/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_srvr_2a.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 19:56:01,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 19:56:01,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 19:56:01,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 19:56:01,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 19:56:01,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 19:56:01,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 19:56:01,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 19:56:01,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 19:56:01,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 19:56:01,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 19:56:01,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 19:56:01,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 19:56:01,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 19:56:01,479 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 19:56:01,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 19:56:01,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 19:56:01,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 19:56:01,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 19:56:01,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 19:56:01,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 19:56:01,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 19:56:01,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 19:56:01,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 19:56:01,486 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 19:56:01,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 19:56:01,487 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 19:56:01,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 19:56:01,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 19:56:01,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 19:56:01,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 19:56:01,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 19:56:01,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 19:56:01,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 19:56:01,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 19:56:01,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 19:56:01,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 19:56:01,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 19:56:01,490 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 19:56:01,490 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 19:56:01,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 19:56:01,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 19:56:01,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 19:56:01,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 19:56:01,491 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-02 19:56:01,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 19:56:01,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 19:56:01,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 19:56:01,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 19:56:01,758 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 19:56:01,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c [2024-11-02 19:56:03,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 19:56:03,336 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 19:56:03,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c [2024-11-02 19:56:03,358 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed23feb64/6c375f859a134287be4a6bd984cabbb6/FLAG037a34e2d [2024-11-02 19:56:03,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed23feb64/6c375f859a134287be4a6bd984cabbb6 [2024-11-02 19:56:03,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 19:56:03,377 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 19:56:03,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 19:56:03,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 19:56:03,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 19:56:03,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aaa7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03, skipping insertion in model container [2024-11-02 19:56:03,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 19:56:03,679 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c[44872,44885] [2024-11-02 19:56:03,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 19:56:03,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 19:56:03,757 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a.BV.c.cil.c[44872,44885] [2024-11-02 19:56:03,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 19:56:03,776 INFO L204 MainTranslator]: Completed translation [2024-11-02 19:56:03,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03 WrapperNode [2024-11-02 19:56:03,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 19:56:03,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 19:56:03,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 19:56:03,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 19:56:03,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,832 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 525 [2024-11-02 19:56:03,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 19:56:03,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 19:56:03,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 19:56:03,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 19:56:03,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,874 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 19:56:03,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 19:56:03,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 19:56:03,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 19:56:03,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 19:56:03,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (1/1) ... [2024-11-02 19:56:03,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 19:56:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 19:56:03,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-02 19:56:03,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-02 19:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 19:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 19:56:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 19:56:03,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 19:56:04,041 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 19:56:04,043 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 19:56:04,059 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 19:56:04,606 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2024-11-02 19:56:04,606 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2024-11-02 19:56:04,649 INFO L? ?]: Removed 118 outVars from TransFormulas that were not future-live. [2024-11-02 19:56:04,650 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 19:56:04,665 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 19:56:04,665 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 19:56:04,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:04 BoogieIcfgContainer [2024-11-02 19:56:04,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 19:56:04,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 19:56:04,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 19:56:04,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 19:56:04,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:56:03" (1/3) ... [2024-11-02 19:56:04,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3ae40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:04, skipping insertion in model container [2024-11-02 19:56:04,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:03" (2/3) ... [2024-11-02 19:56:04,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3ae40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:04, skipping insertion in model container [2024-11-02 19:56:04,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:04" (3/3) ... [2024-11-02 19:56:04,673 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a.BV.c.cil.c [2024-11-02 19:56:04,688 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 19:56:04,688 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 19:56:04,737 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 19:56:04,744 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;@24ae6f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 19:56:04,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 19:56:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 19:56:04,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:04,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:04,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:04,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1632002022, now seen corresponding path program 1 times [2024-11-02 19:56:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497012070] [2024-11-02 19:56:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:04,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:04,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 19:56:04,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 19:56:05,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 19:56:05,126 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497012070] [2024-11-02 19:56:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [497012070] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:05,127 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:05,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:56:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965996284] [2024-11-02 19:56:05,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:05,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:05,165 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 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 14.666666666666666) internal successors, (44), 3 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) [2024-11-02 19:56:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:05,376 INFO L93 Difference]: Finished difference Result 275 states and 473 transitions. [2024-11-02 19:56:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:05,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 44 [2024-11-02 19:56:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:05,387 INFO L225 Difference]: With dead ends: 275 [2024-11-02 19:56:05,387 INFO L226 Difference]: Without dead ends: 125 [2024-11-02 19:56:05,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:05,393 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:05,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 325 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:56:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-02 19:56:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-02 19:56:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4919354838709677) internal successors, (185), 124 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2024-11-02 19:56:05,430 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 44 [2024-11-02 19:56:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:05,431 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2024-11-02 19:56:05,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2024-11-02 19:56:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2024-11-02 19:56:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 19:56:05,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:05,434 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-02 19:56:05,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 19:56:05,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:05,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2033157093, now seen corresponding path program 1 times [2024-11-02 19:56:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:05,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200015500] [2024-11-02 19:56:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:05,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 19:56:05,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 19:56:05,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 19:56:05,787 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200015500] [2024-11-02 19:56:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [200015500] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:05,788 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 19:56:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101611960] [2024-11-02 19:56:05,788 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:05,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:56:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:56:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:05,792 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:05,884 INFO L93 Difference]: Finished difference Result 432 states and 659 transitions. [2024-11-02 19:56:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:56:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 60 [2024-11-02 19:56:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:05,892 INFO L225 Difference]: With dead ends: 432 [2024-11-02 19:56:05,892 INFO L226 Difference]: Without dead ends: 326 [2024-11-02 19:56:05,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:05,894 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 346 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:05,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 487 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-02 19:56:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2024-11-02 19:56:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.5138461538461538) internal successors, (492), 325 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 492 transitions. [2024-11-02 19:56:05,931 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 492 transitions. Word has length 60 [2024-11-02 19:56:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:05,931 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 492 transitions. [2024-11-02 19:56:05,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 492 transitions. [2024-11-02 19:56:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-02 19:56:05,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:05,936 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:05,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 19:56:05,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:05,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1976048908, now seen corresponding path program 1 times [2024-11-02 19:56:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805600019] [2024-11-02 19:56:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:06,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:56:06,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 19:56:06,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 19:56:06,099 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:06,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805600019] [2024-11-02 19:56:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [805600019] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:06,099 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:56:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000046889] [2024-11-02 19:56:06,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:06,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:06,104 INFO L87 Difference]: Start difference. First operand 326 states and 492 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:06,133 INFO L93 Difference]: Finished difference Result 635 states and 964 transitions. [2024-11-02 19:56:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 82 [2024-11-02 19:56:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:06,136 INFO L225 Difference]: With dead ends: 635 [2024-11-02 19:56:06,136 INFO L226 Difference]: Without dead ends: 328 [2024-11-02 19:56:06,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:06,141 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:06,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 326 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-02 19:56:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-11-02 19:56:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.510703363914373) internal successors, (494), 327 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 494 transitions. [2024-11-02 19:56:06,172 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 494 transitions. Word has length 82 [2024-11-02 19:56:06,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:06,173 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 494 transitions. [2024-11-02 19:56:06,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 494 transitions. [2024-11-02 19:56:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-02 19:56:06,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:06,177 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:06,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 19:56:06,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:06,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1614320406, now seen corresponding path program 1 times [2024-11-02 19:56:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:06,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978014254] [2024-11-02 19:56:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:06,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:56:06,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 19:56:06,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 19:56:06,385 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:06,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978014254] [2024-11-02 19:56:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [978014254] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-02 19:56:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942201278] [2024-11-02 19:56:06,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:06,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:06,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:06,389 INFO L87 Difference]: Start difference. First operand 328 states and 494 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2024-11-02 19:56:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:06,586 INFO L93 Difference]: Finished difference Result 760 states and 1181 transitions. [2024-11-02 19:56:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 103 [2024-11-02 19:56:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:06,590 INFO L225 Difference]: With dead ends: 760 [2024-11-02 19:56:06,590 INFO L226 Difference]: Without dead ends: 453 [2024-11-02 19:56:06,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:06,596 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 29 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:06,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 272 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:56:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-02 19:56:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-02 19:56:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.4026548672566372) internal successors, (634), 452 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 634 transitions. [2024-11-02 19:56:06,615 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 634 transitions. Word has length 103 [2024-11-02 19:56:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:06,615 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 634 transitions. [2024-11-02 19:56:06,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2024-11-02 19:56:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 634 transitions. [2024-11-02 19:56:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-02 19:56:06,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:06,622 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:06,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 19:56:06,626 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:06,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1420566810, now seen corresponding path program 1 times [2024-11-02 19:56:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339824676] [2024-11-02 19:56:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:06,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:56:06,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 19:56:06,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 19:56:06,816 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339824676] [2024-11-02 19:56:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1339824676] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:06,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:06,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-02 19:56:06,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166626984] [2024-11-02 19:56:06,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:06,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:06,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:06,818 INFO L87 Difference]: Start difference. First operand 453 states and 634 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2024-11-02 19:56:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:06,959 INFO L93 Difference]: Finished difference Result 931 states and 1317 transitions. [2024-11-02 19:56:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 103 [2024-11-02 19:56:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:06,962 INFO L225 Difference]: With dead ends: 931 [2024-11-02 19:56:06,962 INFO L226 Difference]: Without dead ends: 499 [2024-11-02 19:56:06,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:06,964 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 11 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:06,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 273 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-02 19:56:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2024-11-02 19:56:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3855421686746987) internal successors, (690), 498 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 690 transitions. [2024-11-02 19:56:06,977 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 690 transitions. Word has length 103 [2024-11-02 19:56:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:06,977 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 690 transitions. [2024-11-02 19:56:06,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2024-11-02 19:56:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 690 transitions. [2024-11-02 19:56:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-02 19:56:06,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:06,980 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 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] [2024-11-02 19:56:06,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 19:56:06,980 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:06,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1506722242, now seen corresponding path program 1 times [2024-11-02 19:56:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606876421] [2024-11-02 19:56:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:07,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:56:07,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-02 19:56:07,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-02 19:56:07,178 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:07,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606876421] [2024-11-02 19:56:07,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1606876421] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:07,179 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:07,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 19:56:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787107972] [2024-11-02 19:56:07,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:07,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:56:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:56:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:07,181 INFO L87 Difference]: Start difference. First operand 499 states and 690 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:07,226 INFO L93 Difference]: Finished difference Result 1286 states and 1790 transitions. [2024-11-02 19:56:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:56:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 143 [2024-11-02 19:56:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:07,231 INFO L225 Difference]: With dead ends: 1286 [2024-11-02 19:56:07,231 INFO L226 Difference]: Without dead ends: 808 [2024-11-02 19:56:07,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:07,235 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 268 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:07,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 620 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-02 19:56:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-02 19:56:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.3866171003717471) internal successors, (1119), 807 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1119 transitions. [2024-11-02 19:56:07,255 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1119 transitions. Word has length 143 [2024-11-02 19:56:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:07,255 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1119 transitions. [2024-11-02 19:56:07,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1119 transitions. [2024-11-02 19:56:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-02 19:56:07,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:07,259 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:07,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 19:56:07,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:07,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 778746127, now seen corresponding path program 1 times [2024-11-02 19:56:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038194061] [2024-11-02 19:56:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:07,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:56:07,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-02 19:56:07,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-02 19:56:07,518 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038194061] [2024-11-02 19:56:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038194061] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:07,518 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:56:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144852101] [2024-11-02 19:56:07,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:07,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:07,520 INFO L87 Difference]: Start difference. First operand 808 states and 1119 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:07,552 INFO L93 Difference]: Finished difference Result 2217 states and 3117 transitions. [2024-11-02 19:56:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:07,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 163 [2024-11-02 19:56:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:07,560 INFO L225 Difference]: With dead ends: 2217 [2024-11-02 19:56:07,560 INFO L226 Difference]: Without dead ends: 1430 [2024-11-02 19:56:07,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:56:07,563 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 110 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 491 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 [2024-11-02 19:56:07,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 491 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-02 19:56:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1428. [2024-11-02 19:56:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.4085494043447793) internal successors, (2010), 1427 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2010 transitions. [2024-11-02 19:56:07,595 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2010 transitions. Word has length 163 [2024-11-02 19:56:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:07,596 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 2010 transitions. [2024-11-02 19:56:07,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2010 transitions. [2024-11-02 19:56:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-02 19:56:07,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:07,599 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:07,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 19:56:07,600 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:07,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1067369758, now seen corresponding path program 1 times [2024-11-02 19:56:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463879279] [2024-11-02 19:56:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:07,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:56:07,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-02 19:56:07,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 192 proven. 33 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-02 19:56:07,734 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463879279] [2024-11-02 19:56:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [463879279] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-02 19:56:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788970527] [2024-11-02 19:56:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:07,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:07,737 INFO L87 Difference]: Start difference. First operand 1428 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2024-11-02 19:56:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:07,913 INFO L93 Difference]: Finished difference Result 3171 states and 4595 transitions. [2024-11-02 19:56:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:07,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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 183 [2024-11-02 19:56:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:07,920 INFO L225 Difference]: With dead ends: 3171 [2024-11-02 19:56:07,921 INFO L226 Difference]: Without dead ends: 1764 [2024-11-02 19:56:07,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:56:07,924 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:07,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 271 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:56:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2024-11-02 19:56:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2024-11-02 19:56:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1763 states have (on average 1.3533749290981283) internal successors, (2386), 1763 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2386 transitions. [2024-11-02 19:56:07,986 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2386 transitions. Word has length 183 [2024-11-02 19:56:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:07,986 INFO L471 AbstractCegarLoop]: Abstraction has 1764 states and 2386 transitions. [2024-11-02 19:56:07,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2024-11-02 19:56:07,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2386 transitions. [2024-11-02 19:56:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-02 19:56:07,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:07,991 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:56:07,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 19:56:07,992 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:07,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash -860101462, now seen corresponding path program 1 times [2024-11-02 19:56:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:07,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157728479] [2024-11-02 19:56:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:08,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 19:56:08,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:10,463 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_ssl3_accept_~ag_X~0#1| (_ BitVec 32)) (|ULTIMATE.start_ssl3_accept_~ag_Y~0#1| (_ BitVec 32))) (= |c_ULTIMATE.start_ssl3_accept_~s__state~0#1| (bvadd (bvmul (_ bv2 32) |ULTIMATE.start_ssl3_accept_~ag_X~0#1|) (bvmul (_ bv2 32) |ULTIMATE.start_ssl3_accept_~ag_Y~0#1|)))) is different from true [2024-11-02 19:56:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 294 proven. 0 refuted. 32 times theorem prover too weak. 92 trivial. 16 not checked. [2024-11-02 19:56:10,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-02 19:56:10,635 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157728479] [2024-11-02 19:56:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [157728479] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-02 19:56:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425061495] [2024-11-02 19:56:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:10,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2024-11-02 19:56:10,637 INFO L87 Difference]: Start difference. First operand 1764 states and 2386 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:10,781 INFO L93 Difference]: Finished difference Result 3717 states and 5077 transitions. [2024-11-02 19:56:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 225 [2024-11-02 19:56:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:10,789 INFO L225 Difference]: With dead ends: 3717 [2024-11-02 19:56:10,789 INFO L226 Difference]: Without dead ends: 1974 [2024-11-02 19:56:10,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2024-11-02 19:56:10,792 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:10,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 202 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-02 19:56:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1974. [2024-11-02 19:56:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.3715154586923466) internal successors, (2706), 1973 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2706 transitions. [2024-11-02 19:56:10,837 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2706 transitions. Word has length 225 [2024-11-02 19:56:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:10,837 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2706 transitions. [2024-11-02 19:56:10,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2706 transitions. [2024-11-02 19:56:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-02 19:56:10,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:10,843 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:56:10,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 19:56:10,843 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:10,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -222886975, now seen corresponding path program 1 times [2024-11-02 19:56:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303954214] [2024-11-02 19:56:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:10,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:56:10,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 303 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-02 19:56:10,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-02 19:56:11,002 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303954214] [2024-11-02 19:56:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303954214] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:11,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-02 19:56:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401585059] [2024-11-02 19:56:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:11,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:56:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:56:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:11,004 INFO L87 Difference]: Start difference. First operand 1974 states and 2706 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:11,146 INFO L93 Difference]: Finished difference Result 4147 states and 5737 transitions. [2024-11-02 19:56:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:56:11,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 226 [2024-11-02 19:56:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:11,155 INFO L225 Difference]: With dead ends: 4147 [2024-11-02 19:56:11,155 INFO L226 Difference]: Without dead ends: 2194 [2024-11-02 19:56:11,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:11,159 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:11,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 181 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2024-11-02 19:56:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2024-11-02 19:56:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.3889648882808938) internal successors, (3046), 2193 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3046 transitions. [2024-11-02 19:56:11,251 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3046 transitions. Word has length 226 [2024-11-02 19:56:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:11,251 INFO L471 AbstractCegarLoop]: Abstraction has 2194 states and 3046 transitions. [2024-11-02 19:56:11,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3046 transitions. [2024-11-02 19:56:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-02 19:56:11,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:11,256 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:56:11,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 19:56:11,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:11,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1252165159, now seen corresponding path program 1 times [2024-11-02 19:56:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:11,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243400514] [2024-11-02 19:56:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:11,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 19:56:11,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-02 19:56:11,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-02 19:56:11,397 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:11,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243400514] [2024-11-02 19:56:11,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [243400514] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:11,398 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:11,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 19:56:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318450932] [2024-11-02 19:56:11,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:11,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:56:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:56:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:11,399 INFO L87 Difference]: Start difference. First operand 2194 states and 3046 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:11,607 INFO L93 Difference]: Finished difference Result 4677 states and 6577 transitions. [2024-11-02 19:56:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:56:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 241 [2024-11-02 19:56:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:11,617 INFO L225 Difference]: With dead ends: 4677 [2024-11-02 19:56:11,617 INFO L226 Difference]: Without dead ends: 2504 [2024-11-02 19:56:11,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:56:11,621 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 69 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:11,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 231 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:56:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2024-11-02 19:56:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2504. [2024-11-02 19:56:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.3567718737514982) internal successors, (3396), 2503 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3396 transitions. [2024-11-02 19:56:11,681 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3396 transitions. Word has length 241 [2024-11-02 19:56:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:11,682 INFO L471 AbstractCegarLoop]: Abstraction has 2504 states and 3396 transitions. [2024-11-02 19:56:11,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3396 transitions. [2024-11-02 19:56:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-02 19:56:11,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:11,687 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:56:11,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 19:56:11,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:11,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash -482554043, now seen corresponding path program 1 times [2024-11-02 19:56:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:11,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172820325] [2024-11-02 19:56:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:11,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:11,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 19:56:11,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 425 proven. 64 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-02 19:56:12,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 430 proven. 16 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-02 19:56:13,061 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172820325] [2024-11-02 19:56:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1172820325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:56:13,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:56:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2024-11-02 19:56:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192339800] [2024-11-02 19:56:13,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:56:13,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 19:56:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 19:56:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-02 19:56:13,063 INFO L87 Difference]: Start difference. First operand 2504 states and 3396 transitions. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:17,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:21,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:26,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:28,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:30,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:33,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:37,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:40,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:43,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:46,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:49,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:52,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:55,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:56:59,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:01,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:06,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:09,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:12,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:15,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:18,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:22,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:24,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:27,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:30,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 19:57:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:30,802 INFO L93 Difference]: Finished difference Result 8339 states and 11804 transitions. [2024-11-02 19:57:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 19:57:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 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 253 [2024-11-02 19:57:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:30,823 INFO L225 Difference]: With dead ends: 8339 [2024-11-02 19:57:30,823 INFO L226 Difference]: Without dead ends: 5838 [2024-11-02 19:57:30,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-02 19:57:30,828 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 464 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 75 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.3s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:30,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1012 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1104 Invalid, 21 Unknown, 0 Unchecked, 77.3s Time] [2024-11-02 19:57:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2024-11-02 19:57:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 4929. [2024-11-02 19:57:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4928 states have (on average 1.3601866883116882) internal successors, (6703), 4928 states have internal predecessors, (6703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 6703 transitions. [2024-11-02 19:57:30,959 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 6703 transitions. Word has length 253 [2024-11-02 19:57:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:30,959 INFO L471 AbstractCegarLoop]: Abstraction has 4929 states and 6703 transitions. [2024-11-02 19:57:30,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 6703 transitions. [2024-11-02 19:57:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-02 19:57:30,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:30,968 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-02 19:57:30,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 19:57:30,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -726629683, now seen corresponding path program 1 times [2024-11-02 19:57:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075720032] [2024-11-02 19:57:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:31,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:31,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-02 19:57:31,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-02 19:57:31,072 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075720032] [2024-11-02 19:57:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075720032] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:31,072 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:31,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692577117] [2024-11-02 19:57:31,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:31,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:31,075 INFO L87 Difference]: Start difference. First operand 4929 states and 