/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 15:03:25,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 15:03:25,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 15:03:25,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 15:03:25,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 15:03:25,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 15:03:25,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 15:03:25,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 15:03:25,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 15:03:25,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 15:03:25,677 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 15:03:25,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 15:03:25,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 15:03:25,680 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 15:03:25,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 15:03:25,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 15:03:25,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 15:03:25,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 15:03:25,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 15:03:25,682 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 15:03:25,683 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 15:03:25,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 15:03:25,686 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 15:03:25,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 15:03:25,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 15:03:25,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 15:03:25,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 15:03:25,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 15:03:25,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 15:03:25,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 15:03:25,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:03:25,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 15:03:25,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 15:03:25,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 15:03:25,690 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 15:03:25,690 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 15:03:25,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 15:03:25,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 15:03:25,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 15:03:25,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 15:03:25,691 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 15:03:25,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-10-31 15:03:26,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 15:03:26,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 15:03:26,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 15:03:26,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 15:03:26,055 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 15:03:26,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2024-10-31 15:03:27,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 15:03:27,636 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 15:03:27,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c [2024-10-31 15:03:27,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075d174b9/f06776f8667740d290d8cd90e8ca669e/FLAG857554e5b [2024-10-31 15:03:27,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075d174b9/f06776f8667740d290d8cd90e8ca669e [2024-10-31 15:03:27,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 15:03:27,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 15:03:27,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 15:03:27,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 15:03:27,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 15:03:27,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:03:27" (1/1) ... [2024-10-31 15:03:27,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec8537c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:27, skipping insertion in model container [2024-10-31 15:03:27,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:03:27" (1/1) ... [2024-10-31 15:03:27,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 15:03:27,973 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c[37676,37689] [2024-10-31 15:03:27,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:03:27,997 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 15:03:28,059 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_2.BV.c.cil-1a.c[37676,37689] [2024-10-31 15:03:28,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:03:28,082 INFO L204 MainTranslator]: Completed translation [2024-10-31 15:03:28,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28 WrapperNode [2024-10-31 15:03:28,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 15:03:28,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 15:03:28,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 15:03:28,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 15:03:28,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,144 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 470 [2024-10-31 15:03:28,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 15:03:28,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 15:03:28,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 15:03:28,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 15:03:28,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,187 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]. [2024-10-31 15:03:28,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 15:03:28,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 15:03:28,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 15:03:28,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 15:03:28,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (1/1) ... [2024-10-31 15:03:28,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:03:28,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 15:03:28,264 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) [2024-10-31 15:03:28,271 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 [2024-10-31 15:03:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 15:03:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 15:03:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 15:03:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 15:03:28,385 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 15:03:28,387 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 15:03:28,406 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-31 15:03:28,872 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2024-10-31 15:03:28,873 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2024-10-31 15:03:28,926 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-10-31 15:03:28,927 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 15:03:28,951 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 15:03:28,952 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 15:03:28,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:03:28 BoogieIcfgContainer [2024-10-31 15:03:28,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 15:03:28,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 15:03:28,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 15:03:28,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 15:03:28,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 03:03:27" (1/3) ... [2024-10-31 15:03:28,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:03:28, skipping insertion in model container [2024-10-31 15:03:28,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:03:28" (2/3) ... [2024-10-31 15:03:28,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:03:28, skipping insertion in model container [2024-10-31 15:03:28,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:03:28" (3/3) ... [2024-10-31 15:03:28,961 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2024-10-31 15:03:28,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 15:03:28,978 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 15:03:29,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 15:03:29,046 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;@4454966d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 15:03:29,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 15:03:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 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) [2024-10-31 15:03:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-31 15:03:29,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:29,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:29,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:29,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2024-10-31 15:03:29,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328356251] [2024-10-31 15:03:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:29,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:29,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:29,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:29,358 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328356251] [2024-10-31 15:03:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328356251] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:29,359 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390344376] [2024-10-31 15:03:29,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:29,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:29,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:29,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:29,396 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 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 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-10-31 15:03:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:29,581 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2024-10-31 15:03:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2024-10-31 15:03:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:29,592 INFO L225 Difference]: With dead ends: 246 [2024-10-31 15:03:29,592 INFO L226 Difference]: Without dead ends: 112 [2024-10-31 15:03:29,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:29,598 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:29,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 319 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:03:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-31 15:03:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-31 15:03:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 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) [2024-10-31 