/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 Internal_SMTInterpol -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 00:47:15,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 00:47:15,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 00:47:15,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 00:47:15,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 00:47:15,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 00:47:15,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 00:47:15,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 00:47:15,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 00:47:15,441 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 00:47:15,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 00:47:15,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 00:47:15,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 00:47:15,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 00:47:15,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 00:47:15,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 00:47:15,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 00:47:15,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 00:47:15,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 00:47:15,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 00:47:15,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 00:47:15,450 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 00:47:15,451 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 00:47:15,451 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 00:47:15,451 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 00:47:15,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 00:47:15,452 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 00:47:15,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 00:47:15,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 00:47:15,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 00:47:15,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 00:47:15,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 00:47:15,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 00:47:15,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 00:47:15,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 00:47:15,454 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 00:47:15,454 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 00:47:15,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 00:47:15,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 00:47:15,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 00:47:15,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 00:47:15,456 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 00:47:15,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-01 00:47:15,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 00:47:15,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 00:47:15,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 00:47:15,824 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 00:47:15,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 00:47:15,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v6.c [2024-11-01 00:47:17,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 00:47:17,618 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 00:47:17,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v6.c [2024-11-01 00:47:17,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda7a879f/408a7a861d014638bb5f0817ebeb210a/FLAG744fe8ab3 [2024-11-01 00:47:17,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda7a879f/408a7a861d014638bb5f0817ebeb210a [2024-11-01 00:47:17,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 00:47:17,647 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 00:47:17,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 00:47:17,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 00:47:17,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 00:47:17,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 12:47:17" (1/1) ... [2024-11-01 00:47:17,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be81806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:17, skipping insertion in model container [2024-11-01 00:47:17,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 12:47:17" (1/1) ... [2024-11-01 00:47:17,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 00:47:17,883 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v6.c[1249,1262] [2024-11-01 00:47:17,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 00:47:18,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 00:47:18,020 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v6.c[1249,1262] [2024-11-01 00:47:18,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 00:47:18,116 INFO L204 MainTranslator]: Completed translation [2024-11-01 00:47:18,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18 WrapperNode [2024-11-01 00:47:18,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 00:47:18,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 00:47:18,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 00:47:18,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 00:47:18,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,180 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 359 [2024-11-01 00:47:18,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 00:47:18,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 00:47:18,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 00:47:18,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 00:47:18,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,223 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]. [2024-11-01 00:47:18,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 00:47:18,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 00:47:18,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 00:47:18,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 00:47:18,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (1/1) ... [2024-11-01 00:47:18,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 00:47:18,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 00:47:18,296 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) [2024-11-01 00:47:18,300 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 [2024-11-01 00:47:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 00:47:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 00:47:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 00:47:18,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 00:47:18,434 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 00:47:18,436 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 00:47:18,804 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-01 00:47:18,804 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 00:47:18,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 00:47:18,818 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 00:47:18,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 12:47:18 BoogieIcfgContainer [2024-11-01 00:47:18,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 00:47:18,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 00:47:18,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 00:47:18,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 00:47:18,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 12:47:17" (1/3) ... [2024-11-01 00:47:18,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aedd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 12:47:18, skipping insertion in model container [2024-11-01 00:47:18,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:47:18" (2/3) ... [2024-11-01 00:47:18,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aedd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 12:47:18, skipping insertion in model container [2024-11-01 00:47:18,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 12:47:18" (3/3) ... [2024-11-01 00:47:18,830 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.eq_sdp_v6.c [2024-11-01 00:47:18,847 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 00:47:18,848 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 00:47:18,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 00:47:18,903 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;@bfb9050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 00:47:18,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 00:47:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 00:47:18,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:47:18,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 00:47:18,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:47:18,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:47:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 00:47:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:47:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925300645] [2024-11-01 00:47:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:47:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 00:47:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 00:47:22,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-01 00:47:22,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 00:47:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:47:22,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 00:47:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:47:23,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 00:47:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925300645] [2024-11-01 00:47:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1925300645] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 00:47:23,260 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 00:47:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 00:47:23,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130743985] [2024-11-01 00:47:23,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 00:47:23,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 00:47:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 00:47:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 00:47:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 00:47:23,295 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 00:47:23,359 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2024-11-01 00:47:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 00:47:23,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-01 00:47:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 00:47:23,369 INFO L225 Difference]: With dead ends: 17 [2024-11-01 00:47:23,369 INFO L226 Difference]: Without dead ends: 9 [2024-11-01 00:47:23,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 00:47:23,375 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 00:47:23,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 00:47:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-01 00:47:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-01 00:47:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 00:47:23,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 00:47:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 00:47:23,404 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 00:47:23,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 00:47:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 00:47:23,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:47:23,405 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 00:47:23,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-01 00:47:23,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:47:23,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:47:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 00:47:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:47:23,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480890209] [2024-11-01 00:47:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:47:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 00:47:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 00:47:33,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-01 00:47:33,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 00:47:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:47:33,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 00:47:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:47:35,850 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 00:47:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480890209] [2024-11-01 00:47:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1480890209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 00:47:35,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 00:47:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-01 00:47:35,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029927720] [2024-11-01 00:47:35,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 00:47:35,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-01 00:47:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 00:47:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-01 00:47:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-01 00:47:35,855 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 00:47:36,067 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-11-01 00:47:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 00:47:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-01 00:47:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 00:47:36,070 INFO L225 Difference]: With dead ends: 14 [2024-11-01 00:47:36,070 INFO L226 Difference]: Without dead ends: 12 [2024-11-01 00:47:36,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-01 00:47:36,071 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 00:47:36,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 00:47:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-01 00:47:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-01 00:47:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-01 00:47:36,080 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-01 00:47:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 00:47:36,080 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-01 00:47:36,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:47:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-01 00:47:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-01 00:47:36,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:47:36,081 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-01 00:47:36,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-01 00:47:36,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:47:36,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:47:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-01 00:47:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:47:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460632956] [2024-11-01 00:47:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:47:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 00:47:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 00:47:59,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-01 00:47:59,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 00:47:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:47:59,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 00:48:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 00:48:04,456 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 00:48:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460632956] [2024-11-01 00:48:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [460632956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 00:48:04,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 00:48:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-11-01 00:48:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861242461] [2024-11-01 00:48:04,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 00:48:04,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-01 00:48:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 00:48:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-01 00:48:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-01 00:48:04,459 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:48:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 00:48:04,770 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-11-01 00:48:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 00:48:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-01 00:48:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 00:48:04,772 INFO L225 Difference]: With dead ends: 17 [2024-11-01 00:48:04,772 INFO L226 Difference]: Without dead ends: 15 [2024-11-01 00:48:04,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-01 00:48:04,773 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 00:48:04,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 00:48:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-01 00:48:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-01 00:48:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:48:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-01 00:48:04,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-11-01 00:48:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 00:48:04,778 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-01 00:48:04,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 00:48:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-01 00:48:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-01 00:48:04,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:48:04,779 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-01 00:48:04,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-01 00:48:04,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:48:04,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:48:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times [2024-11-01 00:48:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:48:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007092900] [2024-11-01 00:48:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:48:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms