08 10:00:15,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:15,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 10:00:15,917 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:15,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1924773865, now seen corresponding path program 1 times [2025-02-08 10:00:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:15,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404766204] [2025-02-08 10:00:15,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:15,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 10:00:15,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 10:00:15,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:15,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-08 10:00:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404766204] [2025-02-08 10:00:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404766204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:15,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56150919] [2025-02-08 10:00:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:15,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:15,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:15,972 INFO L87 Difference]: Start difference. First operand 174 states and 229 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) [2025-02-08 10:00:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:15,996 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2025-02-08 10:00:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:15,996 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 43 [2025-02-08 10:00:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:15,997 INFO L225 Difference]: With dead ends: 190 [2025-02-08 10:00:15,997 INFO L226 Difference]: Without dead ends: 189 [2025-02-08 10:00:15,998 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 [2025-02-08 10:00:15,998 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:15,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 119 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-08 10:00:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 170. [2025-02-08 10:00:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 133 states have internal predecessors, (152), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 28 states have call predecessors, (48), 21 states have call successors, (48) [2025-02-08 10:00:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 222 transitions. [2025-02-08 10:00:16,006 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 222 transitions. Word has length 43 [2025-02-08 10:00:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:16,007 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 222 transitions. [2025-02-08 10:00:16,007 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) [2025-02-08 10:00:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 222 transitions. [2025-02-08 10:00:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 10:00:16,007 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:16,007 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] [2025-02-08 10:00:16,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 10:00:16,008 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:16,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1990240979, now seen corresponding path program 2 times [2025-02-08 10:00:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168812705] [2025-02-08 10:00:16,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:16,010 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 10:00:16,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:16,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:16,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168812705] [2025-02-08 10:00:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168812705] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509665093] [2025-02-08 10:00:16,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:16,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:16,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:16,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:16,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 10:00:16,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 10:00:16,145 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 10:00:16,145 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:16,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:16,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 10:00:16,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:16,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509665093] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:16,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-08 10:00:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248950226] [2025-02-08 10:00:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:16,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:16,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:16,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:00:16,194 INFO L87 Difference]: Start difference. First operand 170 states and 222 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:16,225 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2025-02-08 10:00:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:16,231 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2025-02-08 10:00:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:16,232 INFO L225 Difference]: With dead ends: 180 [2025-02-08 10:00:16,232 INFO L226 Difference]: Without dead ends: 179 [2025-02-08 10:00:16,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 10:00:16,233 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 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 [2025-02-08 10:00:16,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-02-08 10:00:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2025-02-08 10:00:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 139 states have (on average 1.1366906474820144) internal successors, (158), 136 states have internal predecessors, (158), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 31 states have call predecessors, (48), 21 states have call successors, (48) [2025-02-08 10:00:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2025-02-08 10:00:16,241 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 47 [2025-02-08 10:00:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:16,241 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2025-02-08 10:00:16,241 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 10:00:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2025-02-08 10:00:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-08 10:00:16,242 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:16,242 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] [2025-02-08 10:00:16,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:16,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:16,442 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:16,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1567928202, now seen corresponding path program 1 times [2025-02-08 10:00:16,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657891642] [2025-02-08 10:00:16,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:16,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-08 10:00:16,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 10:00:16,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:16,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 10:00:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657891642] [2025-02-08 10:00:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657891642] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693545338] [2025-02-08 10:00:16,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:16,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:16,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:16,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 10:00:16,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-08 10:00:16,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 10:00:16,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:16,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:16,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 10:00:16,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 10:00:16,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 10:00:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693545338] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:17,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:17,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2025-02-08 10:00:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264437160] [2025-02-08 