15:03:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2024-10-31 15:03:29,644 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2024-10-31 15:03:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:29,645 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2024-10-31 15:03:29,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-10-31 15:03:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2024-10-31 15:03:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-31 15:03:29,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:29,649 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-31 15:03:29,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 15:03:29,649 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:29,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2024-10-31 15:03:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893088776] [2024-10-31 15:03:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:29,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:29,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:29,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:29,824 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:29,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893088776] [2024-10-31 15:03:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1893088776] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:29,825 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443919955] [2024-10-31 15:03:29,825 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:29,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:29,830 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-31 15:03:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:29,994 INFO L93 Difference]: Finished difference Result 229 states and 350 transitions. [2024-10-31 15:03:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-10-31 15:03:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:29,996 INFO L225 Difference]: With dead ends: 229 [2024-10-31 15:03:29,996 INFO L226 Difference]: Without dead ends: 127 [2024-10-31 15:03:29,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:29,997 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:29,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 239 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:03:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-31 15:03:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-10-31 15:03:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 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) [2024-10-31 15:03:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2024-10-31 15:03:30,016 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2024-10-31 15:03:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:30,017 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2024-10-31 15:03:30,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-31 15:03:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2024-10-31 15:03:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-31 15:03:30,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:30,021 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:30,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 15:03:30,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:30,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2024-10-31 15:03:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912792174] [2024-10-31 15:03:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:30,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:30,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 15:03:30,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 15:03:30,185 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912792174] [2024-10-31 15:03:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912792174] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:30,185 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106374202] [2024-10-31 15:03:30,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:30,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:30,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:30,187 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:03:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:30,316 INFO L93 Difference]: Finished difference Result 261 states and 394 transitions. [2024-10-31 15:03:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-31 15:03:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:30,318 INFO L225 Difference]: With dead ends: 261 [2024-10-31 15:03:30,318 INFO L226 Difference]: Without dead ends: 144 [2024-10-31 15:03:30,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:30,320 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 10 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:30,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:03:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-31 15:03:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-10-31 15:03:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 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) [2024-10-31 15:03:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2024-10-31 15:03:30,329 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2024-10-31 15:03:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:30,329 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2024-10-31 15:03:30,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:03:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2024-10-31 15:03:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 15:03:30,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:30,331 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:30,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 15:03:30,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:30,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2024-10-31 15:03:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544512074] [2024-10-31 15:03:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:30,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:30,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 15:03:30,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 15:03:30,539 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:30,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544512074] [2024-10-31 15:03:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [544512074] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:30,540 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:30,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811419840] [2024-10-31 15:03:30,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:30,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:30,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:30,543 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-31 15:03:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:30,821 INFO L93 Difference]: Finished difference Result 341 states and 525 transitions. [2024-10-31 15:03:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 67 [2024-10-31 15:03:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:30,824 INFO L225 Difference]: With dead ends: 341 [2024-10-31 15:03:30,824 INFO L226 Difference]: Without dead ends: 207 [2024-10-31 15:03:30,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:30,829 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 74 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:30,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 249 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 15:03:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-31 15:03:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-10-31 15:03:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.441747572815534) internal successors, (297), 206 states have internal predecessors, (297), 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) [2024-10-31 15:03:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2024-10-31 15:03:30,850 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2024-10-31 15:03:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:30,851 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2024-10-31 15:03:30,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-31 15:03:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2024-10-31 15:03:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 15:03:30,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:30,853 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 15:03:30,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:30,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2024-10-31 15:03:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:30,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775810468] [2024-10-31 15:03:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:30,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:30,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 15:03:30,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 15:03:30,996 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775810468] [2024-10-31 15:03:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1775810468] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:30,997 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653646601] [2024-10-31 15:03:30,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:30,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:30,999 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 15:03:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:31,122 INFO L93 Difference]: Finished difference Result 423 states and 614 transitions. [2024-10-31 15:03:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2024-10-31 15:03:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:31,124 INFO L225 Difference]: With dead ends: 423 [2024-10-31 15:03:31,124 INFO L226 Difference]: Without dead ends: 226 [2024-10-31 15:03:31,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:31,128 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:31,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 257 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:03:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-31 15:03:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-10-31 15:03:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4266666666666667) internal successors, (321), 225 states have internal predecessors, (321), 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) [2024-10-31 15:03:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2024-10-31 15:03:31,144 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2024-10-31 15:03:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:31,144 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2024-10-31 