6703 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:31,277 INFO L93 Difference]: Finished difference Result 10287 states and 14011 transitions. [2024-11-02 19:57:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 254 [2024-11-02 19:57:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:31,294 INFO L225 Difference]: With dead ends: 10287 [2024-11-02 19:57:31,295 INFO L226 Difference]: Without dead ends: 5379 [2024-11-02 19:57:31,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:31,301 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 9 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:31,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 272 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5379 states. [2024-11-02 19:57:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5379 to 5379. [2024-11-02 19:57:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.3467831907772405) internal successors, (7243), 5378 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7243 transitions. [2024-11-02 19:57:31,432 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7243 transitions. Word has length 254 [2024-11-02 19:57:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:31,432 INFO L471 AbstractCegarLoop]: Abstraction has 5379 states and 7243 transitions. [2024-11-02 19:57:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7243 transitions. [2024-11-02 19:57:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-02 19:57:31,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:31,443 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:31,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 19:57:31,443 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:31,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1268706312, now seen corresponding path program 1 times [2024-11-02 19:57:31,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:31,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267608857] [2024-11-02 19:57:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:31,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:31,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:31,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-02 19:57:31,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-02 19:57:31,565 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:31,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267608857] [2024-11-02 19:57:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1267608857] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:31,565 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130461653] [2024-11-02 19:57:31,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:31,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:31,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:31,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:31,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:31,567 INFO L87 Difference]: Start difference. First operand 5379 states and 7243 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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) [2024-11-02 19:57:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:31,792 INFO L93 Difference]: Finished difference Result 11223 states and 15145 transitions. [2024-11-02 19:57:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:31,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 300 [2024-11-02 19:57:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:31,812 INFO L225 Difference]: With dead ends: 11223 [2024-11-02 19:57:31,812 INFO L226 Difference]: Without dead ends: 5865 [2024-11-02 19:57:31,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:31,817 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 9 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:31,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 272 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2024-11-02 19:57:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 5865. [2024-11-02 19:57:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 5864 states have (on average 1.3333901773533425) internal successors, (7819), 5864 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 7819 transitions. [2024-11-02 19:57:31,934 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 7819 transitions. Word has length 300 [2024-11-02 19:57:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:31,935 INFO L471 AbstractCegarLoop]: Abstraction has 5865 states and 7819 transitions. [2024-11-02 19:57:31,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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) [2024-11-02 19:57:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 7819 transitions. [2024-11-02 19:57:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-02 19:57:31,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:31,945 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-11-02 19:57:31,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 19:57:31,945 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1812513324, now seen corresponding path program 1 times [2024-11-02 19:57:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17843248] [2024-11-02 19:57:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:31,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:57:31,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-02 19:57:32,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2024-11-02 19:57:32,053 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:32,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17843248] [2024-11-02 19:57:32,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [17843248] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:32,053 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:32,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 19:57:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6031717] [2024-11-02 19:57:32,054 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:32,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:57:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:57:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:57:32,055 INFO L87 Difference]: Start difference. First operand 5865 states and 7819 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:32,291 INFO L93 Difference]: Finished difference Result 9538 states and 12831 transitions. [2024-11-02 19:57:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:57:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 307 [2024-11-02 19:57:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:32,302 INFO L225 Difference]: With dead ends: 9538 [2024-11-02 19:57:32,302 INFO L226 Difference]: Without dead ends: 2446 [2024-11-02 19:57:32,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:57:32,310 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 81 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:32,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 281 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:57:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2024-11-02 19:57:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2344. [2024-11-02 19:57:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 1.300469483568075) internal successors, (3047), 2343 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3047 transitions. [2024-11-02 19:57:32,413 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3047 transitions. Word has length 307 [2024-11-02 19:57:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:32,414 INFO L471 AbstractCegarLoop]: Abstraction has 2344 states and 3047 transitions. [2024-11-02 19:57:32,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3047 transitions. [2024-11-02 19:57:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-02 19:57:32,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:32,420 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:32,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 19:57:32,420 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:32,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1338393859, now seen corresponding path program 1 times [2024-11-02 19:57:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969966605] [2024-11-02 19:57:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:32,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:32,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-11-02 19:57:32,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-11-02 19:57:32,555 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969966605] [2024-11-02 19:57:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1969966605] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:32,555 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:32,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867493775] [2024-11-02 19:57:32,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:32,557 INFO L87 Difference]: Start difference. First operand 2344 states and 3047 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:32,694 INFO L93 Difference]: Finished difference Result 4765 states and 6194 transitions. [2024-11-02 19:57:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 323 [2024-11-02 19:57:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:32,703 INFO L225 Difference]: With dead ends: 4765 [2024-11-02 19:57:32,703 INFO L226 Difference]: Without dead ends: 2442 [2024-11-02 19:57:32,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:32,707 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:32,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-02 19:57:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2212. [2024-11-02 19:57:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2211 states have (on average 1.2831298055178653) internal successors, (2837), 2211 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2837 transitions. [2024-11-02 19:57:32,748 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2837 transitions. Word has length 323 [2024-11-02 19:57:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:32,749 INFO L471 AbstractCegarLoop]: Abstraction has 2212 states and 2837 transitions. [2024-11-02 19:57:32,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2837 transitions. [2024-11-02 19:57:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-02 19:57:32,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:32,752 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:32,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 19:57:32,753 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:32,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1263289202, now seen corresponding path program 1 times [2024-11-02 19:57:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185569721] [2024-11-02 19:57:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:32,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:32,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-02 19:57:32,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-02 19:57:32,974 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:32,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185569721] [2024-11-02 19:57:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1185569721] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:32,975 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757883574] [2024-11-02 19:57:32,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:32,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:32,977 INFO L87 Difference]: Start difference. First operand 2212 states and 2837 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:33,049 INFO L93 Difference]: Finished difference Result 6380 states and 8142 transitions. [2024-11-02 19:57:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 355 [2024-11-02 19:57:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:33,055 INFO L225 Difference]: With dead ends: 6380 [2024-11-02 19:57:33,055 INFO L226 Difference]: Without dead ends: 4291 [2024-11-02 19:57:33,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:33,057 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 121 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:33,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 474 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:57:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2024-11-02 19:57:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4199. [2024-11-02 19:57:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 4198 states have (on average 1.2794187708432587) internal successors, (5371), 4198 states have internal predecessors, (5371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5371 transitions. [2024-11-02 19:57:33,132 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5371 transitions. Word has length 355 [2024-11-02 19:57:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:33,132 INFO L471 AbstractCegarLoop]: Abstraction has 4199 states and 5371 transitions. [2024-11-02 19:57:33,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5371 transitions. [2024-11-02 19:57:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-02 19:57:33,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:33,138 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:33,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 19:57:33,139 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:33,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1411878677, now seen corresponding path program 1 times [2024-11-02 19:57:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756933466] [2024-11-02 19:57:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:33,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 19:57:33,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 852 proven. 26 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-02 19:57:33,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 852 proven. 26 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-02 19:57:33,363 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756933466] [2024-11-02 19:57:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [756933466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:57:33,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:57:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-11-02 19:57:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418494971] [2024-11-02 19:57:33,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:57:33,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:57:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:57:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 19:57:33,367 INFO L87 Difference]: Start difference. First operand 4199 states and 5371 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:33,645 INFO L93 Difference]: Finished difference Result 12233 states and 15541 transitions. [2024-11-02 19:57:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:57:33,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 356 [2024-11-02 19:57:33,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:33,659 INFO L225 Difference]: With dead ends: 12233 [2024-11-02 19:57:33,660 INFO L226 Difference]: Without dead ends: 8157 [2024-11-02 19:57:33,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 19:57:33,664 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 123 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:33,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 639 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 19:57:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8157 states. [2024-11-02 19:57:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8157 to 5499. [2024-11-02 19:57:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 1.2781011276827938) internal successors, (7027), 5498 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 7027 transitions. [2024-11-02 19:57:33,778 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 7027 transitions. Word has length 356 [2024-11-02 19:57:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:33,778 INFO L471 AbstractCegarLoop]: Abstraction has 5499 states and 7027 transitions. [2024-11-02 19:57:33,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 7027 transitions. [2024-11-02 19:57:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-02 19:57:33,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:33,786 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:33,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 19:57:33,786 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:33,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash 258910961, now seen corresponding path program 1 times [2024-11-02 19:57:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:33,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010697548] [2024-11-02 19:57:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:33,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:33,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-11-02 19:57:33,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-11-02 19:57:33,891 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010697548] [2024-11-02 19:57:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1010697548] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:33,892 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576833622] [2024-11-02 19:57:33,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:33,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:33,894 INFO L87 Difference]: Start difference. First operand 5499 states and 7027 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:34,091 INFO L93 Difference]: Finished difference Result 11397 states and 14596 transitions. [2024-11-02 19:57:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:34,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 386 [2024-11-02 19:57:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:34,101 INFO L225 Difference]: With dead ends: 11397 [2024-11-02 19:57:34,101 INFO L226 Difference]: Without dead ends: 5919 [2024-11-02 19:57:34,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:34,106 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:34,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2024-11-02 19:57:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5919. [2024-11-02 19:57:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5919 states, 5918 states have (on average 1.2761067928354173) internal successors, (7552), 5918 states have internal predecessors, (7552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 7552 transitions. [2024-11-02 19:57:34,215 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 7552 transitions. Word has length 386 [2024-11-02 19:57:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:34,215 