/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_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:35:07,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:35:07,594 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 13:35:07,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:35:07,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:35:07,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:35:07,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:35:07,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:35:07,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:35:07,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:35:07,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:35:07,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:35:07,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:35:07,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:35:07,627 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:35:07,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:35:07,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:35:07,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:35:07,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:35:07,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:35:07,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:35:07,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:35:07,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:35:07,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:35:07,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:35:07,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:35:07,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:35:07,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:35:07,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:35:07,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:07,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:35:07,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:35:07,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:35:07,636 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:35:07,637 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:35:07,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:35:07,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:35:07,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:35:07,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:35:07,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:35:07,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:35:07,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:35:07,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:35:07,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:35:07,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:35:07,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2024-11-03 13:35:09,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:35:09,486 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:35:09,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2024-11-03 13:35:09,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47a365a5/576f3fedf4844c919baffffa0f5b0ab9/FLAG316c24a7b [2024-11-03 13:35:09,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47a365a5/576f3fedf4844c919baffffa0f5b0ab9 [2024-11-03 13:35:09,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:35:09,518 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:35:09,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:09,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:35:09,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:35:09,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3e1914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09, skipping insertion in model container [2024-11-03 13:35:09,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:35:09,734 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_2-2.i[1168,1181] [2024-11-03 13:35:09,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:09,788 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:35:09,799 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_2-2.i[1168,1181] [2024-11-03 13:35:09,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:09,844 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:35:09,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09 WrapperNode [2024-11-03 13:35:09,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:09,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:09,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:35:09,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:35:09,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,878 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2024-11-03 13:35:09,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:09,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:35:09,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:35:09,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:35:09,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,903 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 13:35:09,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:35:09,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:35:09,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:35:09,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:35:09,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (1/1) ... [2024-11-03 13:35:09,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:35:09,973 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 13:35:09,978 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 13:35:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:35:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:35:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:35:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:35:10,089 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:35:10,091 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:35:10,414 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-03 13:35:10,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:35:10,428 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:35:10,428 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 13:35:10,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:10 BoogieIcfgContainer [2024-11-03 13:35:10,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:35:10,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:35:10,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:35:10,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:35:10,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:35:09" (1/3) ... [2024-11-03 13:35:10,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e34333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:10, skipping insertion in model container [2024-11-03 13:35:10,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:09" (2/3) ... [2024-11-03 13:35:10,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e34333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:10, skipping insertion in model container [2024-11-03 13:35:10,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:10" (3/3) ... [2024-11-03 13:35:10,440 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2024-11-03 13:35:10,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:35:10,461 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:35:10,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:35:10,517 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;@4b2c3421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:35:10,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:35:10,522 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 13:35:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:10,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:10,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:10,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:10,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2024-11-03 13:35:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:10,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786961907] [2024-11-03 13:35:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:10,544 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:10,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,546 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 13:35:10,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:35:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:10,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:35:10,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:10,641 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 13:35:10,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:10,645 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 13:35:10,646 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:10,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786961907] [2024-11-03 13:35:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1786961907] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:10,647 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:35:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888165003] [2024-11-03 13:35:10,649 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:10,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:35:10,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:35:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:35:10,676 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 13:35:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:10,692 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-03 13:35:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:35:10,693 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 13:35:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:10,700 INFO L225 Difference]: With dead ends: 57 [2024-11-03 13:35:10,700 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 13:35:10,702 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 13:35:10,705 