10:00:17,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:17,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:00:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:17,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:00:17,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:00:17,020 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:17,505 INFO L93 Difference]: Finished difference Result 357 states and 483 transitions. [2025-02-08 10:00:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 10:00:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2025-02-08 10:00:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:17,509 INFO L225 Difference]: With dead ends: 357 [2025-02-08 10:00:17,509 INFO L226 Difference]: Without dead ends: 214 [2025-02-08 10:00:17,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2025-02-08 10:00:17,513 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 210 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:17,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 294 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-08 10:00:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 189. [2025-02-08 10:00:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 147 states have internal predecessors, (170), 23 states have call successors, (23), 9 states have call predecessors, (23), 13 states have return successors, (46), 32 states have call predecessors, (46), 22 states have call successors, (46) [2025-02-08 10:00:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 239 transitions. [2025-02-08 10:00:17,527 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 239 transitions. Word has length 48 [2025-02-08 10:00:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:17,527 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 239 transitions. [2025-02-08 10:00:17,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 15 states have internal predecessors, (64), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-08 10:00:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 239 transitions. [2025-02-08 10:00:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 10:00:17,528 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:17,529 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-02-08 10:00:17,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 10:00:17,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 10:00:17,729 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:17,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -427555695, now seen corresponding path program 1 times [2025-02-08 10:00:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703680746] [2025-02-08 10:00:17,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:17,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:00:17,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:00:17,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:17,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-08 10:00:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703680746] [2025-02-08 10:00:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703680746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036489536] [2025-02-08 10:00:17,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:17,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:17,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:17,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 10:00:17,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:00:17,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:00:17,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:17,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:17,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 10:00:17,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:00:18,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 10:00:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036489536] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:18,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:18,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2025-02-08 10:00:18,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695069015] [2025-02-08 10:00:18,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:18,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:00:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:18,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:00:18,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:00:18,217 INFO L87 Difference]: Start difference. First operand 189 states and 239 transitions. Second operand has 17 states, 16 states have (on average 4.25) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-08 10:00:18,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:18,467 INFO L93 Difference]: Finished difference Result 353 states and 455 transitions. [2025-02-08 10:00:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 10:00:18,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 60 [2025-02-08 10:00:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:18,471 INFO L225 Difference]: With dead ends: 353 [2025-02-08 10:00:18,471 INFO L226 Difference]: Without dead ends: 198 [2025-02-08 10:00:18,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2025-02-08 10:00:18,472 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 166 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:18,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 192 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-02-08 10:00:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2025-02-08 10:00:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 145 states have (on average 1.1448275862068966) internal successors, (166), 145 states have internal predecessors, (166), 23 states have call successors, (23), 9 states have call predecessors, (23), 13 states have return successors, (38), 30 states have call predecessors, (38), 22 states have call successors, (38) [2025-02-08 10:00:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 227 transitions. [2025-02-08 10:00:18,480 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 227 transitions. Word has length 60 [2025-02-08 10:00:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:18,481 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 227 transitions. [2025-02-08 10:00:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 13 states have internal predecessors, (68), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-02-08 10:00:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 227 transitions. [2025-02-08 10:00:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-08 10:00:18,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:18,481 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] [2025-02-08 10:00:18,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:18,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:18,682 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:18,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash -238198324, now seen corresponding path program 1 times [2025-02-08 10:00:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:18,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645484495] [2025-02-08 10:00:18,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:18,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:18,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 10:00:18,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 10:00:18,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:18,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 10:00:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645484495] [2025-02-08 10:00:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645484495] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213765866] [2025-02-08 10:00:18,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:18,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:18,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:18,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 10:00:18,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 10:00:18,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 10:00:18,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:18,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:18,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 10:00:18,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-08 10:00:18,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 10:00:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213765866] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 10:00:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2025-02-08 10:00:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46453944] [2025-02-08 