15:03:31,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-31 15:03:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2024-10-31 15:03:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 15:03:31,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:31,146 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:31,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 15:03:31,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:31,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2024-10-31 15:03:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570369376] [2024-10-31 15:03:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:31,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:31,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-31 15:03:31,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-31 15:03:31,270 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570369376] [2024-10-31 15:03:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570369376] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:31,270 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:31,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:31,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093201890] [2024-10-31 15:03:31,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:31,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:31,272 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-31 15:03:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:31,390 INFO L93 Difference]: Finished difference Result 463 states and 666 transitions. [2024-10-31 15:03:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 84 [2024-10-31 15:03:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:31,394 INFO L225 Difference]: With dead ends: 463 [2024-10-31 15:03:31,394 INFO L226 Difference]: Without dead ends: 247 [2024-10-31 15:03:31,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:31,396 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:31,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 256 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:03:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-10-31 15:03:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2024-10-31 15:03:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.410569105691057) internal successors, (347), 246 states have internal predecessors, (347), 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) [2024-10-31 15:03:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2024-10-31 15:03:31,416 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2024-10-31 15:03:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:31,417 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2024-10-31 15:03:31,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-31 15:03:31,420 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2024-10-31 15:03:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 15:03:31,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:31,422 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:31,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 15:03:31,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:31,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2024-10-31 15:03:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:31,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858852809] [2024-10-31 15:03:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:31,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 15:03:31,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 15:03:31,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 15:03:31,658 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:31,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858852809] [2024-10-31 15:03:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858852809] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:31,659 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911444749] [2024-10-31 15:03:31,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:31,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:31,661 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-31 15:03:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:31,712 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2024-10-31 15:03:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 103 [2024-10-31 15:03:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:31,716 INFO L225 Difference]: With dead ends: 743 [2024-10-31 15:03:31,716 INFO L226 Difference]: Without dead ends: 506 [2024-10-31 15:03:31,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:31,718 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 257 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:31,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 381 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-10-31 15:03:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-10-31 15:03:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.39009900990099) internal successors, (702), 505 states have internal predecessors, (702), 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) [2024-10-31 15:03:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2024-10-31 15:03:31,735 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2024-10-31 15:03:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:31,735 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2024-10-31 15:03:31,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-31 15:03:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2024-10-31 15:03:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 15:03:31,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:31,737 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:31,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 15:03:31,737 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2024-10-31 15:03:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:31,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810370997] [2024-10-31 15:03:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:31,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:31,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-31 15:03:31,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-31 15:03:31,873 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:31,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810370997] [2024-10-31 15:03:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [810370997] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:31,874 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:31,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:31,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495680794] [2024-10-31 15:03:31,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:31,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:31,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:31,876 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-10-31 15:03:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:31,903 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2024-10-31 15:03:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:31,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 103 [2024-10-31 15:03:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:31,905 INFO L225 Difference]: With dead ends: 1023 [2024-10-31 15:03:31,905 INFO L226 Difference]: Without dead ends: 527 [2024-10-31 15:03:31,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:31,910 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 11 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 337 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 [2024-10-31 15:03:31,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 337 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-10-31 15:03:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-10-31 15:03:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3859315589353611) internal successors, (729), 526 states have internal predecessors, (729), 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) [2024-10-31 15:03:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2024-10-31 15:03:31,928 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2024-10-31 15:03:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:31,929 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2024-10-31 15:03:31,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-10-31 15:03:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2024-10-31 15:03:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 15:03:31,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:31,933 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:31,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 15:03:31,934 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:31,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2024-10-31 15:03:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:31,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533863197] [2024-10-31 15:03:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:31,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:31,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-10-31 15:03:32,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-10-31 15:03:32,069 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533863197] [2024-10-31 15:03:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1533863197] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:32,069 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426835832] [2024-10-31 15:03:32,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:32,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:32,071 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-31 15:03:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:32,096 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2024-10-31 15:03:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 104 [2024-10-31 15:03:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:32,100 INFO L225 Difference]: With dead ends: 1070 [2024-10-31 15:03:32,100 INFO L226 Difference]: Without dead ends: 553 [2024-10-31 15:03:32,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:32,103 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 309 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 [2024-10-31 15:03:32,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 309 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-10-31 15:03:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-10-31 15:03:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.3804347826086956) internal successors, (762), 552 states have internal predecessors, (762), 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) [2024-10-31 