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 13:35:10,706 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 13:35:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 13:35:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 13:35:10,731 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 13:35:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-03 13:35:10,734 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-03 13:35:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:10,734 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-03 13:35:10,734 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 13:35:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-03 13:35:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:10,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:10,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:10,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:35:10,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:10,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2024-11-03 13:35:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982494544] [2024-11-03 13:35:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:10,938 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,940 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 13:35:10,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:35:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:10,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:10,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,063 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 13:35:11,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,098 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 13:35:11,098 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982494544] [2024-11-03 13:35:11,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [982494544] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:11,099 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:11,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079954334] [2024-11-03 13:35:11,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:11,104 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 13:35:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:11,472 INFO L93 Difference]: Finished difference Result 141 states and 255 transitions. [2024-11-03 13:35:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:11,474 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 13:35:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:11,476 INFO L225 Difference]: With dead ends: 141 [2024-11-03 13:35:11,476 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 13:35:11,477 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 13:35:11,478 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:11,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 150 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 13:35:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-11-03 13:35:11,499 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 13:35:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 167 transitions. [2024-11-03 13:35:11,501 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 167 transitions. Word has length 12 [2024-11-03 13:35:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:11,502 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 167 transitions. [2024-11-03 13:35:11,502 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 13:35:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 167 transitions. [2024-11-03 13:35:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 13:35:11,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:11,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:11,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:35:11,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:11,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 583572890, now seen corresponding path program 1 times [2024-11-03 13:35:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193344996] [2024-11-03 13:35:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:11,708 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:11,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,710 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 13:35:11,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:35:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:11,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:11,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,787 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 13:35:11,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,848 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 13:35:11,848 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193344996] [2024-11-03 13:35:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193344996] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:11,849 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:11,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 13:35:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060440414] [2024-11-03 13:35:11,849 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:11,851 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 13:35:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:12,432 INFO L93 Difference]: Finished difference Result 274 states and 490 transitions. [2024-11-03 13:35:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:12,433 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 13:35:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:12,435 INFO L225 Difference]: With dead ends: 274 [2024-11-03 13:35:12,435 INFO L226 Difference]: Without dead ends: 229 [2024-11-03 13:35:12,436 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 13:35:12,440 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 793 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:12,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 169 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:35:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-03 13:35:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 190. [2024-11-03 13:35:12,473 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 13:35:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 313 transitions. [2024-11-03 13:35:12,476 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 313 transitions. Word has length 14 [2024-11-03 13:35:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:12,479 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 313 transitions. [2024-11-03 13:35:12,479 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 13:35:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 313 transitions. [2024-11-03 13:35:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 13:35:12,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:12,481 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 13:35:12,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:35:12,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:12,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:12,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -842586557, now seen corresponding path program 1 times [2024-11-03 13:35:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566447342] [2024-11-03 13:35:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:12,684 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:12,686 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 13:35:12,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:35:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:12,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:12,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:12,784 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 13:35:12,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:12,810 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 13:35:12,810 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566447342] [2024-11-03 13:35:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1566447342] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:12,811 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982563401] [2024-11-03 13:35:12,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:12,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:12,815 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 13:35:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:13,024 INFO L93 Difference]: Finished difference Result 833 states and 1392 transitions. [2024-11-03 13:35:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:13,024 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 13:35:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:13,027 INFO L225 Difference]: With dead ends: 833 [2024-11-03 13:35:13,027 INFO L226 Difference]: Without dead ends: 668 [2024-11-03 13:35:13,028 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 13:35:13,029 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 13:35:13,030 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 13:35:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-03 13:35:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 419. [2024-11-03 13:35:13,063 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 13:35:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2024-11-03 13:35:13,069 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 26 [2024-11-03 13:35:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:13,069 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2024-11-03 13:35:13,069 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 13:35:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2024-11-03 13:35:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 13:35:13,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:13,074 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 