/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/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:37:35,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:37:36,016 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 13:37:36,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:37:36,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:37:36,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:37:36,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:37:36,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:37:36,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:37:36,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:37:36,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:37:36,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:37:36,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:37:36,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:37:36,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:37:36,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:37:36,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:37:36,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:37:36,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:37:36,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:37:36,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:37:36,062 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:37:36,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:37:36,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:37:36,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:37:36,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:37:36,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:37:36,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:37:36,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:37:36,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:36,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:37:36,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:37:36,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:37:36,065 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:37:36,065 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:37:36,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:37:36,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:37:36,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:37:36,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:37:36,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:37:36,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:37:36,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:37:36,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:37:36,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:37:36,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:37:36,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2024-11-03 13:37:37,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:37:37,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:37:37,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2024-11-03 13:37:37,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07180408e/cd9e7bb29b66471c9d0556542f1d90db/FLAG88843c027 [2024-11-03 13:37:37,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07180408e/cd9e7bb29b66471c9d0556542f1d90db [2024-11-03 13:37:37,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:37:37,993 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:37:37,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:37,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:37:37,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:37:38,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:37" (1/1) ... [2024-11-03 13:37:38,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aedd424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38, skipping insertion in model container [2024-11-03 13:37:38,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:37" (1/1) ... [2024-11-03 13:37:38,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:37:38,193 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/soft_float_4-2a.c.cil.c[755,768] [2024-11-03 13:37:38,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:38,263 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:37:38,273 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/soft_float_4-2a.c.cil.c[755,768] [2024-11-03 13:37:38,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:38,319 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:37:38,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38 WrapperNode [2024-11-03 13:37:38,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:38,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:38,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:37:38,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:37:38,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,350 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-03 13:37:38,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:38,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:37:38,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:37:38,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:37:38,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,382 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 13:37:38,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:37:38,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:37:38,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:37:38,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:37:38,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (1/1) ... [2024-11-03 13:37:38,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:38,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:37:38,428 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 13:37:38,430 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 13:37:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:37:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:37:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-03 13:37:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-03 13:37:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:37:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:37:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-03 13:37:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-03 13:37:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 13:37:38,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 13:37:38,518 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:37:38,520 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:37:38,771 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-03 13:37:38,772 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:37:38,791 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:37:38,791 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 13:37:38,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:38 BoogieIcfgContainer [2024-11-03 13:37:38,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:37:38,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:37:38,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:37:38,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:37:38,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:37:37" (1/3) ... [2024-11-03 13:37:38,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a1fa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:38, skipping insertion in model container [2024-11-03 13:37:38,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:38" (2/3) ... [2024-11-03 13:37:38,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a1fa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:38, skipping insertion in model container [2024-11-03 13:37:38,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:38" (3/3) ... [2024-11-03 13:37:38,804 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2024-11-03 13:37:38,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:37:38,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:37:38,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:37:38,884 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;@5795c617, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:37:38,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:37:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:37:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:37:38,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:38,898 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:38,898 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:38,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2030319843, now seen corresponding path program 1 times [2024-11-03 13:37:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166106430] [2024-11-03 13:37:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:38,915 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:38,917 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 13:37:38,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:37:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:39,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 13:37:39,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:39,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:39,460 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166106430] [2024-11-03 13:37:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [166106430] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:39,461 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 14 [2024-11-03 13:37:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929651328] [2024-11-03 13:37:39,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:39,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 13:37:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 13:37:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-03 13:37:39,494 INFO L87 Difference]: Start difference. First operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 14 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 13:37:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:39,801 INFO L93 Difference]: Finished difference Result 164 states and 256 transitions. [2024-11-03 13:37:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 