/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_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:37:30,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:37:30,329 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 13:37:30,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:37:30,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:37:30,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:37:30,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:37:30,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:37:30,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:37:30,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:37:30,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:37:30,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:37:30,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:37:30,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:37:30,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:37:30,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:37:30,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:37:30,358 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:37:30,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:37:30,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:37:30,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:37:30,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:37:30,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:37:30,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:37:30,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:37:30,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:37:30,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:37:30,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:37:30,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:30,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:37:30,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:37:30,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:37:30,363 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:37:30,363 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:37:30,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:37:30,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:37:30,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:37:30,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:37:30,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:37:30,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:37:30,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:37:30,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:37:30,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:37:30,593 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:37:30,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2024-11-03 13:37:31,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:37:32,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:37:32,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2024-11-03 13:37:32,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7a32448/9a14e16790764a26917ec12ce3bd05da/FLAG12f347891 [2024-11-03 13:37:32,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7a32448/9a14e16790764a26917ec12ce3bd05da [2024-11-03 13:37:32,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:37:32,474 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:37:32,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:32,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:37:32,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:37:32,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a3870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32, skipping insertion in model container [2024-11-03 13:37:32,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:37:32,659 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_3a.c.cil.c[728,741] [2024-11-03 13:37:32,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:32,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:37:32,726 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_3a.c.cil.c[728,741] [2024-11-03 13:37:32,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:32,758 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:37:32,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32 WrapperNode [2024-11-03 13:37:32,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:32,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:32,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:37:32,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:37:32,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,786 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2024-11-03 13:37:32,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:32,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:37:32,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:37:32,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:37:32,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,806 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 13:37:32,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:37:32,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:37:32,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:37:32,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:37:32,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (1/1) ... [2024-11-03 13:37:32,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:32,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:37:32,856 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 13:37:32,863 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 13:37:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:37:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:37:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-03 13:37:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-03 13:37:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:37:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:37:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 13:37:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 13:37:32,950 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:37:32,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:37:33,277 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-03 13:37:33,277 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:37:33,290 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:37:33,290 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 13:37:33,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:33 BoogieIcfgContainer [2024-11-03 13:37:33,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:37:33,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:37:33,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:37:33,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:37:33,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:37:32" (1/3) ... [2024-11-03 13:37:33,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c916339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:33, skipping insertion in model container [2024-11-03 13:37:33,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:32" (2/3) ... [2024-11-03 13:37:33,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c916339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:33, skipping insertion in model container [2024-11-03 13:37:33,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:33" (3/3) ... [2024-11-03 13:37:33,299 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2024-11-03 13:37:33,310 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:37:33,311 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:37:33,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:37:33,361 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;@48b4abd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:37:33,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:37:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 44 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 13:37:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 13:37:33,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:33,371 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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 13:37:33,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:33,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1696138713, now seen corresponding path program 1 times [2024-11-03 13:37:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:33,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152549408] [2024-11-03 13:37:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:33,384 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:33,386 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 13:37:33,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:37:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:33,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:33,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:33,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:33,632 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152549408] [2024-11-03 13:37:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1152549408] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:37:33,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:37:33,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-03 13:37:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548116724] [2024-11-03 13:37:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:33,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:33,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:33,656 INFO L87 Difference]: Start difference. First operand has 51 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 44 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:33,780 INFO L93 Difference]: Finished difference Result 113 states and 179 transitions. [2024-11-03 13:37:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:37:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2024-11-03 13:37:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:33,790 INFO L225 Difference]: With dead ends: 113 [2024-11-03 13:37:33,790 INFO L226 Difference]: Without dead ends: 59 [2024-11-03 13:37:33,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:37:33,798 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:33,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 