15:03:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2024-10-31 15:03:32,125 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2024-10-31 15:03:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:32,125 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2024-10-31 15:03:32,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-31 15:03:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2024-10-31 15:03:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-31 15:03:32,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:32,127 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:32,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 15:03:32,127 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:32,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2024-10-31 15:03:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:32,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439145065] [2024-10-31 15:03:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:32,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:32,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-10-31 15:03:32,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-10-31 15:03:32,271 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439145065] [2024-10-31 15:03:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1439145065] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:32,271 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321953195] [2024-10-31 15:03:32,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:32,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:32,273 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-31 15:03:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:32,338 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2024-10-31 15:03:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 105 [2024-10-31 15:03:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:32,342 INFO L225 Difference]: With dead ends: 1520 [2024-10-31 15:03:32,343 INFO L226 Difference]: Without dead ends: 1003 [2024-10-31 15:03:32,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:32,344 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 259 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:32,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 590 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-10-31 15:03:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2024-10-31 15:03:32,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3892215568862276) internal successors, (1392), 1002 states have internal predecessors, (1392), 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) [2024-10-31 15:03:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2024-10-31 15:03:32,369 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2024-10-31 15:03:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:32,369 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2024-10-31 15:03:32,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-31 15:03:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2024-10-31 15:03:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-31 15:03:32,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:32,372 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:32,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 15:03:32,372 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:32,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2024-10-31 15:03:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:32,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991841279] [2024-10-31 15:03:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:32,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:32,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-31 15:03:32,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-31 15:03:32,463 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991841279] [2024-10-31 15:03:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991841279] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:32,463 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780284073] [2024-10-31 15:03:32,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:32,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:32,465 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-10-31 15:03:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:32,657 INFO L93 Difference]: Finished difference Result 2062 states and 2905 transitions. [2024-10-31 15:03:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 173 [2024-10-31 15:03:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:32,662 INFO L225 Difference]: With dead ends: 2062 [2024-10-31 15:03:32,662 INFO L226 Difference]: Without dead ends: 1095 [2024-10-31 15:03:32,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:32,664 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 75 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:32,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 219 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2024-10-31 15:03:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1095. [2024-10-31 15:03:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 1.3711151736745886) internal successors, (1500), 1094 states have internal predecessors, (1500), 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) [2024-10-31 15:03:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2024-10-31 15:03:32,690 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2024-10-31 15:03:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:32,690 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2024-10-31 15:03:32,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-10-31 15:03:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2024-10-31 15:03:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-10-31 15:03:32,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:32,693 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:32,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 15:03:32,693 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:32,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2024-10-31 15:03:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:32,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393780409] [2024-10-31 15:03:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:32,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:32,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-31 15:03:32,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-31 15:03:33,053 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:33,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393780409] [2024-10-31 15:03:33,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [393780409] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:33,053 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759945270] [2024-10-31 15:03:33,053 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:33,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:33,055 INFO L87 Difference]: Start difference. First operand 1095 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-31 15:03:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:33,088 INFO L93 Difference]: Finished difference Result 2409 states and 3304 transitions. [2024-10-31 15:03:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:33,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 194 [2024-10-31 15:03:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:33,095 INFO L225 Difference]: With dead ends: 2409 [2024-10-31 15:03:33,095 INFO L226 Difference]: Without dead ends: 1350 [2024-10-31 15:03:33,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:33,097 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 111 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:33,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 466 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2024-10-31 15:03:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2024-10-31 15:03:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.369162342475908) internal successors, (1847), 1349 states have internal predecessors, (1847), 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) [2024-10-31 15:03:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1847 transitions. [2024-10-31 15:03:33,133 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1847 transitions. Word has length 194 [2024-10-31 15:03:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:33,133 INFO L471 AbstractCegarLoop]: Abstraction has 1350 states and 1847 transitions. [2024-10-31 15:03:33,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-31 15:03:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1847 transitions. [2024-10-31 15:03:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-31 15:03:33,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:33,137 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:33,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 15:03:33,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:33,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:33,138 INFO L85 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2024-10-31 15:03:33,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141312303] [2024-10-31 15:03:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:33,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 15:03:33,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 458 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-31 15:03:33,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 442 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-31 15:03:33,924 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141312303] [2024-10-31 15:03:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141312303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:03:33,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:03:33,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-31 15:03:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203551350] [2024-10-31 15:03:33,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:03:33,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 15:03:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 15:03:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-31 15:03:33,927 INFO L87 Difference]: Start difference. First operand 1350 states and 1847 transitions. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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) [2024-10-31 15:03:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:34,522 INFO L93 Difference]: Finished difference Result 3030 states and 4192 transitions. [2024-10-31 15:03:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 15:03:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 196 [2024-10-31 15:03:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:34,529 INFO L225 Difference]: With dead ends: 3030 [2024-10-31 15:03:34,529 INFO L226 Difference]: Without dead ends: 1737 [2024-10-31 15:03:34,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-31 15:03:34,532 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 376 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:34,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 752 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 15:03:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-10-31 15:03:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1663. [2024-10-31 15:03:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.362214199759326) internal successors, (2264), 1662 states have internal predecessors, (2264), 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) [2024-10-31 15:03:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2264 transitions. [2024-10-31 15:03:34,579 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2264 transitions. Word has length 196 [2024-10-31 15:03:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:34,580 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2264 transitions. [2024-10-31 15:03:34,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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) [2024-10-31 15:03:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2264 transitions. [2024-10-31 15:03:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-31 15:03:34,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:34,585 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:34,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 15:03:34,585 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:34,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash 228275513, now seen corresponding path program 1 times [2024-10-31 15:03:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727982918] [2024-10-31 15:03:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:34,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:34,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-31 15:03:34,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-31 15:03:34,716 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727982918] [2024-10-31 15:03:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1727982918] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:34,716 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137298516] [2024-10-31 15:03:34,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:34,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:34,718 INFO L87 Difference]: Start difference. First operand 1663 states and 2264 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-10-31 15:03:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:34,931 INFO L93 Difference]: Finished difference Result 3437 states and 4748 transitions. [2024-10-31 15:03:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 221 [2024-10-31 15:03:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:34,938 INFO L225 Difference]: With dead ends: 3437 [2024-10-31 15:03:34,938 INFO L226 Difference]: Without dead ends: 1831 [2024-10-31 15:03:34,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:34,942 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:34,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 248 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-10-31 15:03:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1831. [2024-10-31 15:03:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 1.3420765027322403) internal successors, (2456), 1830 states have internal predecessors, (2456), 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) [2024-10-31 15:03:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2456 transitions. [2024-10-31 15:03:34,996 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2456 transitions. Word has length 221 [2024-10-31 15:03:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:34,996 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2456 transitions. [2024-10-31 15:03:34,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-10-31 15:03:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2456 transitions. [2024-10-31 15:03:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-31 15:03:35,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:35,020 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:35,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 15:03:35,021 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:35,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 629263864, now seen corresponding path program 1 times [2024-10-31 15:03:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:35,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695603269] [2024-10-31 15:03:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:35,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:35,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-10-31 15:03:35,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-10-31 15:03:35,114 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695603269] [2024-10-31 15:03:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695603269] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:35,114 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623004226] [2024-10-31 15:03:35,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:35,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:35,116 INFO L87 Difference]: Start difference. First operand 1831 states and 2456 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-10-31 15:03:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:35,326 INFO L93 Difference]: Finished difference Result 3791 states and 5168 transitions. [2024-10-31 15:03:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 232 [2024-10-31 15:03:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:35,334 INFO L225 Difference]: With dead ends: 3791 [2024-10-31 15:03:35,334 INFO L226 Difference]: Without dead ends: 2017 [2024-10-31 15:03:35,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:35,338 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 84 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:35,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 261 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-10-31 15:03:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2024-10-31 15:03:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 1.3224206349206349) internal successors, (2666), 2016 states have internal predecessors, (2666), 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) [2024-10-31 15:03:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2666 transitions. [2024-10-31 15:03:35,390 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2666 transitions. Word has length 232 [2024-10-31 15:03:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:35,390 INFO L471 AbstractCegarLoop]: Abstraction has 2017 states and 2666 transitions. [2024-10-31 15:03:35,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-10-31 15:03:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2666 transitions. [2024-10-31 15:03:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-31 15:03:35,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:35,395 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:35,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 15:03:35,396 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:35,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -749493446, now seen corresponding path program 1 times [2024-10-31 15:03:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:35,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028762041] [2024-10-31 15:03:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:35,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:35,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-10-31 15:03:35,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-10-31 15:03:35,515 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028762041] [2024-10-31 15:03:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2028762041] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:35,515 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980852564] [2024-10-31 15:03:35,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:35,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:35,517 INFO L87 Difference]: Start difference. First operand 2017 states and 2666 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-10-31 15:03:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:35,737 INFO L93 Difference]: Finished difference Result 4199 states and 5642 transitions. [2024-10-31 15:03:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 262 [2024-10-31 15:03:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:35,745 INFO L225 Difference]: With dead ends: 4199 [2024-10-31 15:03:35,745 INFO L226 Difference]: Without dead ends: 2239 [2024-10-31 15:03:35,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:35,748 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 96 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:35,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 204 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2024-10-31 15:03:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2239. [2024-10-31 15:03:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2238 states have (on average 1.3011617515638962) internal successors, (2912), 2238 states have internal predecessors, (2912), 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) [2024-10-31 15:03:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2912 transitions. [2024-10-31 15:03:35,809 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2912 transitions. Word has length 262 [2024-10-31 15:03:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:35,809 INFO L471 AbstractCegarLoop]: Abstraction has 2239 states and 2912 transitions. [2024-10-31 15:03:35,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-10-31 15:03:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2912 transitions. [2024-10-31 15:03:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-31 15:03:35,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:35,818 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:35,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 15:03:35,818 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:35,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -120716101, now seen corresponding path program 1 times [2024-10-31 15:03:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536702298] [2024-10-31 15:03:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:35,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 15:03:35,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-10-31 15:03:35,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-10-31 15:03:35,992 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536702298] [2024-10-31 15:03:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [536702298] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:35,992 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72328058] [2024-10-31 15:03:35,992 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:35,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:35,994 INFO L87 Difference]: Start difference. First operand 2239 states and 2912 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-10-31 15:03:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:36,122 INFO L93 Difference]: Finished difference Result 8587 states and 11198 transitions. [2024-10-31 15:03:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 263 [2024-10-31 15:03:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:36,145 INFO L225 Difference]: With dead ends: 8587 [2024-10-31 15:03:36,145 INFO L226 Difference]: Without dead ends: 6405 [2024-10-31 15:03:36,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:36,150 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 246 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:36,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 894 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2024-10-31 15:03:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 6401. [2024-10-31 15:03:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6401 states, 6400 states have (on average 1.303125) internal successors, (8340), 6400 states have internal predecessors, (8340), 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) [2024-10-31 15:03:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8340 transitions. [2024-10-31 15:03:36,334 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8340 transitions. Word has length 263 [2024-10-31 15:03:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:36,334 INFO L471 AbstractCegarLoop]: Abstraction has 6401 states and 8340 transitions. [2024-10-31 15:03:36,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-10-31 15:03:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8340 transitions. [2024-10-31 15:03:36,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-10-31 15:03:36,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:36,346 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:36,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 15:03:36,347 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:36,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1096027025, now seen corresponding path program 1 times [2024-10-31 15:03:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466768383] [2024-10-31 15:03:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:36,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:36,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-10-31 15:03:36,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-10-31 15:03:36,489 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466768383] [2024-10-31 15:03:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [466768383] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:36,489 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204727565] [2024-10-31 15:03:36,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:36,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:36,491 INFO L87 Difference]: Start difference. First operand 6401 states and 8340 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-10-31 15:03:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:36,818 INFO L93 Difference]: Finished difference Result 12943 states and 16948 transitions. [2024-10-31 15:03:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 287 [2024-10-31 15:03:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:36,856 INFO L225 Difference]: With dead ends: 12943 [2024-10-31 15:03:36,856 INFO L226 Difference]: Without dead ends: 6599 [2024-10-31 15:03:36,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:36,866 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 91 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:36,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 250 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2024-10-31 15:03:37,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6599. [2024-10-31 15:03:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6599 states, 6598 states have (on average 1.2958472264322523) internal successors, (8550), 6598 states have internal predecessors, (8550), 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) [2024-10-31 15:03:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6599 states to 6599 states and 8550 transitions. [2024-10-31 15:03:37,086 INFO L78 Accepts]: Start accepts. Automaton has 6599 states and 8550 transitions. Word has length 287 [2024-10-31 15:03:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:37,087 INFO L471 AbstractCegarLoop]: Abstraction has 6599 states and 8550 transitions. [2024-10-31 15:03:37,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-10-31 15:03:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6599 states and 8550 transitions. [2024-10-31 15:03:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-10-31 15:03:37,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:37,099 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:37,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 15:03:37,099 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:37,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1966900500, now seen corresponding path program 1 times [2024-10-31 15:03:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:37,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085053748] [2024-10-31 15:03:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:37,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:37,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-31 15:03:37,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-31 15:03:37,215 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085053748] [2024-10-31 15:03:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1085053748] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:37,215 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346566956] [2024-10-31 15:03:37,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:37,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:37,217 INFO L87 Difference]: Start difference. First operand 6599 states and 8550 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:03:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:37,523 INFO L93 Difference]: Finished difference Result 13807 states and 18178 transitions. [2024-10-31 15:03:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:37,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2024-10-31 15:03:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:37,546 INFO L225 Difference]: With dead ends: 13807 [2024-10-31 15:03:37,546 INFO L226 Difference]: Without dead ends: 7265 [2024-10-31 15:03:37,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:37,554 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 92 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:37,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 201 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7265 states. [2024-10-31 15:03:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7265 to 7265. [2024-10-31 15:03:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7265 states, 7264 states have (on average 1.27863436123348) internal successors, (9288), 7264 states have internal predecessors, (9288), 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) [2024-10-31 15:03:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7265 states to 7265 states and 9288 transitions. [2024-10-31 15:03:37,752 INFO L78 Accepts]: Start accepts. Automaton has 7265 states and 9288 transitions. Word has length 299 [2024-10-31 15:03:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:37,752 INFO L471 AbstractCegarLoop]: Abstraction has 7265 states and 9288 transitions. [2024-10-31 15:03:37,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:03:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7265 states and 9288 transitions. [2024-10-31 15:03:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-10-31 15:03:37,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:37,765 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:37,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 15:03:37,766 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:37,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1281776100, now seen corresponding path program 1 times [2024-10-31 15:03:37,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:37,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842556432] [2024-10-31 15:03:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:37,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 15:03:37,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-10-31 15:03:37,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-10-31 15:03:37,946 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842556432] [2024-10-31 15:03:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [842556432] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:37,947 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336369989] [2024-10-31 15:03:37,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:37,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:37,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:37,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:37,948 INFO L87 Difference]: Start difference. First operand 7265 states and 9288 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-10-31 15:03:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:38,246 INFO L93 Difference]: Finished difference Result 15229 states and 19780 transitions. [2024-10-31 15:03:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:38,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 336 [2024-10-31 15:03:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:38,263 INFO L225 Difference]: With dead ends: 15229 [2024-10-31 15:03:38,263 INFO L226 Difference]: Without dead ends: 8021 [2024-10-31 15:03:38,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:38,273 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 94 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:38,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 248 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8021 