13:37:39,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-03 13:37:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:39,812 INFO L225 Difference]: With dead ends: 164 [2024-11-03 13:37:39,812 INFO L226 Difference]: Without dead ends: 103 [2024-11-03 13:37:39,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:37:39,819 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 57 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:39,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 804 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-03 13:37:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2024-11-03 13:37:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 65 states have internal predecessors, (81), 16 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 13:37:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2024-11-03 13:37:39,881 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 31 [2024-11-03 13:37:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:39,881 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2024-11-03 13:37:39,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 13:37:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2024-11-03 13:37:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-03 13:37:39,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:39,885 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 13:37:39,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:40,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:40,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1468368814, now seen corresponding path program 1 times [2024-11-03 13:37:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313242607] [2024-11-03 13:37:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:40,091 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,093 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 13:37:40,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:37:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:40,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 13:37:40,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:40,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:40,261 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:40,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313242607] [2024-11-03 13:37:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1313242607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:40,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:40,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-03 13:37:40,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202081601] [2024-11-03 13:37:40,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:40,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:37:40,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:37:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:40,265 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 13:37:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:40,385 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2024-11-03 13:37:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:37:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-03 13:37:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:40,388 INFO L225 Difference]: With dead ends: 144 [2024-11-03 13:37:40,388 INFO L226 Difference]: Without dead ends: 104 [2024-11-03 13:37:40,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:37:40,390 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 15 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:40,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 472 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-03 13:37:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2024-11-03 13:37:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 75 states have internal predecessors, (92), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 13:37:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-03 13:37:40,406 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 35 [2024-11-03 13:37:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:40,407 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-03 13:37:40,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 13:37:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-03 13:37:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-03 13:37:40,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:40,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 13:37:40,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:40,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:40,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 622743942, now seen corresponding path program 1 times [2024-11-03 13:37:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688868299] [2024-11-03 13:37:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:40,614 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,616 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 13:37:40,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:37:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:40,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 13:37:40,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:40,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 13:37:40,768 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688868299] [2024-11-03 13:37:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1688868299] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:40,769 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2024-11-03 13:37:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235205290] [2024-11-03 13:37:40,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:40,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:40,771 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 13:37:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:40,848 INFO L93 Difference]: Finished difference Result 151 states and 196 transitions. [2024-11-03 13:37:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:37:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-03 13:37:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:40,850 INFO L225 Difference]: With dead ends: 151 [2024-11-03 13:37:40,850 INFO L226 Difference]: Without dead ends: 111 [2024-11-03 13:37:40,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:40,852 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:40,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 419 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-03 13:37:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2024-11-03 13:37:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 80 states have internal predecessors, (97), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 13:37:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-03 13:37:40,877 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 35 [2024-11-03 13:37:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:40,877 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-03 13:37:40,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 13:37:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-03 13:37:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 13:37:40,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:40,880 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:40,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:37:41,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:41,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 461161469, now seen corresponding path program 2 times [2024-11-03 13:37:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440189604] [2024-11-03 13:37:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:41,084 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 13:37:41,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:37:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:41,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-03 13:37:41,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 13:37:41,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 13:37:41,423 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440189604] [2024-11-03 13:37:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [440189604] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:41,423 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 13:37:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422632400] [2024-11-03 13:37:41,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:41,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:37:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:37:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:37:41,425 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 13:37:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:42,386 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2024-11-03 13:37:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:37:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-03 13:37:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:42,388 INFO L225 Difference]: With dead ends: 112 [2024-11-03 13:37:42,388 INFO L226 Difference]: Without dead ends: 110 [2024-11-03 13:37:42,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-03 13:37:42,391 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:42,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 483 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 13:37:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-03 13:37:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-11-03 13:37:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 13:37:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2024-11-03 13:37:42,414 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 39 [2024-11-03 13:37:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:42,415 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2024-11-03 13:37:42,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 13:37:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2024-11-03 13:37:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 13:37:42,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:42,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:42,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:42,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:42,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:42,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1162622522, now seen corresponding path program 1 times [2024-11-03 13:37:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797005100] [2024-11-03 13:37:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:42,622 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:42,623 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 13:37:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:37:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:42,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 13:37:42,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 13:37:42,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 13:37:43,379 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797005100] [2024-11-03 13:37:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [797005100] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:37:43,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:37:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 27 [2024-11-03 13:37:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187801873] [2024-11-03 13:37:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:43,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 13:37:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 13:37:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2024-11-03 13:37:43,381 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-03 13:37:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:43,697 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2024-11-03 13:37:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 13:37:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-03 13:37:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:43,700 INFO L225 Difference]: With dead ends: 149 [2024-11-03 13:37:43,700 INFO L226 Difference]: Without dead ends: 141 [2024-11-03 13:37:43,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2024-11-03 13:37:43,702 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 33 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:43,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 630 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-03 13:37:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 111. [2024-11-03 13:37:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 85 states have internal predecessors, (103), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 13:37:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2024-11-03 13:37:43,715 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 44 [2024-11-03 13:37:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:43,715 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2024-11-03 13:37:43,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-03 13:37:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2024-11-03 13:37:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-03 13:37:43,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:43,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:43,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:43,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:43,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:43,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -919754838, now seen corresponding path program 1 times [2024-11-03 13:37:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307804938] [2024-11-03 13:37:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:43,919 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:43,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:43,922 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 13:37:43,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:37:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:43,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:37:43,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 13:37:43,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 13:37:44,045 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:44,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307804938] [2024-11-03 13:37:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1307804938] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:44,045 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-03 13:37:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822402636] [2024-11-03 13:37:44,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:44,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:44,047 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 13:37:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:44,095 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2024-11-03 13:37:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:37:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2024-11-03 13:37:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:44,098 INFO L225 Difference]: With dead ends: 119 [2024-11-03 13:37:44,098 INFO L226 Difference]: Without dead ends: 92 [2024-11-03 13:37:44,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:44,099 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:44,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 374 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-03 13:37:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-03 13:37:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 71 states have internal predecessors, (87), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-03 13:37:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2024-11-03 13:37:44,112 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 46 [2024-11-03 13:37:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:44,112 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2024-11-03 13:37:44,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 13:37:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2024-11-03 13:37:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 13:37:44,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:44,113 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:44,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:37:44,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:44,316 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:44,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -168643793, now seen corresponding path program 1 times [2024-11-03 13:37:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164560505] [2024-11-03 13:37:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:44,321 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 13:37:44,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:37:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:44,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 13:37:44,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:44,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:44,931 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164560505] [2024-11-03 13:37:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [164560505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:44,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:44,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 13:37:44,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751911321] [2024-11-03 13:37:44,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:44,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 13:37:44,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 13:37:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2024-11-03 13:37:44,934 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:37:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:45,870 INFO L93 Difference]: Finished difference Result 158 states and 216 transitions. [2024-11-03 13:37:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-03 13:37:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 48 [2024-11-03 13:37:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:45,872 INFO L225 Difference]: With dead ends: 158 [2024-11-03 13:37:45,872 INFO L226 Difference]: Without dead ends: 147 [2024-11-03 13:37:45,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2024-11-03 13:37:45,874 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:45,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 983 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:37:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-03 13:37:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 122. [2024-11-03 13:37:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 96 states have internal predecessors, (110), 18 states have call successors, (18), 7 states have call predecessors, (18), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-03 13:37:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 161 transitions. [2024-11-03 13:37:45,889 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 161 transitions. Word has length 48 [2024-11-03 13:37:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:45,889 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 161 transitions. [2024-11-03 13:37:45,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:37:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 161 transitions. [2024-11-03 13:37:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 13:37:45,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:45,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:45,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:37:46,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:46,092 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:46,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash 291178745, now seen corresponding path program 2 times [2024-11-03 13:37:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:46,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365358107] [2024-11-03 13:37:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:46,093 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:46,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:46,095 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 13:37:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:37:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:46,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 13:37:46,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:46,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:46,614 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365358107] [2024-11-03 13:37:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365358107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:46,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:46,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 13:37:46,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546412392] [2024-11-03 13:37:46,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:46,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 13:37:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 13:37:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2024-11-03 13:37:46,617 INFO L87 Difference]: Start difference. First operand 122 states and 161 transitions. Second operand has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:37:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:47,480 INFO L93 Difference]: Finished difference Result 158 states and 216 transitions. [2024-11-03 13:37:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-03 13:37:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 48 [2024-11-03 13:37:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:47,483 INFO L225 Difference]: With dead ends: 158 [2024-11-03 13:37:47,483 INFO L226 Difference]: Without dead ends: 147 [2024-11-03 13:37:47,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2024-11-03 13:37:47,485 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 50 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:47,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1260 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:37:47,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-03 13:37:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2024-11-03 13:37:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 97 states have internal predecessors, (111), 19 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (36), 19 states have call predecessors, (36), 18 states have call successors, (36) [2024-11-03 13:37:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 166 transitions. [2024-11-03 13:37:47,511 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 166 transitions. Word has length 48 [2024-11-03 13:37:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:47,511 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 166 transitions. [2024-11-03 13:37:47,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 20 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:37:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 166 transitions. [2024-11-03 13:37:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 13:37:47,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:47,512 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-03 13:37:47,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:37:47,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:47,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:47,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -744862915, now seen corresponding path program 1 times [2024-11-03 13:37:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526813896] [2024-11-03 13:37:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:47,717 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 13:37:47,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:37:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:47,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 13:37:47,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:38:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 13:38:16,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:38:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 13:38:18,089 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:38:18,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526813896] [2024-11-03 13:38:18,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1526813896] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:38:18,089 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:38:18,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2024-11-03 13:38:18,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450415047] [2024-11-03 13:38:18,090 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:38:18,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 13:38:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:38:18,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 13:38:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=181, Unknown=7, NotChecked=0, Total=240 [2024-11-03 13:38:18,091 INFO L87 Difference]: Start difference. First operand 124 states and 166 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 13:38:22,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:26,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:30,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:34,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:38,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:42,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:50,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 13:38:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:38:55,420 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2024-11-03 13:38:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:38:55,421 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2024-11-03 13:38:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:38:55,422 INFO L225 Difference]: With dead ends: 146 [2024-11-03 13:38:55,422 INFO L226 Difference]: Without dead ends: 142 [2024-11-03 13:38:55,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=78, Invalid=255, Unknown=9, NotChecked=0, Total=342 [2024-11-03 13:38:55,424 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 28 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2024-11-03 13:38:55,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 520 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 7 Unknown, 0 Unchecked, 28.9s Time] [2024-11-03 13:38:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-03 13:38:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2024-11-03 13:38:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 98 states have internal predecessors, (112), 19 states have call successors, (19), 8 states have call predecessors, (19), 13 states have return successors, (36), 19 states have call predecessors, (36), 18 states have call successors, (36) [2024-11-03 13:38:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2024-11-03 13:38:55,443 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 49 [2024-11-03 13:38:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:38:55,443 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2024-11-03 13:38:55,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 13:38:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2024-11-03 13:38:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 13:38:55,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:38:55,445 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-03 13:38:55,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:38:55,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:55,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:38:55,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:38:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1176507543, now seen corresponding path program 1 times [2024-11-03 13:38:55,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:38:55,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495551294] [2024-11-03 13:38:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:38:55,647 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:38:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:55,648 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 13:38:55,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:38:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:38:55,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 13:38:55,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:38:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-03 13:38:56,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:38:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 13:38:59,287 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:38:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495551294] [2024-11-03 13:38:59,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1495551294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:38:59,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:38:59,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 23 [2024-11-03 13:38:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485791809] [2024-11-03 13:38:59,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:38:59,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 13:38:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:38:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 13:38:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-11-03 13:38:59,289 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-03 13:39:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:39:03,250 INFO L93 Difference]: Finished difference Result 155 states and 209 transitions. [2024-11-03 13:39:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-03 13:39:03,251 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 50 [2024-11-03 13:39:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:39:03,252 INFO L225 Difference]: With dead ends: 155 [2024-11-03 13:39:03,252 INFO L226 Difference]: Without dead ends: 143 [2024-11-03 13:39:03,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2024-11-03 13:39:03,254 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 68 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-03 13:39:03,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 963 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-03 