INFO L471 AbstractCegarLoop]: Abstraction has 5919 states and 7552 transitions. [2024-11-02 19:57:34,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 7552 transitions. [2024-11-02 19:57:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-02 19:57:34,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:34,222 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:34,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 19:57:34,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:34,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash -284409887, now seen corresponding path program 1 times [2024-11-02 19:57:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139224928] [2024-11-02 19:57:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:34,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:34,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-02 19:57:34,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-02 19:57:34,356 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139224928] [2024-11-02 19:57:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2139224928] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:34,356 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566983948] [2024-11-02 19:57:34,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:34,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:34,358 INFO L87 Difference]: Start difference. First operand 5919 states and 7552 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:34,547 INFO L93 Difference]: Finished difference Result 12531 states and 16087 transitions. [2024-11-02 19:57:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 387 [2024-11-02 19:57:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:34,557 INFO L225 Difference]: With dead ends: 12531 [2024-11-02 19:57:34,557 INFO L226 Difference]: Without dead ends: 6633 [2024-11-02 19:57:34,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:34,564 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:34,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2024-11-02 19:57:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 6633. [2024-11-02 19:57:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 6632 states have (on average 1.2622135102533172) internal successors, (8371), 6632 states have internal predecessors, (8371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 8371 transitions. [2024-11-02 19:57:34,694 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 8371 transitions. Word has length 387 [2024-11-02 19:57:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:34,694 INFO L471 AbstractCegarLoop]: Abstraction has 6633 states and 8371 transitions. [2024-11-02 19:57:34,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 8371 transitions. [2024-11-02 19:57:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-02 19:57:34,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:34,702 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:34,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 19:57:34,702 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:34,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1793972455, now seen corresponding path program 1 times [2024-11-02 19:57:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645034995] [2024-11-02 19:57:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:34,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 19:57:34,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 957 proven. 206 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-02 19:57:35,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 1052 proven. 111 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-02 19:57:36,448 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645034995] [2024-11-02 19:57:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645034995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:57:36,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:57:36,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-02 19:57:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688261269] [2024-11-02 19:57:36,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:57:36,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 19:57:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 19:57:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 19:57:36,450 INFO L87 Difference]: Start difference. First operand 6633 states and 8371 transitions. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:37,530 INFO L93 Difference]: Finished difference Result 18732 states and 23708 transitions. [2024-11-02 19:57:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 19:57:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 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 404 [2024-11-02 19:57:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:37,543 INFO L225 Difference]: With dead ends: 18732 [2024-11-02 19:57:37,543 INFO L226 Difference]: Without dead ends: 12276 [2024-11-02 19:57:37,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:57:37,550 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 276 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:37,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 631 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 19:57:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2024-11-02 19:57:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 11435. [2024-11-02 19:57:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11435 states, 11434 states have (on average 1.257215322721707) internal successors, (14375), 11434 states have internal predecessors, (14375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11435 states to 11435 states and 14375 transitions. [2024-11-02 19:57:37,870 INFO L78 Accepts]: Start accepts. Automaton has 11435 states and 14375 transitions. Word has length 404 [2024-11-02 19:57:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:57:37,871 INFO L471 AbstractCegarLoop]: Abstraction has 11435 states and 14375 transitions. [2024-11-02 19:57:37,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11435 states and 14375 transitions. [2024-11-02 19:57:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-02 19:57:37,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:57:37,885 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2024-11-02 19:57:37,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-02 19:57:37,885 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:57:37,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:57:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash -944746421, now seen corresponding path program 1 times [2024-11-02 19:57:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:57:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108061610] [2024-11-02 19:57:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:57:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:57:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:57:37,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 19:57:37,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:57:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1873 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 19:57:37,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:57:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1873 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-02 19:57:38,039 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:57:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108061610] [2024-11-02 19:57:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [108061610] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:57:38,040 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:57:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 19:57:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156726267] [2024-11-02 19:57:38,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:57:38,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 19:57:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:57:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 19:57:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:38,041 INFO L87 Difference]: Start difference. First operand 11435 states and 14375 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:57:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:57:38,327 INFO L93 Difference]: Finished difference Result 22484 states and 28273 transitions. [2024-11-02 19:57:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 19:57:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 418 [2024-11-02 19:57:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:57:38,343 INFO L225 Difference]: With dead ends: 22484 [2024-11-02 19:57:38,343 INFO L226 Difference]: Without dead ends: 11070 [2024-11-02 19:57:38,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 19:57:38,355 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:57:38,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:57:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11070 states. [2024-11-02 19:57:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11070 to 9969. [2024-11-02 19:57:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.2379614767255216) internal successors, (12340), 9968 states have internal predecessors, (12340), 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)