states. [2024-10-31 15:03:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8021 to 8003. [2024-10-31 15:03:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8003 states, 8002 states have (on average 1.2619345163709073) internal successors, (10098), 8002 states have internal predecessors, (10098), 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) [2024-10-31 15:03:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8003 states to 8003 states and 10098 transitions. [2024-10-31 15:03:38,597 INFO L78 Accepts]: Start accepts. Automaton has 8003 states and 10098 transitions. Word has length 336 [2024-10-31 15:03:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:38,598 INFO L471 AbstractCegarLoop]: Abstraction has 8003 states and 10098 transitions. [2024-10-31 15:03:38,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-10-31 15:03:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 8003 states and 10098 transitions. [2024-10-31 15:03:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-10-31 15:03:38,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:38,620 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:38,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 15:03:38,621 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:38,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -321729676, now seen corresponding path program 1 times [2024-10-31 15:03:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020540442] [2024-10-31 15:03:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:38,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 15:03:38,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-10-31 15:03:38,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 905 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-10-31 15:03:38,871 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:38,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020540442] [2024-10-31 15:03:38,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2020540442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:03:38,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:03:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-31 15:03:38,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529710573] [2024-10-31 15:03:38,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:03:38,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 15:03:38,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 15:03:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 15:03:38,874 INFO L87 Difference]: Start difference. First operand 8003 states and 10098 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-10-31 15:03:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:39,569 INFO L93 Difference]: Finished difference Result 25507 states and 32263 transitions. [2024-10-31 15:03:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 15:03:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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 359 [2024-10-31 15:03:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:39,606 INFO L225 Difference]: With dead ends: 25507 [2024-10-31 15:03:39,606 INFO L226 Difference]: Without dead ends: 17561 [2024-10-31 15:03:39,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-31 15:03:39,620 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 379 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:39,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 771 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 15:03:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17561 states. [2024-10-31 15:03:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17561 to 10930. [2024-10-31 15:03:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10930 states, 10929 states have (on average 1.2780675267636563) internal successors, (13968), 10929 states have internal predecessors, (13968), 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) [2024-10-31 15:03:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10930 states to 10930 states and 13968 transitions. [2024-10-31 15:03:39,948 INFO L78 Accepts]: Start accepts. Automaton has 10930 states and 13968 transitions. Word has length 359 [2024-10-31 15:03:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:39,949 INFO L471 AbstractCegarLoop]: Abstraction has 10930 states and 13968 transitions. [2024-10-31 15:03:39,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-10-31 15:03:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 10930 states and 13968 transitions. [2024-10-31 15:03:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-10-31 15:03:39,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:39,969 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:39,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 15:03:39,970 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:39,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1433832451, now seen corresponding path program 1 times [2024-10-31 15:03:39,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:39,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419368704] [2024-10-31 15:03:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:40,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 15:03:40,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-10-31 15:03:40,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-10-31 15:03:40,496 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:40,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419368704] [2024-10-31 15:03:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1419368704] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:40,496 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 15:03:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602570820] [2024-10-31 15:03:40,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:40,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 15:03:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 15:03:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:40,498 INFO L87 Difference]: Start difference. First operand 10930 states and 13968 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-10-31 15:03:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:40,715 INFO L93 Difference]: Finished difference Result 27951 states and 35832 transitions. [2024-10-31 15:03:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 15:03:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 361 [2024-10-31 15:03:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:40,738 INFO L225 Difference]: With dead ends: 27951 [2024-10-31 15:03:40,738 INFO L226 Difference]: Without dead ends: 9802 [2024-10-31 15:03:40,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 15:03:40,808 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 83 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:40,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 394 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:03:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2024-10-31 15:03:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 8998. [2024-10-31 15:03:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8998 states, 8997 states have (on average 1.2640880293431143) internal successors, (11373), 8997 states have internal predecessors, (11373), 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) [2024-10-31 15:03:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 11373 transitions. [2024-10-31 15:03:41,128 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 11373 transitions. Word has length 361 [2024-10-31 15:03:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:41,129 INFO L471 AbstractCegarLoop]: Abstraction has 8998 states and 11373 transitions. [2024-10-31 15:03:41,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2024-10-31 15:03:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 11373 transitions. [2024-10-31 15:03:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-10-31 15:03:41,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:41,143 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 16, 14, 14, 12, 12, 10, 10, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:41,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 15:03:41,143 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:41,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -447859215, now seen corresponding path program 1 times [2024-10-31 15:03:41,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:41,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205045921] [2024-10-31 15:03:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:41,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 15:03:41,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2529 backedges. 1281 proven. 0 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2024-10-31 15:03:41,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2529 backedges. 1281 proven. 0 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2024-10-31 15:03:41,298 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:41,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205045921] [2024-10-31 15:03:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1205045921] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:03:41,299 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:03:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 15:03:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965853351] [2024-10-31 15:03:41,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:03:41,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 15:03:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 15:03:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:41,301 INFO L87 Difference]: Start difference. First operand 8998 states and 11373 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2024-10-31 15:03:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:41,589 INFO L93 Difference]: Finished difference Result 17624 states and 22507 transitions. [2024-10-31 15:03:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 15:03:41,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 471 [2024-10-31 15:03:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:41,606 INFO L225 Difference]: With dead ends: 17624 [2024-10-31 15:03:41,606 INFO L226 Difference]: Without dead ends: 7372 [2024-10-31 15:03:41,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 15:03:41,617 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 86 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:41,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 257 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:41,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2024-10-31 15:03:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 7372. [2024-10-31 15:03:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7372 states, 7371 states have (on average 1.2420295753629087) internal successors, (9155), 7371 states have internal predecessors, (9155), 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) [2024-10-31 15:03:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7372 states to 7372 states and 9155 transitions. [2024-10-31 15:03:41,812 INFO L78 Accepts]: Start accepts. Automaton has 7372 states and 9155 transitions. Word has length 471 [2024-10-31 15:03:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:41,813 INFO L471 AbstractCegarLoop]: Abstraction has 7372 states and 9155 transitions. [2024-10-31 15:03:41,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2024-10-31 15:03:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7372 states and 9155 transitions. [2024-10-31 15:03:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2024-10-31 15:03:41,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:41,823 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:41,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-31 15:03:41,824 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 384313247, now seen corresponding path program 1 times [2024-10-31 15:03:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234603729] [2024-10-31 15:03:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:41,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 15:03:41,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1653 proven. 