13:39:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-03 13:39:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2024-11-03 13:39:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 96 states have internal predecessors, (110), 19 states have call successors, (19), 8 states have call predecessors, (19), 12 states have return successors, (35), 20 states have call predecessors, (35), 18 states have call successors, (35) [2024-11-03 13:39:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2024-11-03 13:39:03,271 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 50 [2024-11-03 13:39:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:39:03,271 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2024-11-03 13:39:03,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.142857142857143) internal successors, (45), 18 states have internal predecessors, (45), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-03 13:39:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2024-11-03 13:39:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 13:39:03,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:39:03,273 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-03 13:39:03,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-03 13:39:03,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:03,473 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:39:03,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:39:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -325172767, now seen corresponding path program 2 times [2024-11-03 13:39:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:39:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746127384] [2024-11-03 13:39:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:39:03,474 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:39:03,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:03,476 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 13:39:03,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:39:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:39:03,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-03 13:39:03,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:39:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 13:39:05,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:39:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:39:08,749 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:39:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746127384] [2024-11-03 13:39:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [746127384] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:39:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:39:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [13] total 28 [2024-11-03 13:39:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425485120] [2024-11-03 13:39:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:39:08,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-03 13:39:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:39:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-03 13:39:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-03 13:39:08,750 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 13:39:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:39:11,018 INFO L93 Difference]: Finished difference Result 151 states and 206 transitions. [2024-11-03 13:39:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-03 13:39:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-11-03 13:39:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:39:11,020 INFO L225 Difference]: With dead ends: 151 [2024-11-03 13:39:11,020 INFO L226 Difference]: Without dead ends: 142 [2024-11-03 13:39:11,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2024-11-03 13:39:11,022 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 32 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:39:11,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 756 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-03 13:39:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-03 13:39:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2024-11-03 13:39:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 97 states have internal predecessors, (111), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (37), 21 states have call predecessors, (37), 19 states have call successors, (37) [2024-11-03 13:39:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 168 transitions. [2024-11-03 13:39:11,034 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 168 transitions. Word has length 50 [2024-11-03 13:39:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:39:11,035 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 168 transitions. [2024-11-03 13:39:11,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-03 13:39:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 168 transitions. [2024-11-03 13:39:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 13:39:11,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:39:11,036 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:39:11,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:39:11,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:11,238 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:39:11,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:39:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1592416888, now seen corresponding path program 1 times [2024-11-03 13:39:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:39:11,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343458782] [2024-11-03 13:39:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:39:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:39:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:11,241 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 13:39:11,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:39:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:39:11,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 13:39:11,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:39:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 13:39:12,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:39:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 13:39:15,315 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:39:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343458782] [2024-11-03 13:39:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [343458782] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:39:15,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:39:15,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 24 [2024-11-03 13:39:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555512651] [2024-11-03 13:39:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:39:15,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 13:39:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:39:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 13:39:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-03 13:39:15,317 INFO L87 Difference]: Start difference. First operand 127 states and 168 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 13:39:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:39:17,026 INFO L93 Difference]: Finished difference Result 149 states and 203 transitions. [2024-11-03 13:39:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:39:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-11-03 13:39:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:39:17,028 INFO L225 Difference]: With dead ends: 149 [2024-11-03 13:39:17,028 INFO L226 Difference]: Without dead ends: 140 [2024-11-03 13:39:17,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2024-11-03 13:39:17,029 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 27 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:39:17,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 708 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 13:39:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-03 13:39:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2024-11-03 13:39:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 96 states have internal predecessors, (110), 19 states have call successors, (19), 8 states have call predecessors, (19), 12 states have return successors, (34), 20 states have call predecessors, (34), 18 states have call successors, (34) [2024-11-03 13:39:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2024-11-03 13:39:17,040 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 54 [2024-11-03 13:39:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:39:17,040 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2024-11-03 13:39:17,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 13:39:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2024-11-03 13:39:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 13:39:17,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:39:17,042 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:39:17,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 13:39:17,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:17,242 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:39:17,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:39:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1756521076, now seen corresponding path program 3 times [2024-11-03 13:39:17,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:39:17,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808759544] [2024-11-03 13:39:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:39:17,243 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:39:17,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:39:17,244 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 13:39:17,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:39:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:39:17,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 13:39:17,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:39:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 13:39:18,441 INFO L311 TraceCheckSpWp]: Computing backward predicates...