163 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-03 13:37:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2024-11-03 13:37:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-03 13:37:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-03 13:37:33,837 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 41 [2024-11-03 13:37:33,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:33,837 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-03 13:37:33,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:33,838 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-11-03 13:37:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 13:37:33,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:33,840 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:33,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:37:34,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:34,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:34,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1421820539, now seen corresponding path program 1 times [2024-11-03 13:37:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119948498] [2024-11-03 13:37:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:34,042 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:34,044 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 13:37:34,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:37:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:34,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:34,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:34,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:34,256 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119948498] [2024-11-03 13:37:34,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [119948498] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:37:34,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:37:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-03 13:37:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829557221] [2024-11-03 13:37:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:34,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:34,261 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:34,317 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-11-03 13:37:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:34,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-11-03 13:37:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:34,320 INFO L225 Difference]: With dead ends: 102 [2024-11-03 13:37:34,320 INFO L226 Difference]: Without dead ends: 59 [2024-11-03 13:37:34,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:34,322 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:34,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-03 13:37:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-03 13:37:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.391304347826087) internal successors, (64), 47 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:37:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 77 transitions. [2024-11-03 13:37:34,336 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 77 transitions. Word has length 44 [2024-11-03 13:37:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:34,336 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 77 transitions. [2024-11-03 13:37:34,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 77 transitions. [2024-11-03 13:37:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-03 13:37:34,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:34,339 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:34,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:34,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:34,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash -865634876, now seen corresponding path program 1 times [2024-11-03 13:37:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:34,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703632697] [2024-11-03 13:37:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:34,541 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:34,547 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 13:37:34,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:37:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:34,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:34,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:34,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:34,730 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703632697] [2024-11-03 13:37:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1703632697] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:37:34,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:37:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-03 13:37:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447111615] [2024-11-03 13:37:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:34,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:34,750 INFO L87 Difference]: Start difference. First operand 55 states and 77 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:34,834 INFO L93 Difference]: Finished difference Result 114 states and 162 transitions. [2024-11-03 13:37:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:37:34,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-11-03 13:37:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:34,836 INFO L225 Difference]: With dead ends: 114 [2024-11-03 13:37:34,836 INFO L226 Difference]: Without dead ends: 66 [2024-11-03 13:37:34,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:37:34,837 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 16 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:34,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 162 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-03 13:37:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2024-11-03 13:37:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:37:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-11-03 13:37:34,849 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2024-11-03 13:37:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:34,849 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-11-03 13:37:34,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-11-03 13:37:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-03 13:37:34,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:34,851 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:34,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:35,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:35,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 155611130, now seen corresponding path program 1 times [2024-11-03 13:37:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861982731] [2024-11-03 13:37:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:35,054 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,058 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 13:37:35,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:37:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:35,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:37:35,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:35,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:35,218 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:35,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861982731] [2024-11-03 13:37:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [861982731] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:37:35,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:37:35,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-03 13:37:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510987341] [2024-11-03 13:37:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:35,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:37:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:37:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:35,220 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:35,308 INFO L93 Difference]: Finished difference Result 122 states and 173 transitions. [2024-11-03 13:37:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:37:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-11-03 13:37:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:35,310 INFO L225 Difference]: With dead ends: 122 [2024-11-03 13:37:35,310 INFO L226 Difference]: Without dead ends: 73 [2024-11-03 13:37:35,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:35,311 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:35,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 216 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-03 13:37:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2024-11-03 13:37:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 49 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:37:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2024-11-03 13:37:35,318 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 46 [2024-11-03 13:37:35,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:35,318 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2024-11-03 13:37:35,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2024-11-03 13:37:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-03 13:37:35,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:35,319 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:35,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:37:35,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,521 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:35,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash 709732423, now seen corresponding path program 1 times [2024-11-03 13:37:35,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:35,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062198976] [2024-11-03 13:37:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:35,522 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,525 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 13:37:35,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:37:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:35,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:37:35,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:35,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:35,678 