10:00:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:18,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 10:00:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:18,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 10:00:18,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:18,928 INFO L87 Difference]: Start difference. First operand 185 states and 227 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-08 10:00:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:18,979 INFO L93 Difference]: Finished difference Result 228 states and 298 transitions. [2025-02-08 10:00:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 10:00:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 56 [2025-02-08 10:00:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:18,981 INFO L225 Difference]: With dead ends: 228 [2025-02-08 10:00:18,981 INFO L226 Difference]: Without dead ends: 227 [2025-02-08 10:00:18,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-08 10:00:18,982 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:18,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 202 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-02-08 10:00:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 202. [2025-02-08 10:00:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 159 states have (on average 1.150943396226415) internal successors, (183), 157 states have internal predecessors, (183), 24 states have call successors, (24), 9 states have call predecessors, (24), 15 states have return successors, (49), 35 states have call predecessors, (49), 23 states have call successors, (49) [2025-02-08 10:00:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 256 transitions. [2025-02-08 10:00:18,993 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 256 transitions. Word has length 56 [2025-02-08 10:00:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:18,993 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 256 transitions. [2025-02-08 10:00:18,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2025-02-08 10:00:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 256 transitions. [2025-02-08 10:00:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 10:00:18,995 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:18,995 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] [2025-02-08 10:00:19,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 10:00:19,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 10:00:19,199 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:19,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 426325884, now seen corresponding path program 1 times [2025-02-08 10:00:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:19,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828005834] [2025-02-08 10:00:19,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:19,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 10:00:19,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 10:00:19,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:19,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-08 10:00:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828005834] [2025-02-08 10:00:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828005834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98638792] [2025-02-08 10:00:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:19,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:19,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:19,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:19,240 INFO L87 Difference]: Start difference. First operand 202 states and 256 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-02-08 10:00:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:19,263 INFO L93 Difference]: Finished difference Result 209 states and 264 transitions. [2025-02-08 10:00:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 59 [2025-02-08 10:00:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:19,264 INFO L225 Difference]: With dead ends: 209 [2025-02-08 10:00:19,264 INFO L226 Difference]: Without dead ends: 208 [2025-02-08 10:00:19,265 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 [2025-02-08 10:00:19,265 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 141 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 [2025-02-08 10:00:19,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 141 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-02-08 10:00:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2025-02-08 10:00:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 157 states have internal predecessors, (181), 24 states have call successors, (24), 9 states have call predecessors, (24), 15 states have return successors, (49), 35 states have call predecessors, (49), 23 states have call successors, (49) [2025-02-08 10:00:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 254 transitions. [2025-02-08 10:00:19,273 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 254 transitions. Word has length 59 [2025-02-08 10:00:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:19,274 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 254 transitions. [2025-02-08 10:00:19,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-02-08 10:00:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 254 transitions. [2025-02-08 10:00:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 10:00:19,275 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:19,275 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] [2025-02-08 10:00:19,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 10:00:19,275 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:19,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 331200496, now seen corresponding path program 1 times [2025-02-08 10:00:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249493946] [2025-02-08 10:00:19,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:19,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 10:00:19,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 10:00:19,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:19,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-08 10:00:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249493946] [2025-02-08 10:00:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249493946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 10:00:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 10:00:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 10:00:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013179073] [2025-02-08 10:00:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 10:00:19,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 10:00:19,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:19,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 10:00:19,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 10:00:19,309 INFO L87 Difference]: Start difference. First operand 202 states and 254 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2025-02-08 10:00:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:19,330 INFO L93 Difference]: Finished difference Result 209 states and 261 transitions. [2025-02-08 10:00:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 10:00:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 60 [2025-02-08 10:00:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:19,332 INFO L225 Difference]: With dead ends: 209 [2025-02-08 10:00:19,332 INFO L226 Difference]: Without dead ends: 208 [2025-02-08 10:00:19,332 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 [2025-02-08 10:00:19,332 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 141 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 [2025-02-08 10:00:19,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 141 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 10:00:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-02-08 10:00:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2025-02-08 10:00:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 163 states have (on average 1.1226993865030674) internal successors, (183), 161 states have internal predecessors, (183), 24 states have call successors, (24), 9 states have call predecessors, (24), 16 states have return successors, (50), 36 states have call predecessors, (50), 23 states have call successors, (50) [2025-02-08 10:00:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2025-02-08 10:00:19,341 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 60 [2025-02-08 10:00:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:19,341 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2025-02-08 10:00:19,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2025-02-08 10:00:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2025-02-08 10:00:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-08 10:00:19,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:19,342 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] [2025-02-08 10:00:19,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 10:00:19,342 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:19,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -728475339, now seen corresponding path program 1 times [2025-02-08 10:00:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688581496] [2025-02-08 10:00:19,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:19,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:19,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-08 10:00:19,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 10:00:19,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:19,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 10:00:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688581496] [2025-02-08 10:00:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688581496] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614007785] [2025-02-08 10:00:19,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:19,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:19,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:19,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:19,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 10:00:19,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-08 10:00:19,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 10:00:19,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:19,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:19,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 10:00:19,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-08 10:00:19,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-08 10:00:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614007785] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:19,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:19,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2025-02-08 10:00:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959333153] [2025-02-08 10:00:19,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:19,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 10:00:19,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:19,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 10:00:19,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2025-02-08 10:00:19,807 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 25 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 22 states have internal predecessors, (83), 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) [2025-02-08 10:00:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:20,392 INFO L93 Difference]: Finished difference Result 370 states and 475 transitions. [2025-02-08 10:00:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 10:00:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 22 states have internal predecessors, (83), 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 73 [2025-02-08 10:00:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:20,394 INFO L225 Difference]: With dead ends: 370 [2025-02-08 10:00:20,394 INFO L226 Difference]: Without dead ends: 219 [2025-02-08 10:00:20,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 10:00:20,396 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 139 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:20,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 282 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 10:00:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-02-08 10:00:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 195. [2025-02-08 10:00:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 151 states have (on average 1.0927152317880795) internal successors, (165), 155 states have internal predecessors, (165), 24 states have call successors, (24), 9 states have call predecessors, (24), 16 states have return successors, (38), 30 states have call predecessors, (38), 23 states have call successors, (38) [2025-02-08 10:00:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 227 transitions. [2025-02-08 10:00:20,407 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 227 transitions. Word has length 73 [2025-02-08 10:00:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:20,407 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 227 transitions. [2025-02-08 10:00:20,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 22 states have internal predecessors, (83), 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) [2025-02-08 10:00:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 227 transitions. [2025-02-08 10:00:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-08 10:00:20,408 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:20,409 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] [2025-02-08 10:00:20,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 10:00:20,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-08 10:00:20,609 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:20,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash -497632994, now seen corresponding path program 1 times [2025-02-08 10:00:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:20,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974513571] [2025-02-08 10:00:20,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:20,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-08 10:00:20,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-08 10:00:20,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:20,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 10:00:20,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974513571] [2025-02-08 10:00:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974513571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021885767] [2025-02-08 10:00:20,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:20,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:20,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:20,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 10:00:20,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-08 10:00:20,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-08 10:00:20,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:20,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:20,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 10:00:20,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-02-08 10:00:20,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-08 10:00:21,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021885767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:21,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:21,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2025-02-08 10:00:21,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098056896] [2025-02-08 10:00:21,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:21,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-08 10:00:21,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:21,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-08 10:00:21,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2025-02-08 10:00:21,287 INFO L87 Difference]: Start difference. First operand 195 states and 227 transitions. Second operand has 30 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 27 states have internal predecessors, (101), 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) [2025-02-08 10:00:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:22,156 INFO L93 Difference]: Finished difference Result 398 states and 483 transitions. [2025-02-08 10:00:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-08 10:00:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 27 states have internal predecessors, (101), 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 74 [2025-02-08 10:00:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:22,158 INFO L225 Difference]: With dead ends: 398 [2025-02-08 10:00:22,158 INFO L226 Difference]: Without dead ends: 224 [2025-02-08 10:00:22,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=497, Invalid=3409, Unknown=0, NotChecked=0, Total=3906 [2025-02-08 10:00:22,160 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 193 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:22,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 322 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 10:00:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-02-08 10:00:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 191. [2025-02-08 10:00:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 147 states have (on average 1.0748299319727892) internal successors, (158), 152 states have internal predecessors, (158), 22 states have call successors, (22), 9 states have call predecessors, (22), 18 states have return successors, (47), 29 states have call predecessors, (47), 21 states have call successors, (47) [2025-02-08 10:00:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2025-02-08 10:00:22,168 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 74 [2025-02-08 10:00:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:22,169 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2025-02-08 10:00:22,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 27 states have internal predecessors, (101), 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) [2025-02-08 10:00:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2025-02-08 10:00:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-08 10:00:22,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:22,170 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] [2025-02-08 10:00:22,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 10:00:22,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:22,374 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:22,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1092807293, now seen corresponding path program 1 times [2025-02-08 10:00:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:22,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804287952] [2025-02-08 10:00:22,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:22,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 10:00:22,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 10:00:22,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:22,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-08 10:00:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804287952] [2025-02-08 10:00:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804287952] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058416617] [2025-02-08 10:00:22,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:22,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:22,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:22,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:22,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 10:00:22,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-08 10:00:22,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-08 10:00:22,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:22,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:22,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 10:00:22,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 10:00:22,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-08 10:00:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058416617] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:23,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 15] total 33 [2025-02-08 10:00:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457852731] [2025-02-08 10:00:23,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:23,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 10:00:23,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:23,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 10:00:23,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 10:00:23,145 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 9 states have call successors, (19) [2025-02-08 10:00:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:23,538 INFO L93 Difference]: Finished difference Result 292 states and 370 transitions. [2025-02-08 10:00:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 10:00:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 9 states have call successors, (19) Word has length 88 [2025-02-08 10:00:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:23,541 INFO L225 Difference]: With dead ends: 292 [2025-02-08 10:00:23,541 INFO L226 Difference]: Without dead ends: 290 [2025-02-08 10:00:23,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=1868, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 10:00:23,542 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:23,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 687 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-02-08 10:00:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 224. [2025-02-08 10:00:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 174 states have (on average 1.0747126436781609) internal successors, (187), 177 states have internal predecessors, (187), 24 states have call successors, (24), 9 states have call predecessors, (24), 22 states have return successors, (56), 37 states have call predecessors, (56), 23 states have call successors, (56) [2025-02-08 10:00:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 267 transitions. [2025-02-08 10:00:23,558 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 267 transitions. Word has length 88 [2025-02-08 10:00:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:23,558 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 267 transitions. [2025-02-08 10:00:23,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.727272727272727) internal successors, (90), 34 states have internal predecessors, (90), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (19), 18 states have call predecessors, (19), 9 states have call successors, (19) [2025-02-08 10:00:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 267 transitions. [2025-02-08 10:00:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-08 10:00:23,559 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:23,559 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] [2025-02-08 10:00:23,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:23,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:23,764 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:23,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 482712265, now seen corresponding path program 1 times [2025-02-08 10:00:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395518943] [2025-02-08 10:00:23,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:23,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-08 10:00:23,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-08 10:00:23,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:23,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-08 10:00:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395518943] [2025-02-08 10:00:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395518943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:23,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691717487] [2025-02-08 10:00:23,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:23,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:23,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:23,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:23,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 10:00:23,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-08 10:00:23,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-08 10:00:23,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:23,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:23,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 10:00:23,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-08 10:00:24,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-08 10:00:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691717487] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:24,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2025-02-08 10:00:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874701796] [2025-02-08 10:00:24,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:24,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 10:00:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:24,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 10:00:24,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 10:00:24,548 INFO L87 Difference]: Start difference. First operand 224 states and 267 transitions. Second operand has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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) [2025-02-08 10:00:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:24,773 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2025-02-08 10:00:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 10:00:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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 89 [2025-02-08 10:00:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:24,775 INFO L225 Difference]: With dead ends: 271 [2025-02-08 10:00:24,775 INFO L226 Difference]: Without dead ends: 266 [2025-02-08 10:00:24,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 155 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=1406, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 10:00:24,777 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:24,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 543 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 10:00:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-02-08 10:00:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 222. [2025-02-08 10:00:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 172 states have (on average 1.0406976744186047) internal successors, (179), 176 states have internal predecessors, (179), 24 states have call successors, (24), 9 states have call predecessors, (24), 23 states have return successors, (56), 36 states have call predecessors, (56), 23 states have call successors, (56) [2025-02-08 10:00:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 259 transitions. [2025-02-08 10:00:24,790 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 259 transitions. Word has length 89 [2025-02-08 10:00:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:24,791 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 259 transitions. [2025-02-08 10:00:24,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.787878787878788) internal successors, (92), 34 states have internal predecessors, (92), 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) [2025-02-08 10:00:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 259 transitions. [2025-02-08 10:00:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-08 10:00:24,793 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:24,793 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2025-02-08 10:00:24,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:24,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 10:00:24,998 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:24,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -753969125, now seen corresponding path program 1 times [2025-02-08 10:00:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:24,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051527621] [2025-02-08 10:00:24,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:25,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-08 10:00:25,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-08 10:00:25,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:25,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 82 proven. 139 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-02-08 10:00:25,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:25,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051527621] [2025-02-08 10:00:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051527621] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134214200] [2025-02-08 10:00:25,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:25,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:25,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:25,155 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:25,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 10:00:25,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-08 10:00:25,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-08 10:00:25,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:25,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:25,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:25,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 328 proven. 40 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-02-08 10:00:25,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 69 proven. 122 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2025-02-08 10:00:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134214200] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:25,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 17 [2025-02-08 10:00:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722160521] [2025-02-08 10:00:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:25,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:00:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:25,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:00:25,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:00:25,604 INFO L87 Difference]: Start difference. First operand 222 states and 259 transitions. Second operand has 17 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 10 states have call successors, (22), 3 states have call predecessors, (22), 6 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2025-02-08 10:00:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:25,736 INFO L93 Difference]: Finished difference Result 413 states and 484 transitions. [2025-02-08 10:00:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:00:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 10 states have call successors, (22), 3 states have call predecessors, (22), 6 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 177 [2025-02-08 10:00:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:25,738 INFO L225 Difference]: With dead ends: 413 [2025-02-08 10:00:25,738 INFO L226 Difference]: Without dead ends: 219 [2025-02-08 10:00:25,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2025-02-08 10:00:25,739 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:25,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 205 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-02-08 10:00:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 190. [2025-02-08 10:00:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 147 states have (on average 1.0408163265306123) internal successors, (153), 151 states have internal predecessors, (153), 23 states have call successors, (23), 9 states have call predecessors, (23), 18 states have return successors, (41), 29 states have call predecessors, (41), 22 states have call successors, (41) [2025-02-08 10:00:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2025-02-08 10:00:25,748 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 177 [2025-02-08 10:00:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:25,748 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2025-02-08 10:00:25,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.5625) internal successors, (121), 16 states have internal predecessors, (121), 10 states have call successors, (22), 3 states have call predecessors, (22), 6 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2025-02-08 10:00:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2025-02-08 10:00:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-08 10:00:25,750 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:25,750 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-02-08 10:00:25,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 10:00:25,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 10:00:25,951 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:25,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1422027808, now seen corresponding path program 1 times [2025-02-08 10:00:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368063126] [2025-02-08 10:00:25,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:25,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-08 10:00:25,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-08 10:00:25,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:25,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 144 proven. 50 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2025-02-08 10:00:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368063126] [2025-02-08 10:00:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368063126] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722585828] [2025-02-08 10:00:26,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 10:00:26,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:26,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:26,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 10:00:26,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-02-08 10:00:26,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-02-08 10:00:26,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 10:00:26,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:26,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 10:00:26,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 129 proven. 44 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-02-08 10:00:26,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 129 proven. 