13:35:13,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:35:13,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:13,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:13,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1924928046, now seen corresponding path program 1 times [2024-11-03 13:35:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134774713] [2024-11-03 13:35:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:13,278 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 13:35:13,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:35:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:13,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:35:13,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:13,362 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 13:35:13,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:13,427 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 13:35:13,427 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134774713] [2024-11-03 13:35:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [134774713] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:13,427 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2024-11-03 13:35:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62269927] [2024-11-03 13:35:13,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:35:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:35:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:35:13,429 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 13:35:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:13,916 INFO L93 Difference]: Finished difference Result 1106 states and 1813 transitions. [2024-11-03 13:35:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:35:13,916 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 13:35:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:13,920 INFO L225 Difference]: With dead ends: 1106 [2024-11-03 13:35:13,921 INFO L226 Difference]: Without dead ends: 941 [2024-11-03 13:35:13,922 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 13:35:13,923 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:13,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 377 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:35:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-03 13:35:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 790. [2024-11-03 13:35:13,954 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 13:35:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1205 transitions. [2024-11-03 13:35:13,958 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1205 transitions. Word has length 28 [2024-11-03 13:35:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:13,958 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1205 transitions. [2024-11-03 13:35:13,958 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 13:35:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1205 transitions. [2024-11-03 13:35:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:13,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:13,964 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 13:35:13,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:14,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,166 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2004053295, now seen corresponding path program 1 times [2024-11-03 13:35:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031564935] [2024-11-03 13:35:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,169 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 13:35:14,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:35:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:14,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:14,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:14,227 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 13:35:14,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:14,254 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 13:35:14,254 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031564935] [2024-11-03 13:35:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031564935] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:14,255 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911645870] [2024-11-03 13:35:14,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:14,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:14,256 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 13:35:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:14,392 INFO L93 Difference]: Finished difference Result 1769 states and 2735 transitions. [2024-11-03 13:35:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:35:14,393 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 13:35:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:14,397 INFO L225 Difference]: With dead ends: 1769 [2024-11-03 13:35:14,398 INFO L226 Difference]: Without dead ends: 1096 [2024-11-03 13:35:14,399 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 13:35:14,400 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 13:35:14,400 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 13:35:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-03 13:35:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 975. [2024-11-03 13:35:14,430 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 13:35:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1456 transitions. [2024-11-03 13:35:14,434 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1456 transitions. Word has length 31 [2024-11-03 13:35:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:14,434 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1456 transitions. [2024-11-03 13:35:14,434 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 13:35:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1456 transitions. [2024-11-03 13:35:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:14,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:14,436 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 13:35:14,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:35:14,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,637 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2075339537, now seen corresponding path program 1 times [2024-11-03 13:35:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979353715] [2024-11-03 13:35:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,638 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,639 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 13:35:14,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:35:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:14,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:14,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:14,687 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 13:35:14,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:14,702 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 13:35:14,703 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:14,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979353715] [2024-11-03 13:35:14,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [979353715] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:14,703 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:14,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:14,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746904302] [2024-11-03 13:35:14,704 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:14,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:14,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:14,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:14,705 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 13:35:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:14,737 INFO L93 Difference]: Finished difference Result 1298 states and 1938 transitions. [2024-11-03 13:35:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:35:14,738 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 13:35:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:14,743 INFO L225 Difference]: With dead ends: 1298 [2024-11-03 13:35:14,743 INFO L226 Difference]: Without dead ends: 1284 [2024-11-03 13:35:14,743 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 13:35:14,744 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 13:35:14,744 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 13:35:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-03 13:35:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1214. [2024-11-03 13:35:14,780 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 13:35:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1831 transitions. [2024-11-03 13:35:14,784 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1831 transitions. Word has length 31 [2024-11-03 13:35:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:14,784 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1831 transitions. [2024-11-03 13:35:14,784 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 13:35:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1831 transitions. [2024-11-03 13:35:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:14,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:14,786 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 13:35:14,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:35:14,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,987 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1961462321, now seen corresponding path program 1 times [2024-11-03 13:35:14,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641264877] [2024-11-03 13:35:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,988 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,990 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 13:35:14,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:35:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:15,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:15,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:15,121 