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062198976] [2024-11-03 13:37:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2062198976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:35,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:35,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2024-11-03 13:37:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963094571] [2024-11-03 13:37:35,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:35,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:37:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:37:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:37:35,679 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:35,722 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2024-11-03 13:37:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:37:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-03 13:37:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:35,724 INFO L225 Difference]: With dead ends: 89 [2024-11-03 13:37:35,724 INFO L226 Difference]: Without dead ends: 80 [2024-11-03 13:37:35,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:37:35,725 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:35,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 343 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-03 13:37:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-11-03 13:37:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.40625) internal successors, (90), 65 states have internal predecessors, (90), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-03 13:37:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2024-11-03 13:37:35,733 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 47 [2024-11-03 13:37:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:35,733 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2024-11-03 13:37:35,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2024-11-03 13:37:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 13:37:35,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:35,735 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:35,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:37:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,936 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -37920403, now seen corresponding path program 1 times [2024-11-03 13:37:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236362182] [2024-11-03 13:37:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:35,937 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:35,938 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 13:37:35,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:37:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:35,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:35,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 13:37:35,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 13:37:36,008 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236362182] [2024-11-03 13:37:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1236362182] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:36,009 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:36,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:37:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748360970] [2024-11-03 13:37:36,009 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:36,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:36,010 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:37:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:36,032 INFO L93 Difference]: Finished difference Result 87 states and 128 transitions. [2024-11-03 13:37:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:37:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-03 13:37:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:36,034 INFO L225 Difference]: With dead ends: 87 [2024-11-03 13:37:36,034 INFO L226 Difference]: Without dead ends: 76 [2024-11-03 13:37:36,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:36,035 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:36,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-03 13:37:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2024-11-03 13:37:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:37:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2024-11-03 13:37:36,047 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 49 [2024-11-03 13:37:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:36,047 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2024-11-03 13:37:36,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:37:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2024-11-03 13:37:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 13:37:36,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:36,048 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:36,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:37:36,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:36,254 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:36,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -847267029, now seen corresponding path program 1 times [2024-11-03 13:37:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:36,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088852176] [2024-11-03 13:37:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:36,255 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:36,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:36,256 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 13:37:36,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:37:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:36,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:37:36,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:36,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:36,571 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:36,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088852176] [2024-11-03 13:37:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2088852176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:36,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:36,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2024-11-03 13:37:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308694117] [2024-11-03 13:37:36,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:36,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:37:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:37:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:37:36,576 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:36,692 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2024-11-03 13:37:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 13:37:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-11-03 13:37:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:36,695 INFO L225 Difference]: With dead ends: 103 [2024-11-03 13:37:36,695 INFO L226 Difference]: Without dead ends: 97 [2024-11-03 13:37:36,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:37:36,696 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 42 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:36,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 423 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-03 13:37:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2024-11-03 13:37:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 79 states have internal predecessors, (101), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-03 13:37:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2024-11-03 13:37:36,716 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 49 [2024-11-03 13:37:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:36,717 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2024-11-03 13:37:36,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2024-11-03 13:37:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:37:36,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:36,723 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:36,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:37:36,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:36,925 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:36,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1596050609, now seen corresponding path program 1 times [2024-11-03 13:37:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:36,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191321312] [2024-11-03 13:37:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:36,926 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:36,930 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 13:37:36,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:37:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:36,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:37:36,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 13:37:37,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-03 13:37:37,049 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191321312] [2024-11-03 13:37:37,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1191321312] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:37,049 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:37,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-03 13:37:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582919382] [2024-11-03 13:37:37,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:37,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:37,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:37,050 INFO L87 Difference]: Start difference. First operand 89 states and 125 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:37:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:37,085 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-11-03 13:37:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:37:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2024-11-03 13:37:37,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:37,087 INFO L225 Difference]: With dead ends: 95 [2024-11-03 13:37:37,087 INFO L226 Difference]: Without dead ends: 81 [2024-11-03 13:37:37,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 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 