/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/jain_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 15:02:51,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 15:02:51,671 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 15:02:51,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 15:02:51,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 15:02:51,709 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 15:02:51,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 15:02:51,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 15:02:51,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 15:02:51,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 15:02:51,711 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 15:02:51,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 15:02:51,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 15:02:51,714 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 15:02:51,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 15:02:51,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 15:02:51,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 15:02:51,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 15:02:51,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 15:02:51,716 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 15:02:51,717 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 15:02:51,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 15:02:51,718 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 15:02:51,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 15:02:51,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 15:02:51,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 15:02:51,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 15:02:51,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 15:02:51,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 15:02:51,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 15:02:51,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:02:51,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 15:02:51,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 15:02:51,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 15:02:51,725 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 15:02:51,726 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 15:02:51,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 15:02:51,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 15:02:51,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 15:02:51,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 15:02:51,739 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 15:02:51,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-10-31 15:02:52,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 15:02:52,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 15:02:52,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 15:02:52,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 15:02:52,073 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 15:02:52,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_5-2.c [2024-10-31 15:02:53,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 15:02:53,703 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 15:02:53,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_5-2.c [2024-10-31 15:02:53,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6f8b1b3/553dced9dc32437fbd6f56add7abcbb1/FLAG128ca2603 [2024-10-31 15:02:53,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6f8b1b3/553dced9dc32437fbd6f56add7abcbb1 [2024-10-31 15:02:53,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 15:02:53,721 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 15:02:53,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 15:02:53,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 15:02:53,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 15:02:53,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4995a57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53, skipping insertion in model container [2024-10-31 15:02:53,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 15:02:53,904 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/jain_5-2.c[665,678] [2024-10-31 15:02:53,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:02:53,926 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 15:02:53,938 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/jain_5-2.c[665,678] [2024-10-31 15:02:53,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:02:53,956 INFO L204 MainTranslator]: Completed translation [2024-10-31 15:02:53,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53 WrapperNode [2024-10-31 15:02:53,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 15:02:53,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 15:02:53,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 15:02:53,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 15:02:53,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,983 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-10-31 15:02:53,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 15:02:53,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 15:02:53,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 15:02:53,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 15:02:53,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:53,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,004 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 15:02:54,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 15:02:54,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 15:02:54,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 15:02:54,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 15:02:54,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (1/1) ... [2024-10-31 15:02:54,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:02:54,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 15:02:54,049 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 15:02:54,055 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 15:02:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 15:02:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 15:02:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 15:02:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 15:02:54,144 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 15:02:54,146 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 15:02:54,260 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 15:02:54,260 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 15:02:54,271 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 15:02:54,273 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 15:02:54,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:02:54 BoogieIcfgContainer [2024-10-31 15:02:54,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 15:02:54,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 15:02:54,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 15:02:54,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 15:02:54,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 03:02:53" (1/3) ... [2024-10-31 15:02:54,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:02:54, skipping insertion in model container [2024-10-31 15:02:54,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:02:53" (2/3) ... [2024-10-31 15:02:54,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bff57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:02:54, skipping insertion in model container [2024-10-31 15:02:54,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:02:54" (3/3) ... [2024-10-31 15:02:54,282 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_5-2.c [2024-10-31 15:02:54,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 15:02:54,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 15:02:54,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 15:02:54,369 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;@63b6d258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 15:02:54,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 15:02:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 15:02:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 15:02:54,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:02:54,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 15:02:54,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:02:54,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:02:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2024-10-31 15:02:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:02:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835436448] [2024-10-31 15:02:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:02:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:02:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:02:54,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 15:02:54,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:02:54,707 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 15:02:54,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:02:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:02:54,778 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:02:54,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835436448] [2024-10-31 15:02:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [835436448] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:02:54,780 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:02:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-10-31 15:02:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419976481] [2024-10-31 15:02:54,783 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:02:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 15:02:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:02:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 15:02:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 15:02:54,811 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:02:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:02:54,871 INFO L93 Difference]: Finished difference Result 21 states and 32 transitions. [2024-10-31 15:02:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 15:02:54,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-31 15:02:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:02:54,884 INFO L225 Difference]: With dead ends: 21 [2024-10-31 15:02:54,884 INFO L226 Difference]: Without dead ends: 12 [2024-10-31 15:02:54,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-31 15:02:54,889 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 15:02:54,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:02:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-31 15:02:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-31 15:02:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:02:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-10-31 15:02:54,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2024-10-31 15:02:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:02:54,919 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-10-31 15:02:54,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:02:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-10-31 15:02:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 15:02:54,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:02:54,919 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-31 15:02:54,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 15:02:54,920 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:02:54,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:02:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1534070422, now seen corresponding path program 1 times [2024-10-31 