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 13:35:15,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:15,192 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 13:35:15,192 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641264877] [2024-11-03 13:35:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641264877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:15,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459744287] [2024-11-03 13:35:15,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:15,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:15,194 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 13:35:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:15,790 INFO L93 Difference]: Finished difference Result 2912 states and 4410 transitions. [2024-11-03 13:35:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 13:35:15,791 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 13:35:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:15,798 INFO L225 Difference]: With dead ends: 2912 [2024-11-03 13:35:15,799 INFO L226 Difference]: Without dead ends: 2149 [2024-11-03 13:35:15,800 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 13:35:15,801 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 605 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:15,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 175 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:35:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2024-11-03 13:35:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1702. [2024-11-03 13:35:15,850 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 13:35:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2575 transitions. [2024-11-03 13:35:15,856 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2575 transitions. Word has length 31 [2024-11-03 13:35:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:15,856 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2575 transitions. [2024-11-03 13:35:15,856 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 13:35:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2575 transitions. [2024-11-03 13:35:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-03 13:35:15,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:15,858 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 13:35:15,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:35:16,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:16,060 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:16,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:16,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1135027793, now seen corresponding path program 1 times [2024-11-03 13:35:16,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:16,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885201875] [2024-11-03 13:35:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:16,061 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:16,063 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 13:35:16,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:35:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:16,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:16,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:16,201 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 13:35:16,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:16,273 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 13:35:16,273 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885201875] [2024-11-03 13:35:16,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1885201875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:16,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:16,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932686739] [2024-11-03 13:35:16,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:16,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:16,276 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 13:35:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:16,822 INFO L93 Difference]: Finished difference Result 3466 states and 5227 transitions. [2024-11-03 13:35:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 13:35:16,822 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 13:35:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:16,830 INFO L225 Difference]: With dead ends: 3466 [2024-11-03 13:35:16,831 INFO L226 Difference]: Without dead ends: 2126 [2024-11-03 13:35:16,833 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 13:35:16,834 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:16,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 274 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:35:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-03 13:35:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1799. [2024-11-03 13:35:16,917 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 13:35:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2659 transitions. [2024-11-03 13:35:16,924 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2659 transitions. Word has length 32 [2024-11-03 13:35:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:16,924 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2659 transitions. [2024-11-03 13:35:16,924 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 13:35:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2659 transitions. [2024-11-03 13:35:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 13:35:16,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:16,926 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 13:35:16,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:17,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:17,128 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:17,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2055171256, now seen corresponding path program 1 times [2024-11-03 13:35:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884666514] [2024-11-03 13:35:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:17,129 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:17,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:17,131 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 13:35:17,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:35:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:17,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:17,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:17,194 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 13:35:17,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:17,235 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 13:35:17,235 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:17,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884666514] [2024-11-03 13:35:17,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [884666514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:17,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:17,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:35:17,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92542229] [2024-11-03 13:35:17,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:17,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:17,237 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 13:35:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:17,522 INFO L93 Difference]: Finished difference Result 4035 states and 6139 transitions. [2024-11-03 13:35:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:35:17,523 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 13:35:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:17,533 INFO L225 Difference]: With dead ends: 4035 [2024-11-03 13:35:17,533 INFO L226 Difference]: Without dead ends: 2897 [2024-11-03 13:35:17,536 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 13:35:17,537 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 13:35:17,537 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 13:35:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2024-11-03 13:35:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2399. [2024-11-03 13:35:17,628 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 13:35:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3548 transitions. [2024-11-03 13:35:17,636 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3548 transitions. Word has length 33 [2024-11-03 13:35:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:17,637 INFO L471 AbstractCegarLoop]: Abstraction has 2399 states and 3548 transitions. [2024-11-03 13:35:17,637 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 13:35:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3548 transitions. [2024-11-03 13:35:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:35:17,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:17,639 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 13:35:17,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 13:35:17,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:17,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:17,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 945650591, now seen corresponding path program 1 times [2024-11-03 13:35:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041215875] [2024-11-03 13:35:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:17,842 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:17,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:17,844 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 13:35:17,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:35:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:17,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:17,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 13:35:17,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 13:35:17,924 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041215875] [2024-11-03 13:35:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041215875] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:17,924 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334630323] [2024-11-03 13:35:17,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:17,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:17,925 INFO L87 Difference]: Start difference. First operand 2399 states and 3548 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 13:35:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:17,948 INFO L93 Difference]: Finished difference Result 2427 states and 3583 transitions. [2024-11-03 13:35:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:35:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 13:35:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:17,951 INFO L225 Difference]: With dead ends: 2427 [2024-11-03 13:35:17,952 INFO L226 Difference]: Without dead ends: 427 [2024-11-03 13:35:17,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 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 13:35:17,956 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 50 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:17,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 63 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-03 13:35:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2024-11-03 13:35:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4248826291079812) internal successors, (607), 426 states have internal predecessors, (607), 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 13:35:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 607 transitions. [2024-11-03 13:35:17,972 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 607 transitions. Word has length 51 [2024-11-03 13:35:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:17,972 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 607 transitions. [2024-11-03 13:35:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 13:35:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 607 transitions. [2024-11-03 13:35:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:17,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:17,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:35:17,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:18,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:18,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:18,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1373021230, now seen corresponding path program 1 times [2024-11-03 13:35:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:18,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717575833] [2024-11-03 13:35:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:18,178 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:18,179 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 13:35:18,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:35:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:18,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:35:18,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 13:35:18,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 13:35:18,453 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:18,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717575833] [2024-11-03 13:35:18,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [717575833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:18,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:18,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776459643] [2024-11-03 13:35:18,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:18,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:18,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:18,455 INFO L87 Difference]: Start difference. First operand 427 states and 607 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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 13:35:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:18,795 INFO L93 Difference]: Finished difference Result 1320 states and 1841 transitions. [2024-11-03 13:35:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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 70 [2024-11-03 13:35:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:18,799 INFO L225 Difference]: With dead ends: 1320 [2024-11-03 13:35:18,799 INFO L226 Difference]: Without dead ends: 921 [2024-11-03 13:35:18,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-03 13:35:18,801 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:18,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 383 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:35:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-03 13:35:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 591. [2024-11-03 13:35:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.4322033898305084) internal successors, (845), 590 states have internal predecessors, (845), 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 13:35:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 845 transitions. [2024-11-03 13:35:18,825 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 845 transitions. Word has length 70 [2024-11-03 13:35:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:18,826 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 845 transitions. [2024-11-03 13:35:18,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 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 13:35:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 845 transitions. [2024-11-03 13:35:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:18,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:18,827 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-03 13:35:18,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-03 13:35:19,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:19,029 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:19,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 343661932, now seen corresponding path program 2 times [2024-11-03 13:35:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348609429] [2024-11-03 13:35:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:19,030 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:19,032 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 13:35:19,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:35:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:19,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:35:19,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:35:19,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:35:19,275 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348609429] [2024-11-03 13:35:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348609429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:19,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:19,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2024-11-03 13:35:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322612956] [2024-11-03 13:35:19,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:19,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:35:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:35:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:35:19,276 INFO L87 Difference]: Start difference. First operand 591 states and 845 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 13:35:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:19,544 INFO L93 Difference]: Finished difference Result 1433 states and 1962 transitions. [2024-11-03 13:35:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 70 [2024-11-03 13:35:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:19,548 INFO L225 Difference]: With dead ends: 1433 [2024-11-03 13:35:19,548 INFO L226 Difference]: Without dead ends: 870 [2024-11-03 13:35:19,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-03 13:35:19,550 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 188 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:19,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 378 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-03 13:35:19,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 528. [2024-11-03 13:35:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3700189753320684) internal successors, (722), 527 states have internal predecessors, (722), 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 13:35:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 722 transitions. [2024-11-03 13:35:19,577 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 722 transitions. Word has length 70 [2024-11-03 13:35:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:19,577 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 722 transitions. [2024-11-03 13:35:19,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 13:35:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 722 transitions. [2024-11-03 13:35:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:19,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:19,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:35:19,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 13:35:19,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:19,781 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:19,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash 484210542, now seen corresponding path program 3 times [2024-11-03 13:35:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:19,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80490812] [2024-11-03 13:35:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:19,782 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:19,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:19,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:19,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 13:35:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:19,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-03 13:35:19,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:22,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:24,612 