13:37:37,088 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:37,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 352 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-03 13:37:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-03 13:37:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-03 13:37:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 114 transitions. [2024-11-03 13:37:37,095 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 114 transitions. Word has length 51 [2024-11-03 13:37:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:37,096 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 114 transitions. [2024-11-03 13:37:37,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:37:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 114 transitions. [2024-11-03 13:37:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 13:37:37,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:37,097 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:37,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:37:37,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:37,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:37,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash 3518586, now seen corresponding path program 1 times [2024-11-03 13:37:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764674408] [2024-11-03 13:37:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:37,298 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:37,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:37,301 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 13:37:37,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:37:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:37,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 13:37:37,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:37,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-03 13:37:37,497 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764674408] [2024-11-03 13:37:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1764674408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:37,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:37,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-03 13:37:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865392155] [2024-11-03 13:37:37,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:37,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:37,499 INFO L87 Difference]: Start difference. First operand 81 states and 114 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:37,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:37,566 INFO L93 Difference]: Finished difference Result 96 states and 128 transitions. [2024-11-03 13:37:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 13:37:37,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-03 13:37:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:37,568 INFO L225 Difference]: With dead ends: 96 [2024-11-03 13:37:37,568 INFO L226 Difference]: Without dead ends: 70 [2024-11-03 13:37:37,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-03 13:37:37,569 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 4 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:37,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 379 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-03 13:37:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-03 13:37:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-11-03 13:37:37,575 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 52 [2024-11-03 13:37:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:37,575 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-11-03 13:37:37,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:37:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-11-03 13:37:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-03 13:37:37,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:37,576 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:37,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:37:37,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:37,777 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:37,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1660243296, now seen corresponding path program 1 times [2024-11-03 13:37:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774022304] [2024-11-03 13:37:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:37,779 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 13:37:37,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:37:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:37,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:37:37,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:37,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:37,927 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774022304] [2024-11-03 13:37:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774022304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:37,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 13:37:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057327699] [2024-11-03 13:37:37,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:37,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:37,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:37,928 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:38,026 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2024-11-03 13:37:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:37:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-11-03 13:37:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:38,027 INFO L225 Difference]: With dead ends: 157 [2024-11-03 13:37:38,028 INFO L226 Difference]: Without dead ends: 94 [2024-11-03 13:37:38,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:38,028 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 26 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:38,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 222 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-03 13:37:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2024-11-03 13:37:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 70 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2024-11-03 13:37:38,039 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 53 [2024-11-03 13:37:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:38,039 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2024-11-03 13:37:38,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2024-11-03 13:37:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-03 13:37:38,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:38,040 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:38,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:38,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:38,241 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:38,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1428546401, now seen corresponding path program 1 times [2024-11-03 13:37:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323854556] [2024-11-03 13:37:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:38,242 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:38,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:38,246 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 13:37:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:37:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:38,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:37:38,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:38,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:38,413 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323854556] [2024-11-03 13:37:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1323854556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:38,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:38,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:37:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036778067] [2024-11-03 13:37:38,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:38,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:37:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:37:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:37:38,415 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:38,591 INFO L93 Difference]: Finished difference Result 181 states and 239 transitions. [2024-11-03 13:37:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:37:38,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2024-11-03 13:37:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:38,593 INFO L225 Difference]: With dead ends: 181 [2024-11-03 13:37:38,593 INFO L226 Difference]: Without dead ends: 110 [2024-11-03 13:37:38,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-03 13:37:38,594 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 99 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:38,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 238 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-03 13:37:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2024-11-03 13:37:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 74 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-03 13:37:38,601 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 55 [2024-11-03 13:37:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:38,601 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-03 13:37:38,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-03 13:37:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-03 13:37:38,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:38,602 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:38,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:37:38,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:38,803 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:38,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash 760121748, now seen corresponding path program 2 times [2024-11-03 13:37:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485498039] [2024-11-03 13:37:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:38,804 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:38,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:38,805 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 13:37:38,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:37:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:38,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 13:37:38,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:38,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:39,139 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485498039] [2024-11-03 13:37:39,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1485498039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:39,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:39,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-03 13:37:39,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460860743] [2024-11-03 13:37:39,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:39,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 13:37:39,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 13:37:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-03 13:37:39,141 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:39,499 INFO L93 Difference]: Finished difference Result 192 states and 259 transitions. [2024-11-03 13:37:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 13:37:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-03 13:37:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:39,500 INFO L225 Difference]: With dead ends: 192 [2024-11-03 13:37:39,500 INFO L226 Difference]: Without dead ends: 117 [2024-11-03 13:37:39,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2024-11-03 13:37:39,505 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:39,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 413 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-03 13:37:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2024-11-03 13:37:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.388235294117647) internal successors, (118), 88 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2024-11-03 13:37:39,522 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 62 [2024-11-03 13:37:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:39,523 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2024-11-03 13:37:39,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2024-11-03 13:37:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-03 13:37:39,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:39,524 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:39,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:39,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:39,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:39,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 690135967, now seen corresponding path program 2 times [2024-11-03 13:37:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751025689] [2024-11-03 13:37:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:39,731 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 13:37:39,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:37:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:39,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 13:37:39,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:39,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:40,121 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751025689] [2024-11-03 13:37:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1751025689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:40,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-03 13:37:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534563740] [2024-11-03 13:37:40,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 13:37:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 13:37:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-03 13:37:40,123 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:40,720 INFO L93 Difference]: Finished difference Result 251 states and 339 transitions. [2024-11-03 13:37:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 13:37:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-03 13:37:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:40,722 INFO L225 Difference]: With dead ends: 251 [2024-11-03 13:37:40,722 INFO L226 Difference]: Without dead ends: 162 [2024-11-03 13:37:40,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2024-11-03 13:37:40,723 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 243 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:40,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 665 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:37:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-03 13:37:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 106. [2024-11-03 13:37:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 98 states have internal predecessors, (135), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2024-11-03 13:37:40,730 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 67 [2024-11-03 13:37:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:40,731 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2024-11-03 13:37:40,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2024-11-03 13:37:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-03 13:37:40,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:40,731 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:40,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 13:37:40,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:40,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash -937304300, now seen corresponding path program 3 times [2024-11-03 13:37:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667702228] [2024-11-03 13:37:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:40,934 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:40,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:40,959 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:40,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 13:37:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:40,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-03 13:37:40,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:41,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:42,064 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667702228] [2024-11-03 13:37:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [667702228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:42,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-03 13:37:42,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841674638] [2024-11-03 13:37:42,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:42,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-03 13:37:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-03 13:37:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-03 13:37:42,066 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:43,490 INFO L93 Difference]: Finished difference Result 264 states and 371 transitions. [2024-11-03 13:37:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-03 13:37:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2024-11-03 13:37:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:43,492 INFO L225 Difference]: With dead ends: 264 [2024-11-03 13:37:43,492 INFO L226 Difference]: Without dead ends: 165 [2024-11-03 13:37:43,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=453, Invalid=807, Unknown=0, NotChecked=0, Total=1260 [2024-11-03 13:37:43,493 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 175 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:43,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1111 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:37:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-03 13:37:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2024-11-03 13:37:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 121 states have (on average 1.4710743801652892) internal successors, (178), 124 states have internal predecessors, (178), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 193 transitions. [2024-11-03 13:37:43,515 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 193 transitions. Word has length 80 [2024-11-03 13:37:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:43,516 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 193 transitions. [2024-11-03 13:37:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 193 transitions. [2024-11-03 13:37:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-03 13:37:43,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:43,517 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:43,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 13:37:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:43,717 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:43,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 851194271, now seen corresponding path program 3 times [2024-11-03 13:37:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599734159] [2024-11-03 13:37:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:43,719 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:43,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 13:37:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:43,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 13:37:43,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 26 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:44,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 4 proven. 