15:02:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:02:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357524004] [2024-10-31 15:02:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:02:54,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:02:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:02:55,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 15:02:55,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:02:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:02:55,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:02:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:02:55,442 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:02:55,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357524004] [2024-10-31 15:02:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1357524004] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:02:55,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:02:55,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-31 15:02:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485995275] [2024-10-31 15:02:55,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:02:55,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 15:02:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:02:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 15:02:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-31 15:02:55,449 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:02:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:02:56,080 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-10-31 15:02:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 15:02:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-31 15:02:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:02:56,082 INFO L225 Difference]: With dead ends: 26 [2024-10-31 15:02:56,082 INFO L226 Difference]: Without dead ends: 24 [2024-10-31 15:02:56,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-10-31 15:02:56,084 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 15:02:56,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 15:02:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-31 15:02:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-31 15:02:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 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 15:02:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-10-31 15:02:56,092 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2024-10-31 15:02:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:02:56,093 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-10-31 15:02:56,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:02:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-10-31 15:02:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-31 15:02:56,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:02:56,094 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2024-10-31 15:02:56,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 15:02:56,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:02:56,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:02:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1980545898, now seen corresponding path program 2 times [2024-10-31 15:02:56,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:02:56,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93758688] [2024-10-31 15:02:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:02:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:02:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:02:56,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 15:02:56,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:02:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:02:56,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:02:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:02:57,165 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:02:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93758688] [2024-10-31 15:02:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [93758688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:02:57,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:02:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-10-31 15:02:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734001486] [2024-10-31 15:02:57,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:02:57,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 15:02:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:02:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 15:02:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2024-10-31 15:02:57,169 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 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 15:02:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:02:59,874 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-10-31 15:02:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-31 15:02:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 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 23 [2024-10-31 15:02:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:02:59,876 INFO L225 Difference]: With dead ends: 50 [2024-10-31 15:02:59,876 INFO L226 Difference]: Without dead ends: 48 [2024-10-31 15:02:59,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-10-31 15:02:59,878 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:02:59,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 15:02:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-31 15:02:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-31 15:02:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 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 15:02:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2024-10-31 15:02:59,895 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 23 [2024-10-31 15:02:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:02:59,896 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2024-10-31 15:02:59,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 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 15:02:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2024-10-31 15:02:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-31 15:02:59,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:02:59,898 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1] [2024-10-31 15:02:59,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 15:02:59,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:02:59,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:02:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1964421270, now seen corresponding path program 3 times [2024-10-31 15:02:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:02:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254320041] [2024-10-31 15:02:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:02:59,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:00,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-31 15:03:00,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:00,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:02,473 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254320041] [2024-10-31 15:03:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1254320041] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:03:02,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:03:02,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2024-10-31 15:03:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766688153] [2024-10-31 15:03:02,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:03:02,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-31 15:03:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-31 15:03:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2024-10-31 15:03:02,477 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 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 15:03:06,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-31 15:03:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:03:13,593 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2024-10-31 15:03:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-31 15:03:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 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 47 [2024-10-31 15:03:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:03:13,594 INFO L225 Difference]: With dead ends: 98 [2024-10-31 15:03:13,595 INFO L226 Difference]: Without dead ends: 96 [2024-10-31 15:03:13,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1851, Invalid=4155, Unknown=0, NotChecked=0, Total=6006 [2024-10-31 15:03:13,597 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-31 15:03:13,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 282 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-31 15:03:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-31 15:03:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-31 15:03:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 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 15:03:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2024-10-31 15:03:13,620 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 47 [2024-10-31 15:03:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:03:13,620 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2024-10-31 15:03:13,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 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 15:03:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2024-10-31 15:03:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-31 15:03:13,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:03:13,623 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1] [2024-10-31 15:03:13,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 15:03:13,623 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:03:13,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:03:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1305577622, now seen corresponding path program 4 times [2024-10-31 15:03:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:03:13,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850769275] [2024-10-31 15:03:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:03:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:03:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:03:14,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-10-31 15:03:14,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:03:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:15,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:03:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:03:21,118 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:03:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850769275] [2024-10-31 15:03:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [850769275] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:03:21,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:03:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2024-10-31 15:03:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997236088] [2024-10-31 15:03:21,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:03:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-31 15:03:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:03:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-31 15:03:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=3394, Unknown=0, NotChecked=0, Total=4556 [2024-10-31 15:03:21,123 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 68 states, 68 states have (on average 2.764705882352941) internal successors, (188), 68 states have internal predecessors, (188), 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 15:03:31,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []