/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/byte_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:35:02,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:35:02,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:35:02,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:35:02,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:35:02,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:35:02,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:35:02,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:35:02,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:35:02,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:35:02,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:35:02,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:35:02,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:35:02,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:35:02,438 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:35:02,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:35:02,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:35:02,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:35:02,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:35:02,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:35:02,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:35:02,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:35:02,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:35:02,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:35:02,441 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:35:02,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:35:02,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:35:02,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:35:02,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:35:02,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:35:02,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:35:02,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:35:02,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:35:02,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:35:02,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:02,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:35:02,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:35:02,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:35:02,444 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:35:02,444 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:35:02,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:35:02,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:35:02,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:35:02,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:35:02,446 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:35:02,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:35:02,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:35:02,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:35:02,666 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:35:02,667 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:35:02,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add-1.i [2024-11-03 13:35:04,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:35:04,183 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:35:04,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add-1.i [2024-11-03 13:35:04,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354f78fe2/81009b9315cd44e48e63357eb3846399/FLAG5d66650e7 [2024-11-03 13:35:04,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354f78fe2/81009b9315cd44e48e63357eb3846399 [2024-11-03 13:35:04,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:35:04,606 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:35:04,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:04,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:35:04,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:35:04,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ef3517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04, skipping insertion in model container [2024-11-03 13:35:04,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:35:04,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add-1.i[1166,1179] [2024-11-03 13:35:04,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:04,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:35:04,817 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add-1.i[1166,1179] [2024-11-03 13:35:04,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:04,846 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:35:04,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04 WrapperNode [2024-11-03 13:35:04,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:04,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:04,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:35:04,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:35:04,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,880 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2024-11-03 13:35:04,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:04,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:35:04,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:35:04,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:35:04,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,909 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]. [2024-11-03 13:35:04,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:35:04,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:35:04,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:35:04,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:35:04,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (1/1) ... [2024-11-03 13:35:04,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:35:04,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 13:35:04,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 13:35:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:35:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:35:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:35:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:35:05,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:35:05,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:35:05,350 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-03 13:35:05,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:35:05,359 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:35:05,359 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 13:35:05,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:05 BoogieIcfgContainer [2024-11-03 13:35:05,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:35:05,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:35:05,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:35:05,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:35:05,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:35:04" (1/3) ... [2024-11-03 13:35:05,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:05, skipping insertion in model container [2024-11-03 13:35:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:04" (2/3) ... [2024-11-03 13:35:05,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d29ac0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:05, skipping insertion in model container [2024-11-03 13:35:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:05" (3/3) ... [2024-11-03 13:35:05,366 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2024-11-03 13:35:05,378 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:35:05,378 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:35:05,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:35:05,432 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;@4b08add, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:35:05,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:35:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 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) [2024-11-03 13:35:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:05,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:05,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:05,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:05,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2024-11-03 13:35:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:05,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401550665] [2024-11-03 13:35:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:05,454 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:05,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:05,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:05,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:35:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:05,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:35:05,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:05,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:05,550 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:05,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401550665] [2024-11-03 13:35:05,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [401550665] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:05,551 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:05,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:35:05,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037125133] [2024-11-03 13:35:05,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:05,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:35:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:05,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:35:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:35:05,580 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-03 13:35:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:05,595 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-03 13:35:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:35:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12 [2024-11-03 13:35:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:05,603 INFO L225 Difference]: With dead ends: 57 [2024-11-03 13:35:05,603 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 13:35:05,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:35:05,607 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:05,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 13:35:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 13:35:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 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) [2024-11-03 13:35:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-03 13:35:05,630 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-03 13:35:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:05,631 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-03 13:35:05,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-03 13:35:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-03 13:35:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:05,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:05,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:05,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:35:05,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:05,833 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:05,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2024-11-03 13:35:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804366259] [2024-11-03 13:35:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:05,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:05,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:35:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:05,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:05,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:05,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:05,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:05,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804366259] [2024-11-03 13:35:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1804366259] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:05,949 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886346116] [2024-11-03 13:35:05,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:05,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:05,951 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-03 13:35:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:06,216 INFO L93 Difference]: Finished difference Result 141 states and 255 transitions. [2024-11-03 13:35:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 12 [2024-11-03 13:35:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:06,218 INFO L225 Difference]: With dead ends: 141 [2024-11-03 13:35:06,219 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 13:35:06,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:06,220 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 154 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:06,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 150 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:35:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 13:35:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-11-03 13:35:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.67) internal successors, (167), 100 states have internal predecessors, (167), 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) [2024-11-03 13:35:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 167 transitions. [2024-11-03 13:35:06,239 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 167 transitions. Word has length 12 [2024-11-03 13:35:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:06,239 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 167 transitions. [2024-11-03 13:35:06,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2024-11-03 13:35:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 167 transitions. [2024-11-03 13:35:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 13:35:06,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:06,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:06,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:35:06,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:06,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:06,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash 583572890, now seen corresponding path program 1 times [2024-11-03 13:35:06,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:06,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938751365] [2024-11-03 13:35:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:06,443 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:06,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:06,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:06,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:35:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:06,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:06,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:06,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:06,554 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938751365] [2024-11-03 13:35:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [938751365] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:06,555 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 13:35:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355812786] [2024-11-03 13:35:06,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:06,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:06,557 INFO L87 Difference]: Start difference. First operand 101 states and 167 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-11-03 13:35:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:06,974 INFO L93 Difference]: Finished difference Result 274 states and 490 transitions. [2024-11-03 13:35:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) Word has length 14 [2024-11-03 13:35:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:06,976 INFO L225 Difference]: With dead ends: 274 [2024-11-03 13:35:06,976 INFO L226 Difference]: Without dead ends: 229 [2024-11-03 13:35:06,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-03 13:35:06,977 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 793 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:06,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 169 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-03 13:35:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 190. [2024-11-03 13:35:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.656084656084656) internal successors, (313), 189 states have internal predecessors, (313), 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) [2024-11-03 13:35:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 313 transitions. [2024-11-03 13:35:06,992 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 313 transitions. Word has length 14 [2024-11-03 13:35:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:06,992 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 313 transitions. [2024-11-03 13:35:06,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-11-03 13:35:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 313 transitions. [2024-11-03 13:35:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 13:35:06,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:06,994 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 13:35:06,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:35:07,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:07,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:07,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -842586557, now seen corresponding path program 1 times [2024-11-03 13:35:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963510491] [2024-11-03 13:35:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:07,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:07,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:35:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:07,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:07,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:07,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:07,293 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:07,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963510491] [2024-11-03 13:35:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1963510491] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:07,293 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230457470] [2024-11-03 13:35:07,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:07,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:07,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:07,298 INFO L87 Difference]: Start difference. First operand 190 states and 313 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2024-11-03 13:35:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:07,486 INFO L93 Difference]: Finished difference Result 833 states and 1392 transitions. [2024-11-03 13:35:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) Word has length 26 [2024-11-03 13:35:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:07,490 INFO L225 Difference]: With dead ends: 833 [2024-11-03 13:35:07,491 INFO L226 Difference]: Without dead ends: 668 [2024-11-03 13:35:07,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:07,493 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 215 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:07,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 127 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:35:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-03 13:35:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 419. [2024-11-03 13:35:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5406698564593302) internal successors, (644), 418 states have internal predecessors, (644), 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) [2024-11-03 13:35:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2024-11-03 13:35:07,522 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 26 [2024-11-03 13:35:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2024-11-03 13:35:07,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2024-11-03 13:35:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2024-11-03 13:35:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 13:35:07,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:07,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:07,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:35:07,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:07,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1924928046, now seen corresponding path program 1 times [2024-11-03 13:35:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:07,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977038486] [2024-11-03 13:35:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:07,729 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:07,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:07,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:35:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:07,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:35:07,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:07,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:07,851 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977038486] [2024-11-03 13:35:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1977038486] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:07,851 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2024-11-03 13:35:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119217765] [2024-11-03 13:35:07,852 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:07,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:35:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:35:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:35:07,853 INFO L87 Difference]: Start difference. First operand 419 states and 644 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2024-11-03 13:35:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:08,210 INFO L93 Difference]: Finished difference Result 1106 states and 1813 transitions. [2024-11-03 13:35:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:35:08,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) Word has length 28 [2024-11-03 13:35:08,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:08,214 INFO L225 Difference]: With dead ends: 1106 [2024-11-03 13:35:08,214 INFO L226 Difference]: Without dead ends: 941 [2024-11-03 13:35:08,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-03 13:35:08,216 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 738 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:08,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 377 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-03 13:35:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 790. [2024-11-03 13:35:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.5272496831432192) internal successors, (1205), 789 states have internal predecessors, (1205), 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) [2024-11-03 13:35:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1205 transitions. [2024-11-03 13:35:08,270 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1205 transitions. Word has length 28 [2024-11-03 13:35:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:08,270 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1205 transitions. [2024-11-03 13:35:08,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2024-11-03 13:35:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1205 transitions. [2024-11-03 13:35:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:08,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:08,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:08,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:35:08,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:08,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2004053295, now seen corresponding path program 1 times [2024-11-03 13:35:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:08,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796685084] [2024-11-03 13:35:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:08,478 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:08,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:08,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:35:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:08,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:08,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,582 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:08,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796685084] [2024-11-03 13:35:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [796685084] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:08,582 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:08,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613135585] [2024-11-03 13:35:08,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:08,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:08,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:08,583 INFO L87 Difference]: Start difference. First operand 790 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-03 13:35:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:08,686 INFO L93 Difference]: Finished difference Result 1769 states and 2735 transitions. [2024-11-03 13:35:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:35:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) Word has length 31 [2024-11-03 13:35:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:08,689 INFO L225 Difference]: With dead ends: 1769 [2024-11-03 13:35:08,689 INFO L226 Difference]: Without dead ends: 1096 [2024-11-03 13:35:08,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:08,693 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 36 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:08,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 61 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-03 13:35:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 975. [2024-11-03 13:35:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.4948665297741273) internal successors, (1456), 974 states have internal predecessors, (1456), 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) [2024-11-03 13:35:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1456 transitions. [2024-11-03 13:35:08,718 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1456 transitions. Word has length 31 [2024-11-03 13:35:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:08,718 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1456 transitions. [2024-11-03 13:35:08,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-03 13:35:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1456 transitions. [2024-11-03 13:35:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:08,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:08,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:08,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:35:08,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,922 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:08,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2075339537, now seen corresponding path program 1 times [2024-11-03 13:35:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:08,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385659754] [2024-11-03 13:35:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:08,923 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:08,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:08,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:35:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:08,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:08,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,972 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385659754] [2024-11-03 13:35:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [385659754] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:08,972 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976756957] [2024-11-03 13:35:08,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:08,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:08,973 INFO L87 Difference]: Start difference. First operand 975 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-03 13:35:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:08,995 INFO L93 Difference]: Finished difference Result 1298 states and 1938 transitions. [2024-11-03 13:35:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:35:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) Word has length 31 [2024-11-03 13:35:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:09,000 INFO L225 Difference]: With dead ends: 1298 [2024-11-03 13:35:09,000 INFO L226 Difference]: Without dead ends: 1284 [2024-11-03 13:35:09,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:09,001 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:09,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-03 13:35:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1214. [2024-11-03 13:35:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 1.5094806265457543) internal successors, (1831), 1213 states have internal predecessors, (1831), 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) [2024-11-03 13:35:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1831 transitions. [2024-11-03 13:35:09,031 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1831 transitions. Word has length 31 [2024-11-03 13:35:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:09,031 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1831 transitions. [2024-11-03 13:35:09,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-03 13:35:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1831 transitions. [2024-11-03 13:35:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:09,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:09,032 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:09,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:35:09,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:09,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:09,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1961462321, now seen corresponding path program 1 times [2024-11-03 13:35:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958903461] [2024-11-03 13:35:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:09,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:09,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:35:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:09,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:09,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,396 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958903461] [2024-11-03 13:35:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [958903461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:09,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:09,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209101449] [2024-11-03 13:35:09,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:09,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:09,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:09,397 INFO L87 Difference]: Start difference. First operand 1214 states and 1831 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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) [2024-11-03 13:35:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:09,867 INFO L93 Difference]: Finished difference Result 2912 states and 4410 transitions. [2024-11-03 13:35:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 13:35:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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) Word has length 31 [2024-11-03 13:35:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:09,874 INFO L225 Difference]: With dead ends: 2912 [2024-11-03 13:35:09,874 INFO L226 Difference]: Without dead ends: 2149 [2024-11-03 13:35:09,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2024-11-03 13:35:09,876 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 605 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:09,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 175 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2024-11-03 13:35:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1702. [2024-11-03 13:35:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 1.5138154027042916) internal successors, (2575), 1701 states have internal predecessors, (2575), 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) [2024-11-03 13:35:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2575 transitions. [2024-11-03 13:35:09,931 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2575 transitions. Word has length 31 [2024-11-03 13:35:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:09,931 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2575 transitions. [2024-11-03 13:35:09,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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) [2024-11-03 13:35:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2575 transitions. [2024-11-03 13:35:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-03 13:35:09,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:09,933 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:09,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:35:10,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:10,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1135027793, now seen corresponding path program 1 times [2024-11-03 13:35:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126385751] [2024-11-03 13:35:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:10,135 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:10,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:10,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:35:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:10,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:10,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:10,295 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126385751] [2024-11-03 13:35:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1126385751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:10,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:10,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340894162] [2024-11-03 13:35:10,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:10,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:10,297 INFO L87 Difference]: Start difference. First operand 1702 states and 2575 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-03 13:35:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:10,715 INFO L93 Difference]: Finished difference Result 3466 states and 5227 transitions. [2024-11-03 13:35:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 13:35:10,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) Word has length 32 [2024-11-03 13:35:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:10,721 INFO L225 Difference]: With dead ends: 3466 [2024-11-03 13:35:10,721 INFO L226 Difference]: Without dead ends: 2126 [2024-11-03 13:35:10,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:35:10,723 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 404 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:10,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 274 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-03 13:35:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1799. [2024-11-03 13:35:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 1.4788654060066742) internal successors, (2659), 1798 states have internal predecessors, (2659), 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) [2024-11-03 13:35:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2659 transitions. [2024-11-03 13:35:10,767 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2659 transitions. Word has length 32 [2024-11-03 13:35:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:10,767 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2659 transitions. [2024-11-03 13:35:10,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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) [2024-11-03 13:35:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2659 transitions. [2024-11-03 13:35:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 13:35:10,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:10,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:10,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:35:10,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,969 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:10,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2055171256, now seen corresponding path program 1 times [2024-11-03 13:35:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450818838] [2024-11-03 13:35:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:10,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,971 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:10,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:35:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:10,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:10,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,048 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450818838] [2024-11-03 13:35:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1450818838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:11,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:11,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:35:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219149665] [2024-11-03 13:35:11,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:11,049 INFO L87 Difference]: Start difference. First operand 1799 states and 2659 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-03 13:35:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:11,267 INFO L93 Difference]: Finished difference Result 4035 states and 6139 transitions. [2024-11-03 13:35:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:35:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) Word has length 33 [2024-11-03 13:35:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:11,298 INFO L225 Difference]: With dead ends: 4035 [2024-11-03 13:35:11,298 INFO L226 Difference]: Without dead ends: 2897 [2024-11-03 13:35:11,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:11,300 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:11,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 101 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:35:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2024-11-03 13:35:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2399. [2024-11-03 13:35:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2398 states have (on average 1.4795663052543786) internal successors, (3548), 2398 states have internal predecessors, (3548), 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) [2024-11-03 13:35:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3548 transitions. [2024-11-03 13:35:11,359 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3548 transitions. Word has length 33 [2024-11-03 13:35:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:11,360 INFO L471 AbstractCegarLoop]: Abstraction has 2399 states and 3548 transitions. [2024-11-03 13:35:11,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-03 13:35:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3548 transitions. [2024-11-03 13:35:11,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:35:11,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:11,361 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:11,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 13:35:11,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,562 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:11,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash 945650591, now seen corresponding path program 1 times [2024-11-03 13:35:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:11,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505574523] [2024-11-03 13:35:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:11,563 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:11,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:35:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:11,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-03 13:35:11,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-03 13:35:13,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-03 13:35:14,552 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505574523] [2024-11-03 13:35:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1505574523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:14,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:14,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2024-11-03 13:35:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31201870] [2024-11-03 13:35:14,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:14,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-03 13:35:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-03 13:35:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2024-11-03 13:35:14,554 INFO L87 Difference]: Start difference. First operand 2399 states and 3548 transitions. Second operand has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 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) [2024-11-03 13:35:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:21,888 INFO L93 Difference]: Finished difference Result 4245 states and 6190 transitions. [2024-11-03 13:35:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-03 13:35:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 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) Word has length 51 [2024-11-03 13:35:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:21,900 INFO L225 Difference]: With dead ends: 4245 [2024-11-03 13:35:21,900 INFO L226 Difference]: Without dead ends: 3933 [2024-11-03 13:35:21,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1971, Invalid=6039, Unknown=0, NotChecked=0, Total=8010 [2024-11-03 13:35:21,904 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 1786 mSDsluCounter, 5662 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:21,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 6044 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-03 13:35:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2024-11-03 13:35:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2958. [2024-11-03 13:35:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 1.471085559688874) internal successors, (4350), 2957 states have internal predecessors, (4350), 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) [2024-11-03 13:35:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 4350 transitions. [2024-11-03 13:35:22,031 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 4350 transitions. Word has length 51 [2024-11-03 13:35:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:22,031 INFO L471 AbstractCegarLoop]: Abstraction has 2958 states and 4350 transitions. [2024-11-03 13:35:22,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 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) [2024-11-03 13:35:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 4350 transitions. [2024-11-03 13:35:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:35:22,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:22,035 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:22,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:35:22,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:22,236 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:22,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash -65466659, now seen corresponding path program 1 times [2024-11-03 13:35:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:22,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824046956] [2024-11-03 13:35:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:22,238 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:22,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:35:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:22,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:35:22,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:22,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:22,369 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824046956] [2024-11-03 13:35:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [824046956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:22,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:22,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-11-03 13:35:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385373187] [2024-11-03 13:35:22,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:22,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:35:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:35:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:35:22,371 INFO L87 Difference]: Start difference. First operand 2958 states and 4350 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-03 13:35:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:22,612 INFO L93 Difference]: Finished difference Result 5938 states and 8720 transitions. [2024-11-03 13:35:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:35:22,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) Word has length 51 [2024-11-03 13:35:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:22,621 INFO L225 Difference]: With dead ends: 5938 [2024-11-03 13:35:22,621 INFO L226 Difference]: Without dead ends: 3016 [2024-11-03 13:35:22,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:35:22,625 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:22,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 95 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2024-11-03 13:35:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2578. [2024-11-03 13:35:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2577 states have (on average 1.4020178502134264) internal successors, (3613), 2577 states have internal predecessors, (3613), 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) [2024-11-03 13:35:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3613 transitions. [2024-11-03 13:35:22,728 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3613 transitions. Word has length 51 [2024-11-03 13:35:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:22,728 INFO L471 AbstractCegarLoop]: Abstraction has 2578 states and 3613 transitions. [2024-11-03 13:35:22,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-03 13:35:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3613 transitions. [2024-11-03 13:35:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 13:35:22,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:22,730 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:22,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-03 13:35:22,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:22,935 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1950719985, now seen corresponding path program 1 times [2024-11-03 13:35:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146560396] [2024-11-03 13:35:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:22,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:22,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:35:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:35:22,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 13:35:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:35:23,023 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 13:35:23,023 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 13:35:23,024 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:35:23,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:23,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:23,229 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:23,266 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:35:23,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:35:23 BoogieIcfgContainer [2024-11-03 13:35:23,268 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:35:23,269 INFO L158 Benchmark]: Toolchain (without parser) took 18662.25ms. Allocated memory was 211.8MB in the beginning and 503.3MB in the end (delta: 291.5MB). Free memory was 155.5MB in the beginning and 312.8MB in the end (delta: -157.3MB). Peak memory consumption was 134.5MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,269 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 211.8MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:35:23,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.90ms. Allocated memory is still 211.8MB. Free memory was 155.2MB in the beginning and 140.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.05ms. Allocated memory is still 211.8MB. Free memory was 140.4MB in the beginning and 138.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,269 INFO L158 Benchmark]: Boogie Preprocessor took 39.67ms. Allocated memory is still 211.8MB. Free memory was 138.4MB in the beginning and 136.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,269 INFO L158 Benchmark]: RCFGBuilder took 438.21ms. Allocated memory was 211.8MB in the beginning and 349.2MB in the end (delta: 137.4MB). Free memory was 136.0MB in the beginning and 310.7MB in the end (delta: -174.7MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,270 INFO L158 Benchmark]: TraceAbstraction took 17906.98ms. Allocated memory was 349.2MB in the beginning and 503.3MB in the end (delta: 154.1MB). Free memory was 310.2MB in the beginning and 312.8MB in the end (delta: -2.6MB). Peak memory consumption was 151.5MB. Max. memory is 8.0GB. [2024-11-03 13:35:23,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 211.8MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.90ms. Allocated memory is still 211.8MB. Free memory was 155.2MB in the beginning and 140.4MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.05ms. Allocated memory is still 211.8MB. Free memory was 140.4MB in the beginning and 138.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.67ms. Allocated memory is still 211.8MB. Free memory was 138.4MB in the beginning and 136.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 438.21ms. Allocated memory was 211.8MB in the beginning and 349.2MB in the end (delta: 137.4MB). Free memory was 136.0MB in the beginning and 310.7MB in the end (delta: -174.7MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. * TraceAbstraction took 17906.98ms. Allocated memory was 349.2MB in the beginning and 503.3MB in the end (delta: 154.1MB). Free memory was 310.2MB in the beginning and 312.8MB in the end (delta: -2.6MB). Peak memory consumption was 151.5MB. Max. memory is 8.0GB. * 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 - CounterExampleResult [Line: 25]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L124] unsigned int a, b, r; [L126] a = __VERIFIER_nondet_uint() [L127] b = __VERIFIER_nondet_uint() [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=1] [L68] nb = (unsigned char)4 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=1, nb=4] [L69] COND TRUE b3 == (unsigned char)0 [L70] nb = nb - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=1, nb=3] [L71] COND TRUE b2 == (unsigned char)0 [L72] nb = nb - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=1, nb=2] [L73] COND TRUE b1 == (unsigned char)0 [L74] nb = nb - 1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, na=1, nb=1] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L83] COND TRUE i < na VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L85] COND FALSE !(i == (unsigned char)1) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L86] COND FALSE !(i == (unsigned char)2) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L87] COND FALSE !(i == (unsigned char)3) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L89] COND TRUE i < nb VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=0] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L91] COND FALSE !(i == (unsigned char)1) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=0, na=1, nb=1, partial_sum=255] [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L100] COND FALSE !(i == (unsigned char)1) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L104] i = i + (unsigned char)1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=1, i=1, na=1, nb=1, partial_sum=255, r0=-1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L83] COND FALSE !(i < na) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L89] COND FALSE !(i < nb) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L95] COND FALSE !(partial_sum > ((unsigned char)254)) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L99] COND FALSE !(i == (unsigned char)0) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L101] COND FALSE !(i == (unsigned char)2) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L102] COND FALSE !(i == (unsigned char)3) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L104] i = i + (unsigned char)1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1] [L107] COND TRUE i < (unsigned char)4 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1] [L108] COND FALSE !(i == (unsigned char)0) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1] [L109] COND FALSE !(i == (unsigned char)1) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1] [L110] COND TRUE i == (unsigned char)2 [L110] r2 = (unsigned char)0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1, r2=0] [L111] COND FALSE !(i == (unsigned char)3) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=2, partial_sum=1, r0=-1, r1=1, r2=0] [L113] i = i + (unsigned char)1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0] [L107] COND TRUE i < (unsigned char)4 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0] [L108] COND FALSE !(i == (unsigned char)0) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0] [L109] COND FALSE !(i == (unsigned char)1) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0] [L110] COND FALSE !(i == (unsigned char)2) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0] [L111] COND TRUE i == (unsigned char)3 [L111] r3 = (unsigned char)0 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=3, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L113] i = i + (unsigned char)1 VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, i=4, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L107] COND FALSE !(i < (unsigned char)4) VAL [a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\result=511, a0=0, a1=0, a2=0, a3=0, b0=-1, b1=0, b2=0, b3=0, partial_sum=1] [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4888 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4888 mSDsluCounter, 7763 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6834 mSDsCounter, 499 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5521 IncrementalHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 499 mSolverCounterUnsat, 929 mSDtfsCounter, 5521 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 760 GetRequests, 588 SyntacticMatches, 3 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2958occurred in iteration=11, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 3327 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 5844 SizeOfPredicates, 9 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 65/102 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-03 13:35:23,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...