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:24,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80490812] [2024-11-03 13:35:24,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [80490812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:24,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:24,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2024-11-03 13:35:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98711508] [2024-11-03 13:35:24,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:24,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 13:35:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 13:35:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 13:35:24,615 INFO L87 Difference]: Start difference. First operand 528 states and 722 transitions. Second operand has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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 13:35:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:35,962 INFO L93 Difference]: Finished difference Result 1433 states and 1919 transitions. [2024-11-03 13:35:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-03 13:35:35,963 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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 70 [2024-11-03 13:35:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:35,966 INFO L225 Difference]: With dead ends: 1433 [2024-11-03 13:35:35,966 INFO L226 Difference]: Without dead ends: 1330 [2024-11-03 13:35:35,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3259 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2416, Invalid=13334, Unknown=0, NotChecked=0, Total=15750 [2024-11-03 13:35:35,970 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 1484 mSDsluCounter, 7154 mSDsCounter, 0 mSdLazyCounter, 4593 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 7499 SdHoareTripleChecker+Invalid, 4674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 4593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:35,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 7499 Invalid, 4674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 4593 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-03 13:35:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-03 13:35:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 874. [2024-11-03 13:35:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.3825887743413516) internal successors, (1207), 873 states have internal predecessors, (1207), 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 13:35:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1207 transitions. [2024-11-03 13:35:36,027 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1207 transitions. Word has length 70 [2024-11-03 13:35:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:36,028 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1207 transitions. [2024-11-03 13:35:36,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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 13:35:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1207 transitions. [2024-11-03 13:35:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:36,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:36,029 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:35:36,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 13:35:36,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:36,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:36,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash 703065260, now seen corresponding path program 1 times [2024-11-03 13:35:36,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:36,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440067120] [2024-11-03 13:35:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:36,232 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:36,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:36,234 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:36,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 13:35:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:36,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:35:36,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:36,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:36,374 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440067120] [2024-11-03 13:35:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [440067120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:36,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-11-03 13:35:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501290101] [2024-11-03 13:35:36,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:36,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:35:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:35:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:35:36,376 INFO L87 Difference]: Start difference. First operand 874 states and 1207 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 13:35:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:36,532 INFO L93 Difference]: Finished difference Result 1776 states and 2457 transitions. [2024-11-03 13:35:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:35:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 70 [2024-11-03 13:35:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:36,535 INFO L225 Difference]: With dead ends: 1776 [2024-11-03 13:35:36,535 INFO L226 Difference]: Without dead ends: 919 [2024-11-03 13:35:36,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 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 13:35:36,536 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:36,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-03 13:35:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 749. [2024-11-03 13:35:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.3489304812834224) internal successors, (1009), 748 states have internal predecessors, (1009), 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 13:35:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1009 transitions. [2024-11-03 13:35:36,585 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1009 transitions. Word has length 70 [2024-11-03 13:35:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:36,585 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1009 transitions. [2024-11-03 13:35:36,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 13:35:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1009 transitions. [2024-11-03 13:35:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 13:35:36,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:36,587 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 13:35:36,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-03 13:35:36,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:36,787 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:36,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1135042114, now seen corresponding path program 1 times [2024-11-03 13:35:36,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:36,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62803484] [2024-11-03 13:35:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:36,790 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:36,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 13:35:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:36,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 13:35:36,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:39,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:41,386 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:41,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62803484] [2024-11-03 13:35:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [62803484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:41,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2024-11-03 13:35:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013501123] [2024-11-03 13:35:41,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:41,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-03 13:35:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-03 13:35:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:35:41,387 INFO L87 Difference]: Start difference. First operand 749 states and 1009 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 13:36:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:08,340 INFO L93 Difference]: Finished difference Result 2288 states and 2901 transitions. [2024-11-03 13:36:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2024-11-03 13:36:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 74 [2024-11-03 13:36:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:08,346 INFO L225 Difference]: With dead ends: 2288 [2024-11-03 13:36:08,347 INFO L226 Difference]: Without dead ends: 2151 [2024-11-03 13:36:08,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11452 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=4973, Invalid=35227, Unknown=0, NotChecked=0, Total=40200 [2024-11-03 13:36:08,354 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 2067 mSDsluCounter, 9971 mSDsCounter, 0 mSdLazyCounter, 6000 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 10403 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 6000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:08,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 10403 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 6000 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-03 13:36:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2024-11-03 13:36:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1373. [2024-11-03 13:36:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 1.3301749271137027) internal successors, (1825), 1372 states have internal predecessors, (1825), 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 13:36:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1825 transitions. [2024-11-03 13:36:08,447 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1825 transitions. Word has length 74 [2024-11-03 13:36:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:08,448 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1825 transitions. [2024-11-03 13:36:08,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 13:36:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1825 transitions. [2024-11-03 13:36:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 13:36:08,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:08,450 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:08,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 13:36:08,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:08,652 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:08,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -777616002, now seen corresponding path program 1 times [2024-11-03 13:36:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:08,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176634051] [2024-11-03 13:36:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:08,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:08,654 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:08,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 13:36:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:08,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-03 13:36:08,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:11,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:13,068 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176634051] [2024-11-03 13:36:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [176634051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:13,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2024-11-03 13:36:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412925766] [2024-11-03 13:36:13,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:13,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-03 13:36:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-03 13:36:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:36:13,070 INFO L87 Difference]: Start difference. First operand 1373 states and 1825 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 13:36:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:31,098 INFO L93 Difference]: Finished difference Result 3261 states and 4193 transitions. [2024-11-03 13:36:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-03 13:36:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 74 [2024-11-03 13:36:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:31,106 INFO L225 Difference]: With dead ends: 3261 [2024-11-03 13:36:31,107 INFO L226 Difference]: Without dead ends: 2506 [2024-11-03 13:36:31,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5257 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2542, Invalid=18920, Unknown=0, NotChecked=0, Total=21462 [2024-11-03 13:36:31,109 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 1445 mSDsluCounter, 7332 mSDsCounter, 0 mSdLazyCounter, 4549 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 7739 SdHoareTripleChecker+Invalid, 4643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:31,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 7739 Invalid, 4643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4549 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-03 13:36:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-11-03 13:36:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1620. [2024-11-03 13:36:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 1.3335392217418158) internal successors, (2159), 1619 states have internal predecessors, (2159), 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 13:36:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2159 transitions. [2024-11-03 13:36:31,218 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2159 transitions. Word has length 74 [2024-11-03 13:36:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:31,218 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2159 transitions. [2024-11-03 13:36:31,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 13:36:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2159 transitions. [2024-11-03 13:36:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-03 13:36:31,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:31,221 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:36:31,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Ended with exit code 0 [2024-11-03 13:36:31,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:31,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:31,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1420916641, now seen corresponding path program 1 times [2024-11-03 13:36:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934532163] [2024-11-03 13:36:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:31,425 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:31,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 13:36:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:31,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:36:31,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:31,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:31,652 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934532163] [2024-11-03 13:36:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [934532163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:31,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-03 13:36:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722829371] [2024-11-03 13:36:31,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:36:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:36:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:36:31,653 INFO L87 Difference]: Start difference. First operand 1620 states and 2159 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 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 13:36:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:32,501 INFO L93 Difference]: Finished difference Result 7485 states and 10882 transitions. [2024-11-03 13:36:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:36:32,502 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 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 76 [2024-11-03 13:36:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:32,510 INFO L225 Difference]: With dead ends: 7485 [2024-11-03 13:36:32,510 INFO L226 Difference]: Without dead ends: 3696 [2024-11-03 13:36:32,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-03 13:36:32,512 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 242 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:32,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 188 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:36:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2024-11-03 13:36:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3086. [2024-11-03 13:36:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3085 states have (on average 1.1954619124797408) internal successors, (3688), 3085 states have internal predecessors, (3688), 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 13:36:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3688 transitions. [2024-11-03 13:36:32,804 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3688 transitions. Word has length 76 [2024-11-03 13:36:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:32,804 INFO L471 AbstractCegarLoop]: Abstraction has 3086 states and 3688 transitions. [2024-11-03 13:36:32,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 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 13:36:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3688 transitions. [2024-11-03 13:36:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-03 13:36:32,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:32,806 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-03 13:36:32,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Forceful destruction successful, exit code 0 [2024-11-03 13:36:33,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:33,007 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:33,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash 881251465, now seen corresponding path program 1 times [2024-11-03 13:36:33,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705410200] [2024-11-03 13:36:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:33,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:33,009 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:33,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 13:36:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:33,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 13:36:33,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:35,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:38,555 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:38,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705410200] [2024-11-03 13:36:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [705410200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:38,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2024-11-03 13:36:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151157924] [2024-11-03 13:36:38,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:38,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-03 13:36:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-03 13:36:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2098, Unknown=0, NotChecked=0, Total=2256 [2024-11-03 13:36:38,557 INFO L87 Difference]: Start difference. First operand 3086 states and 3688 transitions. Second operand has 48 states, 48 states have (on average 3.1666666666666665) internal successors, (152), 48 states have internal predecessors, (152), 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)