45 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2025-02-08 10:00:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722585828] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:26,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:26,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 17 [2025-02-08 10:00:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695087776] [2025-02-08 10:00:26,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:26,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 10:00:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:26,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 10:00:26,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-08 10:00:26,780 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand has 17 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-02-08 10:00:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:26,925 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2025-02-08 10:00:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 10:00:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 160 [2025-02-08 10:00:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:26,926 INFO L225 Difference]: With dead ends: 203 [2025-02-08 10:00:26,926 INFO L226 Difference]: Without dead ends: 170 [2025-02-08 10:00:26,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 312 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2025-02-08 10:00:26,927 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:26,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 251 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-02-08 10:00:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2025-02-08 10:00:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 134 states have internal predecessors, (134), 21 states have call successors, (21), 9 states have call predecessors, (21), 15 states have return successors, (30), 24 states have call predecessors, (30), 20 states have call successors, (30) [2025-02-08 10:00:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2025-02-08 10:00:26,936 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 185 transitions. Word has length 160 [2025-02-08 10:00:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:26,937 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 185 transitions. [2025-02-08 10:00:26,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2025-02-08 10:00:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 185 transitions. [2025-02-08 10:00:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-08 10:00:26,938 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:26,938 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] [2025-02-08 10:00:26,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:27,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:27,143 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:27,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -413160883, now seen corresponding path program 2 times [2025-02-08 10:00:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:27,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442002747] [2025-02-08 10:00:27,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:27,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:27,148 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 142 statements into 2 equivalence classes. [2025-02-08 10:00:27,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-02-08 10:00:27,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:27,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-02-08 10:00:27,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442002747] [2025-02-08 10:00:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442002747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775188634] [2025-02-08 10:00:27,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:27,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:27,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:27,461 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:27,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 10:00:27,501 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 142 statements into 2 equivalence classes. [2025-02-08 10:00:27,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-02-08 10:00:27,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:27,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:27,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 10:00:27,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-02-08 10:00:27,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-02-08 10:00:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775188634] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:28,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2025-02-08 10:00:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643624987] [2025-02-08 10:00:28,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:28,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 10:00:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:28,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 10:00:28,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 10:00:28,629 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. Second operand has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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) [2025-02-08 10:00:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:28,797 INFO L93 Difference]: Finished difference Result 201 states and 223 transitions. [2025-02-08 10:00:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 10:00:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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 142 [2025-02-08 10:00:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:28,799 INFO L225 Difference]: With dead ends: 201 [2025-02-08 10:00:28,799 INFO L226 Difference]: Without dead ends: 183 [2025-02-08 10:00:28,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 255 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=313, Invalid=2039, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 10:00:28,801 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:28,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 548 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:28,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-02-08 10:00:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 144. [2025-02-08 10:00:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 115 states have internal predecessors, (115), 19 states have call successors, (19), 9 states have call predecessors, (19), 12 states have return successors, (23), 19 states have call predecessors, (23), 17 states have call successors, (23) [2025-02-08 10:00:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 157 transitions. [2025-02-08 10:00:28,807 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 157 transitions. Word has length 142 [2025-02-08 10:00:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:28,808 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 157 transitions. [2025-02-08 10:00:28,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 45 states have internal predecessors, (119), 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) [2025-02-08 10:00:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2025-02-08 10:00:28,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-08 10:00:28,809 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 10:00:28,809 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-08 10:00:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:29,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:29,010 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-02-08 10:00:29,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 10:00:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1704182081, now seen corresponding path program 2 times [2025-02-08 10:00:29,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 10:00:29,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737046404] [2025-02-08 10:00:29,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:29,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 10:00:29,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 172 statements into 2 equivalence classes. [2025-02-08 10:00:29,021 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 172 of 172 statements. [2025-02-08 10:00:29,021 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:29,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2025-02-08 10:00:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 10:00:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737046404] [2025-02-08 10:00:29,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737046404] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 10:00:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557117735] [2025-02-08 10:00:29,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 10:00:29,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 10:00:29,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:00:29,070 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 10:00:29,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 10:00:29,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 172 statements into 2 equivalence classes. [2025-02-08 10:00:29,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 172 of 172 statements. [2025-02-08 10:00:29,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 10:00:29,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 10:00:29,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 10:00:29,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 10:00:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 123 proven. 