14 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2024-10-31 15:03:41,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2915 backedges. 1653 proven. 14 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2024-10-31 15:03:42,062 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234603729] [2024-10-31 15:03:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [234603729] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:03:42,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:03:42,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-31 15:03:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155035094] [2024-10-31 15:03:42,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:03:42,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 15:03:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 15:03:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 15:03:42,065 INFO L87 Difference]: Start difference. First operand 7372 states and 9155 transitions. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 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) [2024-10-31 15:03:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:42,281 INFO L93 Difference]: Finished difference Result 7585 states and 9425 transitions. [2024-10-31 15:03:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 15:03:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 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 509 [2024-10-31 15:03:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:42,283 INFO L225 Difference]: With dead ends: 7585 [2024-10-31 15:03:42,283 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 15:03:42,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 15:03:42,287 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 95 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:42,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 256 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 15:03:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 15:03:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 15:03:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-31 15:03:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 15:03:42,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 509 [2024-10-31 15:03:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:42,289 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 15:03:42,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 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) [2024-10-31 15:03:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 15:03:42,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 15:03:42,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 15:03:42,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-31 15:03:42,295 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:03:42,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 15:03:49,183 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 15:03:49,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 03:03:49 BoogieIcfgContainer [2024-10-31 15:03:49,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 15:03:49,210 INFO L158 Benchmark]: Toolchain (without parser) took 21530.03ms. Allocated memory was 183.5MB in the beginning and 826.3MB in the end (delta: 642.8MB). Free memory was 149.1MB in the beginning and 499.1MB in the end (delta: -350.1MB). Peak memory consumption was 566.5MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,210 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 15:03:49,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.30ms. Allocated memory is still 183.5MB. Free memory was 149.1MB in the beginning and 131.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.10ms. Allocated memory is still 183.5MB. Free memory was 131.2MB in the beginning and 128.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,211 INFO L158 Benchmark]: Boogie Preprocessor took 76.88ms. Allocated memory is still 183.5MB. Free memory was 128.6MB in the beginning and 126.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,211 INFO L158 Benchmark]: RCFGBuilder took 729.65ms. Allocated memory is still 183.5MB. Free memory was 125.5MB in the beginning and 89.3MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,211 INFO L158 Benchmark]: TraceAbstraction took 20255.07ms. Allocated memory was 183.5MB in the beginning and 826.3MB in the end (delta: 642.8MB). Free memory was 88.8MB in the beginning and 499.1MB in the end (delta: -410.3MB). Peak memory consumption was 506.7MB. Max. memory is 8.0GB. [2024-10-31 15:03:49,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 403.30ms. Allocated memory is still 183.5MB. Free memory was 149.1MB in the beginning and 131.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.10ms. Allocated memory is still 183.5MB. Free memory was 131.2MB in the beginning and 128.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.88ms. Allocated memory is still 183.5MB. Free memory was 128.6MB in the beginning and 126.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 729.65ms. Allocated memory is still 183.5MB. Free memory was 125.5MB in the beginning and 89.3MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 20255.07ms. Allocated memory was 183.5MB in the beginning and 826.3MB in the end (delta: 642.8MB). Free memory was 88.8MB in the beginning and 499.1MB in the end (delta: -410.3MB). Peak memory consumption was 506.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 618]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 24, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2649 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2649 mSDsluCounter, 8610 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4244 mSDsCounter, 550 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3947 IncrementalHoareTripleChecker+Invalid, 4497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 550 mSolverCounterUnsat, 4366 mSDtfsCounter, 3947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9784 GetRequests, 9728 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10930occurred in iteration=21, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 7531 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 4907 NumberOfCodeBlocks, 4907 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 9766 ConstructedInterpolants, 0 QuantifiedInterpolants, 13155 SizeOfPredicates, 19 NumberOfNonLiveVariables, 5962 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 48 InterpolantComputations, 42 PerfectInterpolantSequences, 36614/36718 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (65535 == ag_X)) && (3 == s__state)) && (4368 != s__s3__tmp__next_state___0)) && (3 != blastFlag)) || (((((((4448 == s__state) && (61087 == ag_Y)) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (3 != blastFlag))) || ((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (4384 == s__state)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4368 != s__s3__tmp__next_state___0)) && (3 != blastFlag))) || (((((((4432 == s__state) && (61087 == ag_Y)) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (3 != blastFlag))) || (((2 == blastFlag) && (3 == s__state)) && (4368 != s__s3__tmp__next_state___0))) || ((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (4400 == s__state)) && (65535 == ag_X)) && (0 == s__hit)) && (4368 != s__s3__tmp__next_state___0)) && (3 != blastFlag))) || (((2 == blastFlag) && (4352 == s__state)) && (3 == s__s3__tmp__next_state___0))) || (((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (0 == s__hit)) && (4416 == s__state))) || ((4384 == s__state) && (1 == blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (4560 == s__state)) && (65535 == ag_X)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (3 != blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4464 == s__state)) && (3 != blastFlag))) || ((0 == blastFlag) && (12292 == s__state))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (65535 == ag_X)) && (4560 == s__s3__tmp__next_state___0)) && (0 == s__hit)) && (4352 == s__state)) && (3 != blastFlag))) || ((4560 == s__state) && (2 == blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (4528 == s__state)) && (0 == s__hit)) && (3 != blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (4512 == s__state)) && (0 == s__hit)) && (3 != blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4480 == s__state)) && (3 != blastFlag))) || (((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (0 == s__hit)) && (4496 == s__state)) && (3 != blastFlag))) || ((4512 == s__state) && (2 == blastFlag))) || ((4528 == s__state) && (2 == blastFlag))) || ((((((((((((((61087 == ag_Y) && (256 == s__s3__tmp__new_cipher__algorithms)) && (5 != blastFlag)) && (65535 == ag_X)) && (16384 != s__state)) && (4560 == s__s3__tmp__next_state___0)) && (4368 != s__state)) && (4099 != s__state)) && (4096 != s__state)) && (0 == s__hit)) && (12292 != s__state)) && (20480 != s__state)) && (4369 != s__state)) && (3 != blastFlag))) || ((4368 == s__state) && (0 == blastFlag))) || ((2 == blastFlag) && (0 == s__hit))) RESULT: Ultimate proved your program to be correct! [2024-10-31 15:03:49,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...