283 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:45,286 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599734159] [2024-11-03 13:37:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599734159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:45,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:45,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-03 13:37:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631691637] [2024-11-03 13:37:45,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:45,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-03 13:37:45,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-03 13:37:45,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 13:37:45,290 INFO L87 Difference]: Start difference. First operand 132 states and 193 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:47,221 INFO L93 Difference]: Finished difference Result 355 states and 485 transitions. [2024-11-03 13:37:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-03 13:37:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2024-11-03 13:37:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:47,225 INFO L225 Difference]: With dead ends: 355 [2024-11-03 13:37:47,225 INFO L226 Difference]: Without dead ends: 230 [2024-11-03 13:37:47,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=936, Invalid=2256, Unknown=0, NotChecked=0, Total=3192 [2024-11-03 13:37:47,227 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 520 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:47,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1665 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 13:37:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-03 13:37:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 136. [2024-11-03 13:37:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 125 states have (on average 1.48) internal successors, (185), 128 states have internal predecessors, (185), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 200 transitions. [2024-11-03 13:37:47,242 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 200 transitions. Word has length 91 [2024-11-03 13:37:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:47,242 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 200 transitions. [2024-11-03 13:37:47,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 200 transitions. [2024-11-03 13:37:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-03 13:37:47,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:47,243 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:47,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-03 13:37:47,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:47,445 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:47,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1448176148, now seen corresponding path program 4 times [2024-11-03 13:37:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461733155] [2024-11-03 13:37:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:47,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:47,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 13:37:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:47,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-03 13:37:47,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:37:48,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-03 13:37:50,112 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461733155] [2024-11-03 13:37:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [461733155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:50,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-03 13:37:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426055129] [2024-11-03 13:37:50,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:50,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-03 13:37:50,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-03 13:37:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2024-11-03 13:37:50,114 INFO L87 Difference]: Start difference. First operand 136 states and 200 transitions. Second operand has 50 states, 50 states have (on average 3.64) internal successors, (182), 50 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:58,651 INFO L93 Difference]: Finished difference Result 390 states and 565 transitions. [2024-11-03 13:37:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-03 13:37:58,652 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.64) internal successors, (182), 50 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2024-11-03 13:37:58,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:58,653 INFO L225 Difference]: With dead ends: 390 [2024-11-03 13:37:58,653 INFO L226 Difference]: Without dead ends: 261 [2024-11-03 13:37:58,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1773, Invalid=3339, Unknown=0, NotChecked=0, Total=5112 [2024-11-03 13:37:58,655 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 860 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:58,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3009 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-03 13:37:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-03 13:37:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 204. [2024-11-03 13:37:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 193 states have (on average 1.544041450777202) internal successors, (298), 196 states have internal predecessors, (298), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 313 transitions. [2024-11-03 13:37:58,683 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 313 transitions. Word has length 116 [2024-11-03 13:37:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:58,683 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 313 transitions. [2024-11-03 13:37:58,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.64) internal successors, (182), 50 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 13:37:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 313 transitions. [2024-11-03 13:37:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-03 13:37:58,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:58,684 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:58,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 13:37:58,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:58,889 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:58,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1767379743, now seen corresponding path program 4 times [2024-11-03 13:37:58,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:58,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494003219] [2024-11-03 13:37:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:58,890 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:58,892 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:58,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 13:37:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:58,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 13:37:58,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2024-11-03 13:37:58,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2024-11-03 13:37:59,053 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494003219] [2024-11-03 13:37:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1494003219] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:59,054 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2024-11-03 13:37:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780445904] [2024-11-03 13:37:59,054 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:59,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:37:59,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:37:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:59,055 INFO L87 Difference]: Start difference. First operand 204 states and 313 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 13:37:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:59,107 INFO L93 Difference]: Finished difference Result 235 states and 352 transitions. [2024-11-03 13:37:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:37:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 121 [2024-11-03 13:37:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:59,109 INFO L225 Difference]: With dead ends: 235 [2024-11-03 13:37:59,109 INFO L226 Difference]: Without dead ends: 207 [2024-11-03 13:37:59,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:37:59,110 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:59,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 273 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-03 13:37:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-03 13:37:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 196 states have (on average 1.5357142857142858) internal successors, (301), 198 states have internal predecessors, (301), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 13:37:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 316 transitions. [2024-11-03 13:37:59,120 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 316 transitions. Word has length 121 [2024-11-03 13:37:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:59,121 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 316 transitions. [2024-11-03 13:37:59,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 13:37:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 316 transitions. [2024-11-03 13:37:59,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-03 13:37:59,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:59,121 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:59,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:59,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:59,323 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:59,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1180573729, now seen corresponding path program 1 times [2024-11-03 13:37:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983990882] [2024-11-03 13:37:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:59,323 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:59,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:59,325 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:59,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 13:37:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:59,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-03 13:37:59,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:38:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 10 proven. 838 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 13:38:00,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:38:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 10 proven. 838 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 13:38:05,326 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:38:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983990882] [2024-11-03 13:38:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [983990882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:38:05,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:38:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2024-11-03 13:38:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388827779] [2024-11-03 13:38:05,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:38:05,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-03 13:38:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:38:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-03 13:38:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=3524, Unknown=0, NotChecked=0, Total=4290 [2024-11-03 13:38:05,329 INFO L87 Difference]: Start difference. First operand 207 states and 316 transitions. Second operand has 66 states, 66 states have (on average 2.9393939393939394) internal successors, (194), 62 states have internal predecessors, (194), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:38:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:38:21,508 INFO L93 Difference]: Finished difference Result 356 states and 529 transitions. [2024-11-03 13:38:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-03 13:38:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.9393939393939394) internal successors, (194), 62 states have internal predecessors, (194), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 121 [2024-11-03 13:38:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:38:21,511 INFO L225 Difference]: With dead ends: 356 [2024-11-03 13:38:21,511 INFO L226 Difference]: Without dead ends: 333 [2024-11-03 13:38:21,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=3124, Invalid=11638, Unknown=0, NotChecked=0, Total=14762 [2024-11-03 13:38:21,515 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1066 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 5873 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 5873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:38:21,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 3083 Invalid, 6784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 5873 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-03 13:38:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-03 13:38:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 225. [2024-11-03 13:38:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 211 states have (on average 1.5308056872037914) internal successors, (323), 214 states have internal predecessors, (323), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-03 13:38:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 349 transitions. [2024-11-03 13:38:21,544 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 349 transitions. Word has length 121 [2024-11-03 13:38:21,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:38:21,544 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 349 transitions. [2024-11-03 13:38:21,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.9393939393939394) internal successors, (194), 62 states have internal predecessors, (194), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-03 13:38:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 349 transitions. [2024-11-03 13:38:21,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-03 13:38:21,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:38:21,546 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:38:21,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-03 13:38:21,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:21,746 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:38:21,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:38:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1474812810, now seen corresponding path program 5 times [2024-11-03 13:38:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:38:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929429082] [2024-11-03 13:38:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:38:21,747 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:38:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:21,748 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:38:21,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 13:38:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:38:21,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 13:38:21,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:38:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2024-11-03 13:38:21,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:38:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2024-11-03 13:38:21,955 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:38:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929429082] [2024-11-03 13:38:21,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1929429082] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:38:21,956 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:38:21,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2024-11-03 13:38:21,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930330452] [2024-11-03 13:38:21,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:38:21,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:38:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:38:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:38:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:38:21,957 INFO L87 Difference]: Start difference. First operand 225 states and 349 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:38:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:38:22,075 INFO L93 Difference]: Finished difference Result 242 states and 367 transitions. [2024-11-03 13:38:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:38:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 125 [2024-11-03 13:38:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:38:22,076 INFO L225 Difference]: With dead ends: 242 [2024-11-03 13:38:22,077 INFO L226 Difference]: Without dead ends: 228 [2024-11-03 13:38:22,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-03 13:38:22,077 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 8 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:38:22,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 436 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:38:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-03 13:38:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2024-11-03 13:38:22,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 212 states have (on average 1.528301886792453) internal successors, (324), 215 states have internal predecessors, (324), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-03 13:38:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 350 transitions. [2024-11-03 13:38:22,099 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 350 transitions. Word has length 125 [2024-11-03 13:38:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:38:22,099 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 350 transitions. [2024-11-03 13:38:22,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:38:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 350 transitions. [2024-11-03 13:38:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-03 13:38:22,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:38:22,100 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:38:22,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Ended with exit code 0 [2024-11-03 13:38:22,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:22,301 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:38:22,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:38:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash 888006796, now seen corresponding path program 2 times [2024-11-03 13:38:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:38:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847426447] [2024-11-03 13:38:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:38:22,301 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:38:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:38:22,302 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:38:22,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-03 13:38:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:38:22,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-03 13:38:22,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:38:25,146 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_base2flt_~e_576 (_ BitVec 32)) (v_base2flt_~m_592 (_ BitVec 32))) (and (not (bvuge v_base2flt_~m_592 (_ bv33554432 32))) (= c_base2flt_~__retres4~0 (bvor (bvand v_base2flt_~m_592 (_ bv4278190079 32)) (bvshl (bvadd (_ bv128 32) v_base2flt_~e_576) (_ bv24 32)))))) is different from true [2024-11-03 13:38:26,752 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_base2flt_~e_576 (_ BitVec 32)) (v_base2flt_~m_592 (_ BitVec 32))) (and (not (bvuge v_base2flt_~m_592 (_ bv33554432 32))) (= (bvor (bvand v_base2flt_~m_592 (_ bv4278190079 32)) (bvshl (bvadd (_ bv128 32) v_base2flt_~e_576) (_ bv24 32))) |c_base2flt_#res|))) is different from true [2024-11-03 13:38:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 11 proven. 837 refuted. 0 times theorem prover too weak. 15 trivial. 3 not checked. [2024-11-03 13:38:32,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:38:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 4 proven. 840 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 13:38:36,418 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:38:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847426447] [2024-11-03 13:38:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [847426447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:38:36,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:38:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35] total 70 [2024-11-03 13:38:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925038400] [2024-11-03 13:38:36,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:38:36,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-03 13:38:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:38:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-03 13:38:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=3776, Unknown=5, NotChecked=266, Total=4830 [2024-11-03 13:38:36,422 INFO L87 Difference]: Start difference. First operand 226 states and 350 transitions. Second operand has 70 states, 70 states have (on average 2.8) internal successors, (196), 66 states have internal predecessors, (196), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7)