19 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2025-02-08 10:00:29,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 10:00:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 123 proven. 19 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2025-02-08 10:00:29,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557117735] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 10:00:29,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 10:00:29,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 20 [2025-02-08 10:00:29,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398924177] [2025-02-08 10:00:29,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 10:00:29,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 10:00:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 10:00:29,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 10:00:29,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2025-02-08 10:00:29,650 INFO L87 Difference]: Start difference. First operand 144 states and 157 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (17), 12 states have call predecessors, (17), 6 states have call successors, (17) [2025-02-08 10:00:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 10:00:29,814 INFO L93 Difference]: Finished difference Result 190 states and 206 transitions. [2025-02-08 10:00:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 10:00:29,815 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (17), 12 states have call predecessors, (17), 6 states have call successors, (17) Word has length 172 [2025-02-08 10:00:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 10:00:29,815 INFO L225 Difference]: With dead ends: 190 [2025-02-08 10:00:29,815 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 10:00:29,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 320 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2025-02-08 10:00:29,816 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 10:00:29,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 237 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 10:00:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 10:00:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 10:00:29,817 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) [2025-02-08 10:00:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 10:00:29,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2025-02-08 10:00:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 10:00:29,817 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 10:00:29,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (17), 12 states have call predecessors, (17), 6 states have call successors, (17) [2025-02-08 10:00:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 10:00:29,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 10:00:29,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-02-08 10:00:29,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-02-08 10:00:29,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-02-08 10:00:29,819 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-02-08 10:00:29,820 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-02-08 10:00:29,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 10:00:30,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 10:00:30,025 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 10:00:30,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-08 10:00:32,044 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 10:00:32,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 10:00:32 BoogieIcfgContainer [2025-02-08 10:00:32,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 10:00:32,049 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 10:00:32,049 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 10:00:32,049 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 10:00:32,049 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:00:10" (3/4) ... [2025-02-08 10:00:32,051 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 10:00:32,055 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-02-08 10:00:32,056 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-02-08 10:00:32,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-08 10:00:32,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 10:00:32,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 10:00:32,058 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 10:00:32,123 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 10:00:32,123 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 10:00:32,123 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 10:00:32,123 INFO L158 Benchmark]: Toolchain (without parser) took 22500.79ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 111.8MB in the beginning and 427.2MB in the end (delta: -315.4MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.89ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 101.2MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.98ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 959.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: Boogie Preprocessor took 22.79ms. Allocated memory is still 142.6MB. Free memory was 100.2MB in the beginning and 99.3MB in the end (delta: 971.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: IcfgBuilder took 208.69ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 86.6MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: TraceAbstraction took 22022.24ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 86.1MB in the beginning and 431.5MB in the end (delta: -345.4MB). Peak memory consumption was 298.5MB. Max. memory is 16.1GB. [2025-02-08 10:00:32,124 INFO L158 Benchmark]: Witness Printer took 74.50ms. Allocated memory is still 536.9MB. Free memory was 431.5MB in the beginning and 427.2MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:00:32,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.89ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 101.2MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.98ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 959.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.79ms. Allocated memory is still 142.6MB. Free memory was 100.2MB in the beginning and 99.3MB in the end (delta: 971.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 208.69ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 86.6MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22022.24ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 86.1MB in the beginning and 431.5MB in the end (delta: -345.4MB). Peak memory consumption was 298.5MB. Max. memory is 16.1GB. * Witness Printer took 74.50ms. Allocated memory is still 536.9MB. Free memory was 431.5MB in the beginning and 427.2MB in the end (delta: 4.3MB). 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, 49 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 20.0s, OverallIterations: 28, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1481 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 7398 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6401 mSDsCounter, 434 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7258 IncrementalHoareTripleChecker+Invalid, 7692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 434 mSolverCounterUnsat, 997 mSDtfsCounter, 7258 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2958 GetRequests, 2370 SyntacticMatches, 87 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4764 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=23, InterpolantAutomatonStates: 366, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 418 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 3080 NumberOfCodeBlocks, 3080 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 4210 ConstructedInterpolants, 0 QuantifiedInterpolants, 8605 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2979 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 59 InterpolantComputations, 15 PerfectInterpolantSequences, 5727/6806 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! [2025-02-08 10:00:32,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE